SDR ASAA2017052620900

Service difficulty report · Fuel Control · Boeing 737990ER

Difficulty date: May 26, 2017
Submitted: May 30, 2017
Operation: Air carrier
Aircraft: N442AS
Make and model: Boeing 737990ER
Aircraft serial: 43293
Aircraft time: 13,951 hours, 4,583 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: Fuel Control
Part number: 4419215
Part serial: CUC17147
Condition: Failed
Location: Apu
Part time: 6,441 hours, 10,352 cycles
Stage of operation: NR
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

APU FAULT LIGHT ILLUMINATED ON START. ACFT GROUNDED. PERFORMED APU BITE, IAW AMM 49-61-00, FOUND FAULT CODE 49-31175. FOUND FCU BAD, REF B737-900 FIM 49-32 TASK 805. REMOVED AND REPLACED FCU, IAW AMM 49-31-11. OP CHECKED NORMAL, NO LEAKS NOTED.