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航空略缩语 Aviation Glossary

时间:2011-09-15 17:20来源:蓝天飞行翻译 作者:航空 点击:


NOE nap of earth. Low flying, usually by the military, using contour-flying techniques and terrain-masking to avoid being seen.
NORDO no radio (used on flight plan form).
NOSIG no significant change, term used on Met reports.
NOTAM Notices to Airmen, issued by the CAA (and equivalent authorities elsewhere) to inform pilots of new or changed aeronautical facilities, services, procedures or hazards, temporary or permanent. Also SNOWTAM
NOTAR no tail rotor. A system patented by McDonnell Douglas for maintaining directional control of helicopters without use of an anti-torque tail rotor.
NPRM Notice of Proposed Rule-Making (USA). Advance publication by the FAA of proposed changes or additions to Federal Air Regulations.
NTSB National Transportation Safety Board. U.S. equivalent of UK's AAIB.
nvg night vision goggles
NVQ National Vocational Qualification. A Government-recognised qualification, the cost of training for which can be set against tax.

 
 
 
OASC Officers and Aircrew Selection Centre at RAF Cranwell
OAT outside air temperature. The temperature of the air outside an aircraft measured by a probe with a cockpit gauge readout. OAT affects the measurement of indicated airspeed and its value is needed to calculate true airspeed. At high speeds kinetic heating demands correction to the indicated OAT for true outside air temperature.
OATS Oxford Air Training School, a large commercial pilot training school at Oxford Airport, UK.
obst obstruction
OBS omni-bearing selector, part of a VOR used to select the radial from a VOR.
OCH obstacle clearance height. The lowest height above the elevation of the runway threshold or above aerodrome elevation used to establish compliance with obstacle clearance criteria in an instrument approach. Also OCA, obstacle clearance altitude, and OCL, obstacle clearance limit.
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