What was found
DURING APU SERVICING APU APPEARS TO HAVE A OIL LEAK AFT AREA. FOUND APU OIL COOLER SATURATED WITH OIL. REMOVED AND REPLACED APU OIL COOLER OPS / LEAK CHECK GOOD REF AMM 49 91 41. PART EFFECTIVITY VERIFIED BY SEAMC. SEAMC NOTIFIED.
- Difficulty date
- March 22, 2010
- Submitted
- March 24, 2010
- Operation
- Air carrier
- Aircraft
- N558AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35177
- System (JASC)
- 4990 · APU Oil System
- Part
- Oil Cooler
- Part number
- 160564
- Part serial
- 2841
- Condition
- Leaking
- Location
- Apu
- Part time
- 3,056 hours, 2,326 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.