endurance-test aircraft

test n aerodynamic test vehicle aircraft acceleration tests aircraft alternate-stress tests aircraft commissioning tests aircraft endurance tests aircraft environmental test aircraft test data aircraft test station altitude-chamber test altitude test facilities altitude tests anechoic test facilities approach test procedure aural reception test automatic test system bench-run tests braking action test braking test device build-in test system built-in test circuit built-in test equipment cabin leak test set calibration test calibration test rig certification test flight certification test operational procedure certification tests check tests climatic test bench climbing test compliance test conduct tests containment test controlled-crash test dial test indicator direct test ditching test endurance block tests endurance tests engine ground test time engine test base engine test bench factory test flight factory tests fatigue tests field tests flatter tests flight acceptance test flight stress measurement tests flight test flight test noise measurement flight test procedure flight test recorder flight test technique flyover noise test free drop test free-flight test friction test device full-distance test full-scale tests functional tests go-around test ground tests hovering test hydraulic test rig ignition test impact test inflight engine test integral test landing gear drop tests leak test license tests long-run test manufacturer's test pilot noise certification test conditions noise sertification test noise test official test operation tests penalty tests percent test pneumatic test rig preliminary test pressurized leakage test production test flight production tests proof-of-compliance tests rating test rotocraft snow and dust test run-in test service life test shock test simulated flight test static tests store test structural test substantiating test tachometer test set takeoff noise test taxi tests test aerodrome test a fuel nozzle test aircraft test box test certificate test cycle test data test environment test equipment test facilities test flight test flow restrictor test fly test gears for smooth test in flight test instrument test in the wind tunnel test laboratory test landing test margin test model test noise test operation test pilot test pressure test procedure test report test stand test the system test ticket towing basing test transmission test indicator two-dimensional flow test under flight test undergo flight tests vibration test wind-tunnel test

aircraft n abandon an aircraft abandoned aircraft accident to an aircraft accommodate an aircraft active aircraft after an aircraft ageing aircraft airborne aircraft aircraft acceleration factor aircraft acceleration tests aircraft accessory gear box aircraft age aircraft alert position aircraft alternate-stress tests aircraft anticollision device aircraft assembly jig aircraft axis aircraft balance diagram aircraft basic specifications aircraft bearing aircraft behavior aircraft blind transmission aircraft braking performance aircraft breakaway aircraft breakdown aircraft call sign aircraft capacity aircraft capacity range aircraft cargo lashing aircraft category aircraft category rating aircraft center line aircraft center - of - gravity aircraft certificate aircraft certificate holder aircraft classification aircraft clock aircraft commander aircraft commissioning tests aircraft communication equipment aircraft company aircraft component aircraft container aircraft control loss aircraft control margin aircraft control system aircraft control transfer aircraft cost level aircraft course aircraft customer aircraft deck aircraft decompression aircraft defects list aircraft delivery aircraft depot aircraft design aircraft designer aircraft design load aircraft development plant aircraft dimension tolerance aircraft ditching aircraft documents aircraft dry lease aircraft drylease aircraft earthing aircraft electrical failure aircraft electric system aircraft electrification aircraft embody aircraft emergency aircraft emergency locator beacon aircraft employment aircraft empty weight aircraft endurance tests aircraft environmental test aircraft equipment aircraft equipment overhaul aircraft escape chute aircraft evacuation means aircraft evolution aircraft factory aircraft fatigue life aircraft fire point aircraft first cost aircraft fix aircraft fixed equipment aircraft fix latitude aircraft fixture aircraft flash aircraft fleet aircraft fleet turnover aircraft flight report aircraft flying aircraft freight aircraft fuel consumption aircraft fuel quantity aircraft fuel supply aircraft galley aircraft generation aircraft geometry aircraft handling aircraft hardware aircraft heading aircraft heater aircraft heating system aircraft heel aircraft high tension wiring aircraft hijack protection aircraft hoist aircraft hour aircraft hydraulic jack aircraft icing aircraft identification aircraft identification system aircraft impact aircraft impact angle aircraft in distress aircraft in missing aircraft in service aircraft insurance aircraft integrated data system aircraft intentional swerve aircraft interchange aircraft is considered to be missing aircraft jacking point aircraft ladder aircraft lading aircraft landing aircraft landing measurement system aircraft lateral inbalance aircraft layout aircraft lead aircraft leaflet aircraft lease aircraft leveling