Extra 300L - Important Codes; Emergency Procedures; Mode a Operation; Limitations

Section 918
BECKER ATC 2000 Transponder
Page Date: 15. December 2005 918 - 5
Pilot´s Operating Handbook
EXTRA 300L
918.1.3 MODE A OPERATION
1 Activate the transponder on ATC request only. To enshure instant readiness, position
the mode switch to SBY (standby) during the flight.
2 Set the code requested by ATC using the four coding switches. Set two-digit code
numbers in the first two windows of the readout.
N O T E
Only operate the coding switches in the SBY (standby) mode.
3 Switch the mode switch ON on ATC request, the transponder then responding to mode
A interrogation with dialed code, as indicated by the REPLY lamp coming on.
4 Only press the IDENT button briefly when requested by ATC, causing a special
identification pulse (SPI pulse) being transmitted, permitting instant identification of the
aircraft on the ATC radar system.
918.1.4 MODE A AND C OPERATION
1 Postion mode switch to ALT on ATC request only. The transponder then responds with
dialed code, causing REPLY lamp to light up and additionally transmits the height of
the aircraft to ATC.
2 Press the IDENT button briefly when requested by ATC, causing a special identification
pulse (SPI pulse) being transmitted, permitting instant identification of the aircraft on
the ATC radar system.
918.2 LIMITATIONS
Not applicable.
918.3 EMERGENCY PROCEDURES
918.3.1 IMPORTANT CODES
7600 Loss of communications.
7500 Hijacking.
7700 Emergency (All secondary surveillance radar sites are ready to receive this code at all
times).
See the Airman’s Information Manual (AIM) for a detailed explanation of identification codes.
Page Date: 20. January 2016