SDR ASAA2015013110492

Service difficulty report · Fcu · Boeing 737890

Difficulty date: January 31, 2015
Submitted: February 10, 2015
Operation: Air carrier
Aircraft: N530AS
Make and model: Boeing 737890
Aircraft serial: 36578
Aircraft time: 18,974 hours, 5,702 cycles
System (JASC): 4930 · APU Engine Fuel and Control
Part: Fcu
Part number: 000
Condition: Malfunctioned
Location: Apu
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

ON 1ST START ATTEMPT APU FAULT LIGHT ILLUMINATED, AFTER FOLLOWING QRH. SECOND APU START WAS SUCCESSFUL. ACFT GROUNDED. TROUBLE SHOT APU. APU START AND OPS TEST PERFORMED IAW AMM 49-11-00. OPS NORMAL. PERFORMED APU BITE PROCEDURE IAW FIM 49-60, TASK 801. BITE TEST FLAGGED CODE 49-31016, OVER TEMPERATURE SHUTDOWN AND 49-31171, FCU FLOW DISAGREES WITH COMMAND. REMOVED AND REPLACED APU PER TASK CARD 78349010. OPS TEST GOOD.