point aircraft lights aircraft limit switch aircraft list aircraft load distribution aircraft load factor aircraft loading chart aircraft loading diagram aircraft loading instruction aircraft low tension wiring aircraft maintenance base aircraft maintenance depot aircraft maintenance division aircraft maintenance engineer aircraft maintenance engineering exhibition aircraft maintenance guide aircraft maintenance performance aircraft maintenance practice aircraft maintenance team aircraft main view aircraft manoeuvrability aircraft manufacturing facilities aircraft manufacturing plant aircraft minima aircraft mockup aircraft model aircraft movement aircraft mush aircraft nationality mark aircraft navigation equipment aircraft noise abatement operating procedures aircraft noise annoyance aircraft noise certificate aircraft noise pollution aircraft noise prediction program aircraft nose section aircraft observation aircraft on flight aircraft on register aircraft operating agency aircraft operating expenses aircraft operating instruction aircraft operation aircraft operational empty weight aircraft operational range aircraft operational weight aircraft overhaul aircraft overhaul plant aircraft overhaul shop aircraft overswinging aircraft parking aircraft parking equipment aircraft parking place aircraft passenger insurance aircraft perfomance limitations aircraft performance characteristics aircraft performances aircraft phantom view aircraft pivoting aircraft pneumatic system aircraft portable equipment aircraft position aircraft position indicator aircraft position line aircraft position report aircraft power reduction aircraft power supply aircraft production aircraft production break line aircraft production inspection aircraft prototype aircraft provider state aircraft range aircraft rating aircraft readiness aircraft recorder aircraft recorder equipment aircraft recovery aircraft recovery date aircraft recovery kit aircraft recovery plan aircraft reference symbol (на шкале навигационного прибора) aircraft registration aircraft registration mark aircraft registry state aircraft reliability aircraft removal from service aircraft rental costs aircraft repair depot aircraft repair kit aircraft repairman aircraft repair shop aircraft requiring assistance aircraft reserve factor aircraft responder aircraft retrofit aircraft roll aircraft safe life aircraft safety beacon aircraft safety factor aircraft salvage aircraft sanitary control aircrafts batch aircraft seating density aircraft self routing aircraft sensitivity aircraft separation assurance aircraft service period aircraft service truck's aircraft servicing aircraft servicing equipment aircraft servicing installation aircraft setting aircraft's file aircraft shed aircraft side aircrafts impingement aircraft simulator aircraft skidding drag aircraft's loading position aircraft sound proofing aircraft spacing aircraft spare part aircraft's parking position aircraft speed aircraft spiral glide aircraft's present position aircraft stand aircraft standby facilities aircraft stand identification aircraft stand identification sign aircraft stand lead-in line aircraft stand marking aircraft stand taxilane aircraft status report aircraft step unit aircraft stop aircraft stopping performance aircraft storage battery aircraft storage instruction aircraft structural deformation aircraft structure aircraft substantial damage aircraft sudden swerve aircraft supersedeas aircraft supplier aircraft surface movement indicator aircraft system aircraft technician aircraft test data aircraft test station aircraft tie-down point aircraft tightness aircraft tool coding aircraft towing point aircraft trail aircraft trim aircraft type aircraft uncontrollability aircraft underloading aircraft unlawful seizure aircraft usability factor aircraft useful load aircraft user state aircraft ventilation rate aircraft wake aircraft warning system aircraft warranty aircraft washing plant aircraft wearout rate aircraft weight category aircraft weight tolerance aircraft wet lease aircraft wreck airodynamically balanced aircraft align the aircraft align the aircraft with the center line align the aircraft with the runway all-cargo aircraft all-metal aircraft all-purpose aircraft all-weather aircraft all-wing aircraft ambulance aircraft amphibian aircraft approaching aircraft arriving aircraft associated aircraft system authorized aircraft balanced aircraft balance the aircraft baseline aircraft baseline aircraft configuration basic aircraft board an aircraft bring the aircraft back bring the aircraft out business aircraft canard aircraft cargo aircraft cause of aircraft trouble charter an aircraft chartered aircraft civil aircraft clean aircraft clean the aircraft clearance of the aircraft cleared aircraft clear the aircraft combination aircraft Committee on Aircraft Noise commuter-size aircraft complex type of aircraft consider an aircraft serviceable control the aircraft conventional takeoff and landing aircraft convert an aircraft convertible aircraft cover an aircraft with damage aircraft structure damaged aircraft decelerate the aircraft to delta-wing aircraft departing aircraft derived aircraft disabled aircraft double-decker aircraft ease the aircraft on eastbound aircraft effect on an aircraft enable the aircraft to endanger the aircraft engage in aircraft operation enter the aircraft enter the aircraft stand entire