Service difficulty report · Exciter · Boeing 737890

Difficulty date
January 7, 2012
Submitted
January 9, 2012
Operation
Air carrier
Aircraft
N569AS
Make and model
Boeing 737890
Aircraft serial
35184
Aircraft time
18,319 hours, 5,969 cycles
Part
Exciter
Part number
38880587
Part serial
110821
Condition
Failed
Location
Apu
Part time
23 hours, 44 cycles
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

RAMP REPORTS APU DID NOT START LAST NIGHT. FOUND MAINT. MSG: 49 41180 49 11019 49 11021 AND 49 91007. FOR FLT 49 41180 ATTEMP 1 APU START AND VER APU BEGINS START SEQUENCE. NO SNAPPING OR EGT RISE NOTED. ACOMP FIM49 40 00 810 804. REPLACED APU IGNITION UNIT REF MM49 41 31. STARTS AND OPS NML. FOR FLT 49 11021 ACCOMP FIM49 10 00 810 802. NO FAULTS NOTED. FOR FLT 49 91007 ACCOMP FIM49 90 00 810 803. AT THIS TIME APU FAULT HISTORY SHOWS THIS FLT LOGGED 42 APU STARTS AGO. NO ADDITIONAL FAULTS NOTED. FOR FAULT 49 11019 ACCOMP FIM49 10 810 801. NO FAULTS NOTED.