# SDR SWAA2022030373835

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2022
- Submitted: March 3, 2022
- Operation: Air carrier
- Aircraft: [N8681M](https://openairdocs.org/aircraft/N8681M), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36904
- Aircraft time: 20,561 hours, 9,510 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: 146A750251
- Condition: Corroded
- Location: Fwd Cargo Bay
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022030373835

## Discrepancy

FWD CARGO BAY HAS CORROSION ON LOWER BULKHEAD SUPPORT BS 500I RBL13 WL156 / [01] EVALUATED CORROSION; BS 500I RBL 13 WL 156; FOUND 0.026 REMOVED FROM ORIG 0.071 IN 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-30-08-1A-1 USING DIAL DEPTH GAUGE ATS 2473;[02] VERIFIED CORRECTIVE ACTION 1. OUT OF LIMITS;[03] REMOVED BULKHEAD SUPPORT BS 500I RBL25 TO LBL25 WL156 PER SRM 51-40-02-0G-0;[04] LOCATED ; DRILLED; AND DEBURRED NEW FCB LOWER BULKHEAD SUPPORT BS 500I; RBL 25-LBL 25; WL 156 IAW SRM 51-40-05-0G-0; DWG# 143A7902. OK TO INSTALL LOWER BULKHEAD SUPPORT.;[05] VERIFIED STEP 3 AND 4. OK TO INSTALL.;[06] INSTALLED NEW FCB LOWER BULKHEAD SUPPORT BS 500I; RBL 25-LBL 25; WL 156 IAW SRM 51-40-02-0G-0; DWG# 143A7902.;[07] VERIFIED CORRECTIVE ACTION STEP 6.;[08] COMPLETE;[09] COMPLETE

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