SDR 94UAL737281

Service difficulty report · Apu · Boeing 737*

Difficulty date: January 4, 1995
Submitted: March 26, 2000
Operation: Air carrier
Make and model: Boeing 737*
System (JASC): 4920 · APU Core Engine
Part: Apu
Condition: Fod
Location: Apu Compt
Stage of operation: TX
Nature of condition: C, J
Precautionary procedure: F

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

What was found

AT DEPARTURE, APU AUTO SHUTDOWN. WHEN RESTART WAS ATTEMPTED, THERE WAS A FIRE WARNING AND THE BOTTLE WAS DISCHARGED. APU INOPED AND EXTERNAL INSPECTION COMPLETED. APU WAS REPLACED. FOUND RAG IN THE INLET AND THE ROTATING GROUP HAD HIT THE STATIONARY GROUP CAUSING WHAT WE CALL METAL SPLATTER. THIS RESULTED IN DISASSEMBLY OF THE APU FOR FULL REBUILD.