# SDR ASAA2024021448065

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2024
- Submitted: February 28, 2024
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 42,009 hours, 13,349 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Support
- Part number: 143A948534
- Condition: Corroded
- Location: Bulkhead
- 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/ASAA2024021448065

## Discrepancy

FWD PIT, AFT BULKHEAD IS CORRODED. GROUNDED - YES. REMOVED DAMAGE FROM FWD PIT AFT BULKHEAD R/H SUPPORT IAW B737-900ER SRM 53-30-08-1A-1.2.C.1. REMAINING THICKNESS: .054" MINIMUM ALLOWABLE REMAINING THICKNESS: .056" AND IS FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-30-08-1A-1.4.A.2. REPAIRED FWD PIT R/H BULKHEAD SUPPORT AT STA 500L IAW B737-900ER SRM 51-40-05 AND SRM 51-40-02.

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