SDR HALA2009020500042

Service difficulty report · Starter · Boeing 76733AER

Difficulty date: February 6, 2009
Submitted: February 6, 2009
Operation: Air carrier
Aircraft: N589HA
Make and model: Boeing 76733AER
Aircraft serial: 33422
Aircraft time: 24,212 hours, 4,595 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Starter
Part number: 4901568
Part serial: 494911
Condition: Failed
Location: Apu
Part time: 21,910 hours, 9,113 cycles
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

ETOPS SIGNIFICANT SYSTEMS, APU FAILED TO START ON ARRIVAL, APU FAULT. CONFIRMED APU CLUTCH DISENGAGES, PERFORMED TROUBLESHOOTING IAW FIM 49-11-00 FIG 103/104 BITE APU STARTER. CHECK APU STARTER, FOUND BURNED HOLE ON BYPASS WEAR INDICATOR AREA. CHECK APU CLUTCH FOUND FREE MOVING. REPLACED STARTER CLUTCH IAW AMM 49-41-06 PB 401. REPLACED APU STARTER IAW AMM 49-01-01 PB 401. APU START SATISFACTORY.

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