aircraft environmentally attuned aircraft equip an aircraft with estimated position of aircraft executive aircraft experimental aircraft feeder aircraft fill an aircraft with first-generation aircraft fit an aircraft with fixed-wing aircraft fly by an aircraft fly the aircraft 2. управлять самолетом folding wing aircraft following aircraft follow up the aircraft forest patrol aircraft freight aircraft full-scalle aircraft general-purpose aircraft handy aircraft head the aircraft into wind heavier-than-air aircraft heavy aircraft high-altitude aircraft high-capacity aircraft high-speed aircraft high-wing aircraft holding aircraft hold the aircraft on the heading hospital aircraft house an aircraft hypersonic aircraft identify the aircraft improperly loaded aircraft inbound aircraft in-coming aircraft inconventional type of aircraft in-flight aircraft inherent in the aircraft in-service aircraft install in the aircraft install on the aircraft interception of civil aircraft interchanged aircraft intercharged aircraft agreement international aircraft standard International Council of Aircraft Owner and Pilot Associations intruding aircraft inward aircraft irrepairable aircraft jack an aircraft jet aircraft join an aircraft keep clear of the aircraft keep the aircraft on known aircraft damage laden aircraft land aircraft land the aircraft lead in the aircraft lead out the aircraft lease an aircraft leased aircraft lessee of an aircraft level the aircraft out licensed aircraft lift an aircraft on lift-fuselage aircraft light aircraft lighter-than-air aircraft line up the aircraft long-bodied aircraft long-distance aircraft low annoyance aircraft low-wing aircraft mail-carrying aircraft maintain the aircraft at readiness to make the aircraft airborne making way aircraft manned aircraft mid-wing aircraft missing aircraft modified aircraft moor the aircraft multicrew aircraft multiengined aircraft multipurpose aircraft narrow-body aircraft nonnoise certificate aircraft nose-in aircraft stand nose-out aircraft stand on aircraft center line oncoming aircraft one-engined aircraft operate an aircraft operation of aircraft originating aircraft outbound aircraft outdated aircraft out-of-balance aircraft outward aircraft overweight aircraft owner-operated aircraft park an aircraft passenger aircraft patrol aircraft piston-engined aircraft place the aircraft plot the aircraft practice aircraft preceeding aircraft preproduction aircraft pressurized aircraft production aircraft profitable aircraft prop-driven aircraft properly identify the aircraft prototype aircraft pull the aircraft out of push the aircraft back push the aircraft down put the aircraft into production put the aircraft on the course put the aircraft over quiet aircraft receiver aircraft reduced takeoff and landing aircraft reequip an aircraft register the aircraft regular-body aircraft release the aircraft removal of aircraft remove the aircraft rescue aircraft research aircraft restore an aircraft retirement of aircraft return an aircraft to flyable status return the aircraft to service roll in the aircraft roll on the aircraft roll out the aircraft rotary-wing aircraft rotate the aircraft safe handling of an aircraft school aircraft sea aircraft search and rescue aircraft separate the aircraft short-range aircraft short takeoff and landing aircraft single-engined aircraft single-pilot aircraft single-seater aircraft space the aircraft sports aircraft standby aircraft state aircraft state of aircraft manufacture stayed afloat aircraft steer the aircraft stretched aircraft subsonic aircraft substantially dameged aircraft substitute the aircraft supersonic aircraft suspected aircraft damage tailless aircraft taxiing aircraft terminating aircraft test aircraft the aircraft under command today's aircraft topped-up aircraft training aircraft transonic aircraft transport aircraft trim the aircraft turbine-engined aircraft turbojet aircraft turboprop aircraft twin-engined aircraft twin-fuselage aircraft under command aircraft under way aircraft unladen aircraft unlawfully seized aircraft unpressurized aircraft unstall the aircraft unstick the aircraft vend an aircraft vertical takeoff and landing aircraft warn the aircraft wide-body aircraft work on the aircraft

flight n abort the flight accelerated flight acceptance flight accident-free flight acrobatic flight actual flight conditions actual flight path adhere to the flight plan advance flight plan advertizing flight aerial survey flight aerial work flight aerobatic flight aerodrome flight information service aerotow flight affect flight operation aircraft flight report aircraft on flight air-filed flight plan all-freight flight all-weather flight alternate flight plan altitude flight approach flight reference point approach flight track distance approved flight plan approved flight procedure arbitrary flight course area flight control around-the-world flight arrival flight level arrow flight stability assigned flight path asymmetric flight attitude flight control autocontrolled flight automatic flight automatic flight control automatic flight control equipment automatic flight control system autorotational flight back-to-back flight bad-weather flight banked flight basic flight reference be experienced in flight beyond flight experience blind flight blind flight equipment blocked-off flight border-crossing flight border flight clearance