Encoder

ENCODER
Displays aircraft`s altitude on ground-based radar screens.
ENGINE
The methanol or gasoline fueled power plant used in a aircraft. Two or four-stroke gasoline and glow engines are very popular in aircraft. Four-stroke...

Encoder - Displays aircraft's altitiude on ground-based radar screens.
Engine cowl - A removable metal covering placed over and around an airplane's engine.
EROS - Brand Name for Oxygen Mask
ETOPS - Extended Twin-engine operations.

A standard atmosphere has been established to enable comparison of aircraft performance, calibration of instruments (altimeters, transponders encoders, etc) and meteorological purposes.

An encoder off by 300' could set off the alarm. If you should wander more than 300' off IFR assigned altitude and ATC questions, delay your response until altitude is within 300'. Better yet, advise "unreadable" while making the correction.

A ground-based service providing information to the flight deck via data link using the S-mode transponder and altitude encoder to improve the safety and efficiency of 'see and avoid' flight through an automatic display that informs the pilot of ...

When interrogated by ground radar, it transmits a return signal which controllers can use to identify and tag the flight on their computerized video display radar screen. Paired with an altitude encoder, ...

Paired with an altitude encoder, "Mode C" transponders also transmit the aircraft's altitude. All aircraft flying in Class B airspace or higher than 10,000 feet are required to have Mode C transponders.

See also: Flight, Aircraft, Altitude, Altimeter, Air traffic