# SDR ASAA2025072159866

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2025
- Submitted: August 6, 2025
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 67,164 hours, 20,442 cycles
- System (JASC): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Tee Angle
- Part number: 148A8640Y14
- Condition: Corroded
- Location: Zone 100
- 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/ASAA2025072159866

## Discrepancy

APU COMPARTMENT STRUCTURE R/H WALL AFT LOWER FASTENER HOLE FOR THE APU AFT AIR INLET HAS CORROSION. GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT LIMITS, REPLACED TEE IAW B737-800 SRM 51-40-02-0G-0& 51-40-05-0G-0W= 1" O= .061 L= 2" R= .031" D= .030".

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