# SDR SWAA2021100116962

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2021
- Submitted: April 27, 2022
- Operation: Air carrier
- Aircraft: [N7751A](https://openairdocs.org/aircraft/N7751A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36717
- Aircraft time: 43,609 hours, 22,223 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Cargo Track
- Part number: 143A750110
- 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/SWAA2021100116962

## Discrepancy

CORROSION ON TRACK TIEDOWN IN THE WELL AT FWD CARGO BAY BS500 RBL13 WL156. ; / [01] REMOVED CORROSION ON CARGO TRACK TIEDOWN AT FWD CARGO BAY BS 500 RBL 13 WL 156 MATERIAL LOSS .012 L=1.8; W=.90 MATERIAL LOSS MAX ALLOWABLE REMOVED .040 FOUND TO BE WITHIN LIMITS AREA PER SRM 53-00-53-1A-2 STEP 4 B FIG. 103 OK TO TREAT AND PRIME AREA TOOL USED ID #ATS1737 DATE 07/2021 DUE07/2022; [02] VERIFIED THE CORROSION REMOVAL AND IN LIMITS PER SRM 53-00-53-1A-2 STEP 4 B FIG. 103. OK TO TREAT AND PRIME.; [03] APPLIED CHEMICAL CONVERSION COATING AND PRIMED REWORKED AREA AT CARGO TRACK TIEDOWN FWD ARGO BS 500 RBL 13 WL 156 PER AMM 51-21-41-370-802 AND AMM 51-21-72-370-804. ALL WORK COMPLETED; [04] VERIFIED THE CHEMICAL CONVERSION AND PRIMER APPLICATION PER AMM 51-21-41-370-802 AND AMM 51-21-72-370-804.

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