Honeywell International Inc. 9PGTPL-100A Manuale Utente

Page 1008

1 Mar 2006

TPL-100A Processor / Part No. 940-0530-001

Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.

XPNDR TOP ANT

XPNDR LOWER ANT

Check: 

Coaxial connectors 

Coax cable 

Coax switches 

Coax switch circuit defective 

Transponder antenna 

No. 1 XPNDR ALT DATA

No. 2 XPNDR ALT DATA

XPNDR ALT DATA No. 1 and No. 2

Check:

Altitude source 

Associated wiring 

SELECTED XPNDR 

XPNDR CONTROL DATA

Check Mode S transponder/control unit - Denotes 

loss/incorrect data not covered by other fault codes

XPNDR TCAS DATA  

No. 1 XPNDR DATA BUS

No. 2 XPNDR DATA BUS

Check: 

 

Max airspeed program pins 

Data bus wires (4) 

Mode S address wires 

Suppression coax cable 

Power wires/circuit breaker 

NOTE:  If a fault is indicated, perform a front-panel test of the Mode S transponder unit for further clarification of these 

problems.

MILACAS-FR

 PROCESSOR

UPPER ANTENNA
LOWER ANTENNA
ATTITUDE 
HEADING 

Perform 

MILACAS-FR

 Processor self test

Refer to 

paragraph 1.F.

TCAS FAIL/NO TCAS
TRAFFIC DISPLAY  

PPI or dedicated display failure.  

RA DISPLAY No. 1  

A single RA DISPLAY or RADIO ALT FAULT are not annunciated in a 
dual system unless other faults are present.  

RA DISPLAY No. 2
RA DISPLAY No. 1 and No. 2 

Check ADCs, VSIs, wiring, power. 

RADIO ALT No. 1 and No. 2 
TD FAIL

Check both radio altimeters. 
PPI failed.