# SDR ASAA2018100526415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2018
- Submitted: October 9, 2018
- Operation: Air carrier
- Aircraft: [N435AS](https://openairdocs.org/aircraft/N435AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43292
- Aircraft time: 19,946 hours, 6,575 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Seal
- Part number: B0E23530001
- 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/ASAA2018100526415

## Discrepancy

WHILE ACCOMPLISHING T/C 78349000 FOUND SIGMA SEAL HEIGHT FROM THE BOTTOM TO THE TOP AT 1.15". HEIGHT IS OUT OF LIMITS. GROUNDED - YES. REMOVED AND REPLACE SIGMA SEAL REF AMM 49-15-11.

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