MD-11 Flight Crew Operations Manual
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Instrumentation and Navigation -
Controls and Displays
Inst.30.26
ATC Transponder
1. TEST Button
Push - Activates system test.
2. XPNDR Selector
1/2 - Selects transponder 1 or 2.
3. Mode Selector
STBY - Applies power to the transponder but inhibits response to ground
interrogation.
XPNDR - Allows response to ground interrogation.
TA ONLY - Selects TCAS Traffic Advisory mode only.
TA/RA - Selects Traffic/Resolution Advisory mode.
ALT RPTG OFF - Turns altitude reporting off.
4. ABV/BLW Selector
ABV - Selects display of traffic that is above (up to 9,900 feet) and below
down to 2,700 feet.
N - Selects display of traffic within +/- 2,700 feet of own altitude.
DB1-2-1820
ABV
N
BLW
TA/RA
TA ONLY
STBY
ALT RPTG
OFF
1
2
3
4
5
6
7
CLR
1
2
TEST
T
C
A
S
A
T
C
0
1
AFT PEDESTAL, LEFT SIDE
XPNDR
IDENT
XPNDR
2
3
4
5
October 02, 2006
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