box-pattern flight bumpy-air flight business flight calibration flight cancelled flight cancel the flight cargo flight carry out the flight certificate of safety for flight certification test flight change to a flight plan charter flight chased flight checkout flight civil flight climbing flight closed-circuit flight close the flight closing a flight plan coasting flight coast-to-coast flight commence the flight commercial flight complete the flight complete the flight plan compulsory IFR flight computer-directed flight computer flight planning conflicting flight path connecting flight contact flight contact flight rules continue the flight continuous flight continuous flight record contour flight controlled flight conventional flight crabbing flight credit flight time crop control flight cross-country flight cross-wind flight cruising flight current flight plan day flight decelerate in the flight decelerating flight delayed flight delivery flight demonstration flight departure flight level descending flight design flight weight desired flight path desired path flight desired track flight deviate from the flight plan deviation from the level flight digital flight guidance system digital flight recorder directed reference flight direct flight distance flight diverted flight domestic flight domestic flight stage downward flight drift flight dual flight eastbound flight effect on flight characteristics emergency flight emergency flight procedures empty flight endurance flight engine-off flight engine-on flight en-route flight en-route flight path en-route flight phase en-route flight planning entire flight establish the flight conditions estimated time of flight exercise flight supervision experimental flight extra flight extra section flight factory test flight familiarization flight fatal flight accident ferry flight filed flight plan file the flight plan first-class flight flapless flight flight acceptance test flight accident flight altitude flight announcement flight assurance flight baby cot flight book flight briefing flight calibration flight certificate flight characteristics flight chart flight check flight checked flight clearance flight compartment flight compartment controls flight compartment view flight computer flight conditions flight control flight control boost system flight control fundamentals flight control gust-lock system (при стоянке воздушного судна) flight control load flight control system flight coordination flight corrective turn flight coupon flight coupon stage flight course flight crew flight crew duty flight crew equipment flight crew member flight crew oxygen system flight crews provision flight crew supervision flight data flight data averaging flight data input flight data link flight data recorder flight data storage unit flight dead reckoning flight deck flight deck aural environment flight deck environment flight departure flight deterioration flight direction flight director flight director computer flight director course indicator flight director indicator flight director system flight director system control panel flight discrepancy flight dispatcher flight distance flight distance-to-go flight diversion flight documentation flight documenting flight duration flight duty period 2. полетное рабочее время flight emergency circumstance flight endurance flight engineer flight engineer's seat flight engineer station flight envelope flight environment data flight environment data system (условий полета) flight evaluation flight evasive aquisition flight examination flight experience flight fitness flight following flight forecast flight gyroscope flight history flight hour flight idle flight idle power flight idle speed flight idle stop (для предупреждения перевода на отрицательную тягу винта) flight inbound the station flight indicator flight information 2. стирать запись полетной информации flight information board flight information center flight information display flight information region flight information service flight information service unit flight inspection personnel flight inspection system flight inspector flight instruction flight instructor flight instrument reading flight lane flight level flight level table flight load flight load feel mechanism flight loading conditions flight logbook flight longitude flight management flight management computer system flight management system flight map flight mode flight monitoring 2. контроль за полетом flight navigation flight navigator flight occurrence identification flight on heading flight operating safety flight operation flight operations expert flight operations instructor flight operations personnel flight operations system flight operator flight outbound the station flight over the high seas flight path flight path angle flight path curvature flight path envelope flight path segment flight path tracking flight performance flight personnel flight personnel information flight pick-up equipment flight plan flight plan clearance flight plan filing flight plan form flight planner flight planning flight plan submission deadline flight precise information flight preparation flight preparation form flight procedure flight procedures trainer flight progress board flight progress display flight progress information flight progress strip flight range flight range with no reserves flight reasonable precautions flight recorder flight recorder record