in the event of rain

1. I 2. II 3. III 4. IV 5. V 6. VI 7. XI 8. XIII 9. XV 10. XVI 11. XIX1 12. XX3 13. XXI1 14. XXV

1. I 2. II 3. III 4. IV 5. XI 6. XVI 7. XXI1 8. XXV 9. XXVII1

1. III 2. IV 3. V 4. VII 5. VIII 6. XI 7. XVIII 8. XXI1 9. XXVI

acknowledgement of receipt actual time of arrival aerodrome of call aerodrome of departure aerodrome of intended landing aerodrome of origin aircraft center - of - gravity airport of departure airport of destination airport of entry allocation of duties allocation of frequencies allotment of frequencies alternative means of communication amount of controls amount of feedback amount of precipitation angle of allowance angle of approach angle of approach light angle of ascent angle of attack angle of climb angle of coverage angle of crab angle of descent angle of deviation angle of dip angle of dive angle of downwash angle of elevation angle of exit angle of glide angle of incidence angle of indraft angle of lag angle of landing angle of pitch angle of roll angle - of - sideslip transmitter angle of sight angle of slope angle of stall angle of turn angle of upwash angle of visibility angle of yaw antimeridian of Greenwich apparent drift of the gyro application of tariffs approach rate of descent arc of a path arc of equal bearings area of coverage area of coverage of the forecasts area of occurence area of responsibility arrest the development of the stall assessment of costs assignment of duties Association of European Airlines Association of South Pacific Airlines assumption of control message at a speed of at the end of at the end of segment (полета) at the end of stroke (поршня) at the start of cycle at the start of segment (полета) aviation-to-aviation type of interference avoidance of collisions avoidance of hazardous conditions axial of bank axis of precession axis of roll axis of rotation axis of yaw backward movement of the stick be out of trim best rate of climb bias out of view bill of entry bill of lading blanketing of controls body of compass card boundary of the area Bureau of Administration and Services camber of a profile care of passengers carriage of passengers carry out a circuit of the aerodrome cause of aircraft trouble center of air pressure center of depression center of force center of gravity center of mass center of pressure Central Agency of Air Service certificate of revaccination certificate of safety for flight certificate of vaccination choice of field class of lift clearance of goods clearance of obstacles clearance of the aircraft coefficient of heat transfer come clear of the ground complex type of aircraft composition of a crew concept of separation conditions of carriage cone of rays congestion of information continuity of guidance contour of perceived noise control of an investigation correlation of levels country of arrival country of origin course of training coverage of the chart curve of equal bearings danger of collisions degree of accuracy degree of freedom degree of skill degree of stability denial of carriage Department of Transportation derivation of operating data determination of cause determine amount of the error determine the extent of damage determine the sign of deviation development of the stall direction of approach direction of rotation direction of turn duration of noise effect elevation of the strip elevation setting of light units eliminate the cause of eliminate the source of danger (для воздушного движения) end of runway enforce rules of the air en-route change of level erection of the gyro estimated position of aircraft estimated time of arrival estimated time of departure estimated time of flight even use of fuel extension of ticket validity extent of damage facilitate rapid clearance of factor of safety filing of statistical data first freedom of the air first type of occurence flow of air traffic fly under the supervision of for reasons of safety freedom of action freedom of the air frequency of operations gathering of information general conditions of carriage General Conference of Weights and Measure General Department of International Air Services of Aeroflot get out of control given conditions of flight go out of control go out of the spin grade of service grade of the pilot licence grading of runway height at start of retraction hover at the height of identification of signals inconventional type of aircraft increase a camber of the profile indication of a request in interests of safety initial rate of climb initial stage of go-around inlet angle of attack intake angle of attack integrated system of airspace control interception of civil aircraft International Co-ordinating Council of Aerospace Industries Association International Council of Aircraft Owner and Pilot Associations International Federation of Air Line Pilots' Associations International Federation of Air Traffic Controllers' Associations International Relations Department of the Ministry of Civil Aviation interpretation of the signal interpretation of weather chart intersection of air routes in the case of delay in the event of a mishap in the event of malfunction introduction of the corrections keep clear of rotor blades keep clear of the aircraft keep out of the way layout of aerodrome markings layout of controls lessee of an aircraft level of airworthiness level of safety level of speech interference limiting range of mass line of flight line of position line of sight location of distress loss of control loss of pressurization loss of strength magnetic orientation of runway margin of error margin of lift margin of safety margin of stability marking of pavements mean scale of the chart means of communication means of identification meridian of Greenwich method of steepest descent mode of flight moment of inertia moment of momentum name-code of the route onset of wind operation of aircraft out of ground effect out of service overshoot capture of the glide slope period of rating currency personal property of passengers pilot's field of view plane of rotation plane of symmetry of the aeroplane point of arrival point of call point of departure point of destination point of discontinuity point of intersection point of loading point of no return point of origin point of turn-around point of unloading portion of a flight portion of a runway prevention of collisions primary element of structure prohibition of landing prolongation of the rating promotion of safety proof of compliance propagation of sound protection of evidence pull out of the spin pull the aircraft out of radar transfer of control radius of curvature range of coverage range of motion range of revolutions range of visibility range of vision rate of climb rate of closure rate of descent rate of disagreement rate of duty rate of exchange rate of flaps motion rate of growth rate of pitch rate of roll rate of sideslip rate of trim rate of turn rate of yaw reception of telephony record of amendments record of revisions regularity of operations relay of messages release of control removal of aircraft removal of limitations replacement of parts representative of a carrier reservation of a seat retirement of aircraft right - of - entry roll out of the turn rules of the air safe handling of an aircraft second freedom of the air second type of occurence selection of engine mode sequence of fuel usage (по группам баков) sequence of operation showers of rain and snow simultaneous use of runways site of occurrence slope of level (шумов) source of danger Standing Committee of Performance start of leveloff start of takeoff state of aircraft manufacture state of discharge (аккумулятора) state of emergency state of occurence state of transit steadiness of approach steady rate of climb structure of fronts submission of a flight plan system of monitoring visual aids (на аэродроме) system of units (измерения) table of cruising levels table of intensity settings table of limits table of tolerance take out of service target level of safety temporary loss of control termination of control theory of flight time of lag time of origin titl of the gyro top of climb transfer of control transmission of telephony transmit on frequency of triangle of velocities under any kind of engine failure uneven use of fuel unit of measurement velocity of sound wall of overpressure warn of danger within the frame of working language of ICAO zone of intersection zone of silence

