# SDR SWAA2022013159334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2022
- Submitted: January 31, 2022
- Operation: Air carrier
- Aircraft: N233LV
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32501
- Aircraft time: 53,746 hours, 31,891 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Condition: Corroded
- Location: Fuselage
- Stage of operation: UK
- 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/SWAA2022013159334

## Discrepancy

CORROSION FWD CARGO COMPARTMENT AFT BULKHEAD SIDEWALL SUPPORT ANGLE BS 500D RBL 25 ; / [01] UPDATED MEASUREMENT TABLE; [02] EVALUATED CORROSION; FOUND 0.045 MATERIAL REMAINING FROM BS 500D RBL 26 WL156 MAX ALLOWABLE OF NO LESS THAN 0.056 REQUIRED IN A 1'X1' AREA. FOUND TO BE OUT OF LIMITS PER SRM 53-30-08-1A-1 USING ID 4566A S/N UNKNOWN; [03] VERIFIED EVALUATED CORROSION; FOUND 0.045 MATERIAL REMAINING FROM BS 500D RBL 26 WL156 MAX ALLOWABLE OF NO LESS THAN 0.056 REQUIRED IN A 1'X1' AREA. FOUND TO BE OUT OF LIMITS PER SRM 53-30-08-1A-1.; [04] LOCATED AND DRILLED FCB AFT BULKHEAD BS 500D; RBL25; IAW SRM 51-40-05-0G-0; DWG 143A7902.

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