flight recorder recording flight recorder system flight recording medium flight recovery flight regularity communication flight regulation flight replanning flight report flight report identification flight request flight restart flight restart button flight resumption flight review flight route flight routing flight rules flight safety flight safety hazard flight safety precautions flight schedule flight service flight service kit flight service range flight service station flight significant information flight simulation flight simulation system flight simulator flight speed flight spoiler flight stage flight standards flight status (определяет степень важности полета) flight stress measurement tests flight strip flight supervision flight technique flight test flight test noise measurement flight test procedure flight test recorder flight test technique flight thrust flight time flight time limitation flight timetable flight track flight training flight training deficiency flight training procedure flight type flight under the rules flight urgency signal flight visibility flight visual contact flight visual cue flight visual range flight watch flight weather briefing flight wind shear formation flight free flight full-scale flight full-throttle flight given conditions of flight gliding flight go-around flight manoeuvre govern the flight grid flight handle the flight controls hazardous flight conditions head-down flight head-up flight head-wind flight hidden flight hazard high-speed flight hing-altitude flight holding flight holding flight level horizontal flight horizontal flight path hover flight hypersonic flight idle flight inaugural flight inclusive flight incontrollable flight in flight in flight blunder in flight bump instructional check flight instructional dual flight instructional solo flight instrument flight instrument flight plan instrument flight procedure instrument flight rules instrument flight rules operation instrument flight trainer instrument flight training intended flight intended flight path intermediate flight stop international flight international flight stage introductory flight inward flight jeopardize flight safety jeopardize the flight jettisoned load in flight latch the propeller flight stop lateral flight path level flight level flight noise requirements level flight path level flight time limit flight time line of flight line oriental flight training local flight long-distance flight low altitude flight planning chart lower flight level low flight low-level flight low-speed flight low-visibility flight maiden flight maintain the flight level maintain the flight procedure maintain the flight watch man-directed flight manipulate the flight controls mechanical flight release latch meteorological reconnaissance flight mid-course flight minimum flight path misinterpreted flight instructions misjudged flight distance mode of flight modify the flight plan monitor the flight multistage flight night flight noise certification takeoff flight path noiseless flight nonrevenue flight nonscheduled flight nonstop flight nontraffic flight nonvisual flight odd flight level off-airway flight one-stop flight one-way flight on-type flight experience operational flight information service operational flight plan operational flight planning operational flight procedures orientation flight out-and-return flight out-of-trim flight outward flight overland flight oversold flight overwater flight overweather flight performance flight pleasure flight point-to-point flight portion of a flight positioning flight powered flight power-off flight power-on flight practice flight prearranged flight prescribed flight duty prescribed flight track preset flight level private flight production test flight profit-making flight provisional flight forecast radio navigation flight reach the flight level rearward flight receive flight instruction reference flight reference flight procedure reference flight speed refuel in flight refuelling flight regular flight relief flight repetitive flight plan replan the flight reportable flight coupon report reaching the flight level restart the engine in flight resume the flight return flight revenue earning flight rhumb-line flight rotorcraft flight structure round-trip flight routine flight sailing flight scheduled flight sector flight select the flight route shakedown flight short-haul flight shuttle flights sideward flight speed (вертолета) sight-seeing flight simulated flight simulated flight test simulated instrument flight single-engined flight single-heading flight soaring flight solo flight special event flight stabilized flight staggered flight level stall flight standoff flight stationary flight steady flight steady flight speed still-air flight still-air flight range stored flight plan straight flight submission of a flight plan submit the flight plan subsonic flight supernumerary flight crew supersonic flight supervised flight supplementary flight plan synthetic flight trainer tailwind flight takeoff flight path takeoff flight path area taxi-class flight terminate the flight test flight test in flight theory of flight through flight through on the same flight total flight experience traffic by flight stage training dual flight training flight training flight engineer training solo flight transfer flight transient flight transient flight path transit flight trial flight turbulent flight turnround flight unaccelerated flight uncontrolled flight under flight test undergo flight tests unofficial flight information unscheduled flight unsteady flight upper flight information region upper flight level upper flight region usable flight level vectored flight visual contact flight visual flight visual flight rules visual navigation flight VOR course flight while in flight wings-level flight with rated power flight

