PEC航空英语证书考试-航空词汇解释.docVIP

PEC航空英语证书考试-航空词汇解释 A.C. a/c an adjective referring to the back part of a plane. Rear is also used with the same meaning. It contrasts with forward. The words before and after are only used to talk about time relationships Alternating Current: the type of electrical power generated by the engine generators and characterised by frequency oscillation as opposed to D.C. (Direct Current). abbreviation for aircraft abeam the runway indicating that the runway is to the side of the aircraft, at a bearing of approximately 90° or 270° relative to the aircraft, i.e. to the right or the left abort (v) to stop doing something or stop a process that you had intended to do or had already started to do, especially a take-off or landing: take-off must be aborted before V1. ACAS A.C. bus AC Essentialaccess platform Airborne Collision Avoidance System: an aircraft system using Secondary Surveillance Radar (SSR) transponder signals, which operates independently of ground equipment to alert the flight crew about conflicting aircraft an aircraft electrical power distribution point for alternating current to which several power circuits are connected feed the main alternating current power supply a platform mounted on wheels with steps which allows technicians to gain access to the higher parts of the aircraft accretion rate the speed at which ice is accumulating; it is also referred to as the accumulation rate or build-up rate acknowledge (v) to say that you have heard and understood. It is important that the controller listens carefully to pilot input on the nature of the emergency, requests clarification if in doubt, and gives the crew reassurance that their problem is understood. Requesting and providing clarification, paraphrasing, confirming and acknowledging all play a key role in such exchanges: In case of radio failure, acknowledge by flashing headlights. acrid used to describe a sharp, bitter (smell), especially of smoke or fumes acute 1) at a sharp