# SDR ASAA2025032957313

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 2025
- Submitted: April 16, 2025
- Operation: Air carrier
- Aircraft: [N251AK](https://openairdocs.org/aircraft/N251AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 62470
- Aircraft time: 28,926 hours, 9,363 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A812325
- 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/ASAA2025032957313

## Discrepancy

AFT BAG PIT DOOR SURROUND, FLOOR JUST INSIDE DOOR CORRODED ACROSS ENTRYWAY. GROUNDED - YES. REMOVED CORROSSION ORIG. THICKNESS=.050" REMOVED= .014" REMAINING= .036. FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-60-15-1A-1. REMOVED AFT PIT THRESHOLD WEB, LOCATED & DRILLED NEW WEB P/N: 146A8123-25 P.O. 0 & INSTALLED IAW B737-900ER SRM 51-40-02, SRM 51-40-05, BAC DWG 146A8120 REV.A & BAC DWG 146A8340 REV G.

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