1. III 2. IV 3. XI 4. XVIII 5. XXI1

1. I 2. II 3. III 4. IV 5. V 6. VII 7. XI 8. XVI 9. XVIII 10. XXI1 11. XXIV1

if
I ɪf
II
[ɪf] IF
Indicative/Subjunctive after "si"
Si can be followed by both the {indicative} and the {subjunctive}. The {indicative} describes facts and likely situations; the {subjunctive} describes remote or hypothetical situations.
Indicative ► Use si + ((present indicative)) to translate if + ((present)) in English:
If you go on overeating, you'll get fat Si sigues comiendo tanto, vas a engordar
Don't do it if you don't want to No lo hagas si no quieres NOTE: Don't use si with the ((present subjunctive)).
Subjunctive ► Use si + ((imperfect subjunctive)) to translate if + ((past)) for remote or uncertain possibilities and hypotheses:
If we won the lottery, we would never have to work again Si nos tocase or tocara la lotería, no tendríamos que trabajar nunca más
What would you do if I weren't here? ¿Qué harías si yo no estuviese or estuviera aquí? ► Use si + ((pluperfect subjunctive)) (= hubiera or hubiese + ((past participle))) to translate if + had + ((past participle)):
If Paula hadn't lost her ticket, she would have left today Si Paula no hubiera or hubiese perdido el billete, habría salido hoy Alternatively, instead of a clause with si, you can often use de ( no) haber + ((past participle)):
If Paula hadn't lost her ticket, she would have left today De no haber perdido Paula el billete, habría salido hoy For further uses and examples, see main entry
I [ɪf]
II

[si:m] - seemingly
- seemly [siːm]