What was found
DURING APU REPLACEMENT FOUND SIGMA SEAL FOR APU INLET OUT OF LIMITS PER T/C 78349000. REMOVED AND REPLACED APU AIR INLET SIGMA SEAL REF AMM 49 15 11.
- Difficulty date
- July 21, 2011
- Submitted
- July 26, 2011
- Operation
- Air carrier
- Aircraft
- N557AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35176
- Aircraft time
- 19,399 hours, 5,764 cycles
- System (JASC)
- 4910 · APU Cowling/Containment
- Part
- Seal
- Part number
- 353A40801
- Condition
- Out Of Limits
- Location
- Apu Inlet
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.