SDR HALA2011010400009

Service difficulty report · Ecu · Boeing 7673CB

Difficulty date: January 4, 2011
Submitted: January 6, 2011
Operation: Air carrier
Aircraft: N590HA
Make and model: Boeing 7673CB
Aircraft serial: 33467
Aircraft time: 31,387 hours, 5,889 cycles
Engine: Pwa PW4060
System (JASC): 4940 · APU Start/Ignition System
Part: Ecu
Part number: 211734220
Part serial: 45A0129
Condition: Malfunctioned
Location: Apu
Part time: 6 hours, 1 cycles
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

ETOPS SIGNIFICANT SYS - APU AUTO SHUTDOWN AT GATE RESTART. AUTO SHUTDOWN AGAIN. IAW MOC ACCOMP FIM 49-11-00/101, FIG 138 AUTO SHUTDOWN. "DC PWR LOSS" ON BITE. BLOCKS 1, 20, 42 SYS OK. BITE CK ECU DOES NOT LAMP TEST, SELF TEST. BITE CK FAULT REASONS ECU. REPLACED ECU IAW AMM 49-61-05. OPS CK GOOD.

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