# SDR SWAA2022041233412

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2019
- Submitted: April 13, 2022
- Operation: Air carrier
- Aircraft: [N8306H](https://openairdocs.org/aircraft/N8306H), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36983
- Aircraft time: 26,834 hours, 11,654 cycles
- System (JASC): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- Part: Cap
- Condition: Corroded
- Location: Cabin
- 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/SWAA2022041233412

## Discrepancy

PASSENGER CABIN. STA 947; LBL 52; WL 208; TOP SIDE OF T-CAP HAS CORROSION RUNNING UNDER LAV MOUNT. / REMOVED L/H LAV MOUNT STA 942 LBL 52; REMOVED CORROSION ON TOP SIDE OF T-CAP; EVALUATED MATERIAL LOSS; ORIG T. .180'; REMAINING .140';FOUND TO BE OUT OF LIMITS;HFEC BLENDED AREA AND OPEN HOLE; NO DEFECT NOTED; TREATED; PRIMED; REINSTALLED LAV MOUNT AT STA 947 LBL 52 USING REPAIR SHIM IAW SRM 53-70-51-2R-8 PAR H.; SRM 51-10-02-0G-0; SRM 53-70-51-1A-1 FIG 104 DETAIL C; B737 NDT PT 6 51-00-00 PROC 23 AND PROC 16; AMM 51-21-41-370-803. AMM 51-21-72-370-804 VERIFIED CORROSION REMOVAL WITH 10X MAGNIFYING GLASS. TOOL # 29271 DUE 04/03/20

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.