level hole

hole n access hole air bleed hole check hole drain hole flame tube air hole inspection hole lightening hole oil level hole puncture hole spark plug hole threaded hole through hole unused hole ventilation hole

level n above ground level above mean sea level acoustic reference level actual noise level measurement actual sideline noise level aerodrome level aircraft cost level altitude above sea level ambient noise level approach noise level arrival flight level at the ground level automatic level control background level battery electrolyte level be on the level on the hour certificated noise level cloud level community noise level continuous perceived noise level correlation of levels cruising level day-night sound level departure flight level design noise level deviation from the level flight en-route change of level eye level path fare level flight level flight level table fly at a low level fly level flyover noise level freezing level fuel level gage fuel low level switch (в баке) ground level high level network high level significant weather chart holding flight level illumination level international standard atmosphere level keep level layer between levels level attitude level control level cruise level down level flight level flight noise requirements level flight path level flight time level flying level gage level graticule level information level landing level of airworthiness level off level of safety level of speech interference level slope direction level switch (напр. топлива) level the aircraft out level turn level up liquid level switch (гироскопического прибора) lower flight level low level wind-shear alert system maintain the flight level maximum permissible noise level mean sea level mean sea level pressure minimum cruising level minimum level noise level noise level attenuation curve noise level radiation noise level value noise pressure level odd flight level oil level hole oil level tube output level overall sound pressure level peak perceived noise level permissible noise level pilot ability level pilot experience level precision sound level meter preset flight level reach the flight level recording level reduce noise level reference fare level remain level report reaching the flight level runway level safe level safety level sea level sea level atmospheric density single level overflight measurement skill level slope of level (шумов) sound exposure level sound level history sound level meter sound pressure level staggered flight level standard foreign fare level standard industry fare level standard noise level table of cruising levels takeoff surface level tank level indicator target level of safety tariff level factor threshold level transition level upper flight level upper level control area usable flight level