SDR ASAA2016071317367

Service difficulty report · Apu · Boeing 737890

Difficulty date: July 13, 2016
Submitted: July 15, 2016
Operation: Air carrier
Aircraft: N519AS
Make and model: Boeing 737890
Aircraft serial: 36482
Aircraft time: 28,782 hours, 8,594 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: Apu
Part number: 38007021
Condition: Failed
Stage of operation: CR
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

FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT FL 360. ACFT GROUNDED. PERFORMED APU BITE, FOUND FAULT CODE 49-41010. PERFORMED FIM 49-40 TASK 801, NO ACCELERATION SHUTDOWN. UNABLE TO DUPLICATE FAULT ON GROUND. REMOVED AND REPLACED FUEL FLOW DIVIDER AND SOLENOID IAW AMM 49-31-15. OPS CHECK NORMAL, APU BITE TEST PASS, NO CURRENT FAULTS.