Service difficulty report · Starter Gen · Boeing 737890

Difficulty date
January 2, 2009
Submitted
January 6, 2009
Operation
Air carrier
Aircraft
N570AS
Make and model
Boeing 737890
Aircraft serial
35185
Aircraft time
7,450 hours, 2,165 cycles
Engine
Ge CFM567B24
Part
Starter Gen
Part number
28B5457
Part serial
17B0741
Condition
Malfunctioned
Location
Apu
Part time
7,450 hours, 2,165 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

APU FAULT LITE ILLUMINATED. GROUNDED YES. REMOVED AND INSTALLED A NEW APU STARTER GENERATOR IAW AMM 49-41-21 00 801 APU MAINT MSG 49 41012 NO APU ROTATION. DURING STARTER GENERATOR INSTALLATION TEST APU STARTED BUT AUTOSHUT DOWN AFTER 1 MIN FAULT LIGHT ILLUMINATED. FAULT CODE 49 94299 STARTER GENERATOR OIL FILTER CLOGGED. INSPECTED MAGNETIC DRAIN PLUG NO CONTAMINATION FOUND. REMOVED AND REPLACED OIL FILTER ELEMENTS AND RESET OIL FILTER INDICATOR ON LUBE FILTER. FOUND NO CONTAMINATION IN FILTERS. ACCOMPLISHED FIM TASK 49-90-00 810 809 AND STARTER GENERATOR INSTALLATION TEST REF MM 49-41-21 400 801 STEP H. NO MORE FAULTS FOUND.