# SDR ASAA11510155

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2011
- Submitted: July 26, 2011
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 19,399 hours, 5,764 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA11510155

## Discrepancy

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.

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