AIRCRAFT
DA 42 NG AMM
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Doc # 7.02.15
Rev. 4
34-10-00
Page 101
15 Mar 2018
Trouble-Shooting
1. General
The table below lists the trouble you could have with the flight environment data system. If you have
the trouble detailed in the Trouble column read across to the Possible Cause column. Then do the
repair given in the Repair column. For more data about trouble-shooting the Standby Attitude Module
(if OÄM 42-270 is installed) refer to the Installation Manual of the MD302.
Trouble
Possible Cause
Repair
Altimeter lags or reads
incorrectly. VSI (on ICS) reads
incorrectly.
Faulty altimeter.
Blocked or kinked static hose.
Water in static system.
Replace altimeter.
Clear/straighten the hose.
Drain the static system.
Airspeed indication incorrect
(low).
Faulty indicator.
Blocked or kinked Pitot hose.
Water in the system.
Leak in Pitot hose.
Replace ASI.
Clear/straighten the hose.
Drain the Pitot system.
Do a Pitot-static leak check.
Pitot heater does not operate.
Pitot circuit breaker open.
Pitot circuit breaker defective.
Pitot heat wiring open-circuit.
Pitot probe defective.
Close the circuit breaker. If the
circuit breaker opens again, do
a test for a short-circuit in the
Pitot heat wiring system.
Replace the circuit breaker.
Do a continuity test of the Pitot
heat wiring system. Repair or
replace defective wiring. Refer
to Chapter 92 for the Wiring
Diagrams.
Replace the Pitot probe.
OAT indication (on ICS)
incorrect.
OAT probe defective.
Replace the OAT probe.
Summary of Contents for DA 42 NG
Page 933: ...AIRCRAFT DA 42 NG AMM Fuel Doc 7 02 15 Rev 4 28 TITLE Page 1 15 Mar 2018 CHAPTER 28 FUEL ...
Page 1459: ...AIRCRAFT DA 42 NG AMM Lights Doc 7 02 15 Rev 4 33 TITLE Page 1 15 Mar 2018 CHAPTER 33 LIGHTS ...
Page 1711: ...AIRCRAFT DA 42 NG AMM Doors Doc 7 02 15 Rev 4 52 TITLE Page 1 15 Mar 2018 CHAPTER 52 DOORS ...
Page 1853: ...AIRCRAFT DA 42 NG AMM Wings Doc 7 02 15 Rev 4 57 TITLE Page 1 15 Mar 2018 CHAPTER 57 WINGS ...
Page 2071: ...AIRCRAFT DA 42 NG AMM Engine Doc 7 02 15 Rev 4 72 TITLE Page 1 15 Mar 2018 CHAPTER 72 ENGINE ...
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