SDR ASAA2014013006740

Service difficulty report · Ignition Unit · Boeing 737890

Difficulty date: January 30, 2014
Submitted: February 3, 2014
Operation: Air carrier
Aircraft: N508AS
Make and model: Boeing 737890
Aircraft serial: 35691
Aircraft time: 20,976 hours, 6,517 cycles
System (JASC): 4940 · APU Start/Ignition System
Part: Ignition Unit
Part number: 38880587
Part serial: 076971102292
Condition: Failed
Location: Apu
Part time: 8,548 hours, 8,393 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

APU FAULT LIGHT ILLUMINATED TWO ATTEMPS. ACFT GROUNDED. PERFORMED FIM TASK 49-40, TASK 802, FOUND IGNITION UNIT BAD. R & R IGNITION UNIT REF AMM 49-41-31. APU OPS CHECKED GOOD. CLEARED MEL 49-1B, REMOVED PLACARD C/N 0130006, NO S/P, SEAM C.