# SDR ASAA2023122347334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2023
- Submitted: January 18, 2024
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41731
- Aircraft time: 41,970 hours, 13,088 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 143A7501192
- Part serial: UNK
- Condition: Corroded
- Location: Fwd Cargo
- 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/ASAA2023122347334

## Discrepancy

FWD PIT R/H PANEL STA 500E+2 TO 500H+10 HAS CORROSION. GROUNDED - YES. REMOVED THE CORROSION FROM THE FWD PIT R/H TRANSITION PANEL AT STA 500E+2 TO 500HD+10 IAW B737-900ER SRM 53-00-53-1A-2.2.D. ORIG THICKNESS IS .040" IAW B737-900ER SRM 53-30-53-0I-2 TABLE 2. REMOVED .007", REMAINING THICKNESS IS .030" AND IS FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2.4(2) REMOVED AND REPLACED FWD PIT R/H TRANSITION PANEL STA 500D+9 TO 500H+10 IAW B737-900ER SRM 53-00-53-2R-5.

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