SDR AMTA200800037

Service difficulty report · Relay · Boeing 75723N

Difficulty date: January 28, 2008
Submitted: February 22, 2008
Operation: Air carrier
Aircraft: N518AT
Make and model: Boeing 75723N
Aircraft serial: 27974
Engine: Rroyce RB211535E4
System (JASC): 4930 · APU Engine Fuel and Control
Part: Relay
Condition: Defective
Location: Apu
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

APU FAULT LIGHT ILLUMINATED AND EICAS, APU VAV MESSAGE DISPLAYED. COULD NOT DUPLICATE FAULT, FOR COMPANY CONVENIENCE. REMOVED AND REPLACED APU SHUTOFF VALVE DISAGRE RELAY K10160, AND SHUTOFF VALVE DISAGREE ENABLE RELAY, IAW WDM 28-25-21, OPS NORMAL. (K)

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