fuel n aft fuel pump aft fuel tank aircraft fuel consumption aircraft fuel quantity aircraft fuel supply airfield fuel valve alternate fuel tank atomize fuel aviation fuel aviation mixed fuel aviation turbine fuel bag fuel tank block fuel boost fuel bubble-free fuel bypass fuel back bypass fuel line climb fuel conserve fuel continue operating on the fuel reserve controlling fuel critical fuel reserve drainable fuel dump fuel emulsified fuel engine-driven fuel boost pump engine fuel system en-route fuel reserve even use of fuel external fuel tank feed fuel ferry fuel tank first fuel consumed tank flexible fuel tank float fuel gage float-type fueling valve fossil fuel fuel accumulator fuel accumulator pressurization fuel atomization fuel atomizer fuel availability fuel backup pump fuel booster pump fuel bypass back fuel bypass pipe fuel call fuel capacity fuel connection fuel consumed counter fuel consumed tank fuel consumption rate fuel control panel fuel control unit fuel crossfeed line fuel cross-feed system fuel depletion fuel depot fuel detonation fuel dip stick fuel dip system fuel discharge fuel dispenser fuel distribution fuel distributor fuel draining fuel dumping fuel dumping rate fuel dump system fuel efficiency fuel efficient altitude fuel endurance fuel enrichment system fuel farm fuel feed system fuel filling fuel filter fuel fire shutoff valve fuel flow 2. регулирование расхода топлива fuel flow indicator fuel flow meter fuel flowmeter system fuel flow transmitter fuel governor fuel grade fuel gravity system fuel gravity transfer tube fuel heater fuel indicating system fuel injection control fuel injection nozzle fuel injection system fuel jet fuel jettisoning system (fuel jettisonning system) fuel knock fuel level gage fuel line fuel load fuel low level switch (в баке) fuel management schedule fuel management system fuel manifold drain system fuel metering fuel metering unit fuel mixture indicator fuel nozzle fuel nozzle ferrule fuel nozzles group fuel off-load rate fuel outlet hose fuel outlet pipe fuel pipeline fuel preheat system (на входе в двигатель) fuel pressure gage fuel pressure indicator fuel pressure warning light fuel property fuel pump fuel quantity gage fuel quantity indicator fuel quantity indicator selector switch fuel quantity meter fuel quantity transmitter fuel quantity transmitter hatch fuel range fuel range estimating fuel remaining counter fuel remaining indicator fuel reservoir fuel runout fuel savings procedure fuel screen fuel selector fuel servicing truck fuel shutoff valve lever fuel spill fuel spray pattern fuel starvation fuel storage depot fuel storage system fuel supply pressure fuel supply system fuel system fuel tank 2. топливный бак fuel tankage fuel tank drainage fuel tanker fuel tank filling rate fuel tank support fuel tank trailer fuel tank water drainage fuel the tank fuel throughput charge fuel totalizer fuel trankage fuel transfer fuel transfer pump fuel trimming fuel up fuel uplift fuel usage system (из баков) high-energy fuel high-grade fuel high-octane fuel high-pressure fuel system high-speed fuel manifold ignite fuel igniter fuel nozzle improper fuel in computing the fuel intentionally damped fuel introduce fuel jet fuel jettison fuel low-speed fuel manifold main fuel main fuel manifold main fuel nozzle minimize fuel consumption on-board fuel one-hour fuel reserve operate on fuel pressure fuel system primary fuel nozzle primary fuel starting manifold run out fuel run-up fuel second fuel consumed tank self-sealing fuel tank sequence of fuel usage (по группам баков) service fuel tank shut off fuel slipper fuel tank specific fuel consumption started fuel valve starting fuel starting fuel control unit starting fuel nozzle takeoff fuel taxi fuel test a fuel nozzle thrust specific fuel consumption total fuel indicator transfer fuel trapped fuel two-jet fuel nozzle undrainable fuel reserve uneven use of fuel unusable fuel usable fuel use fuel ventral fuel tank wide-cut fuel wing fuel tank wing integral fuel tank wingtip fuel tank zero fuel mass zero fuel weight

operational adj aircraft operational empty weight aircraft operational range aircraft operational weight airline operational communication Basic Operational Requirements Group certification test operational procedure inflight operational instructions inflight operational planning operational accident operational aerodrome operational area operational availability operational check operational clearance operational control operational endurance operational expenses operational flight information service operational flight plan operational flight planning operational flight procedures operational hours operational item operational meteorological information operational parameter operational range operational reliability operational requirements operational runway operational standards operational status operational summary operational trim operational undertaking pilot operational decision preliminary operational planning