# SDR SWAA2023110716190

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2023
- Submitted: November 7, 2023
- Operation: Air carrier
- Aircraft: N792SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27887
- Aircraft time: 77,105 hours, 45,931 cycles
- System (JASC): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- Part: Shear Tie
- Part number: UNKNOWN
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2023110716190

## Discrepancy

CORROSION ON SHEAR TIE P/N 143A3010-123 BS 400 BETWEEN STR'S 21L AND 22L<[01] UPDATED STEPS 1-5 AND MEASUREMENT PARAMETERS.;[02] TASK CARD COMPLETED.;[03] REMOVED COROSION ON SHEAR TIE; (REMOVED OF DAMAGED MATERIAL ON EDGE) DIMENSION X= WITH OF MATERIAL REMOVED: 0.250' IAW SRM 51-10-02 PARAGRAPH 15.EVALUATED REWORKED AREA; MATERIAL LOSS 0.250' ON AT EDGE FOUND OUT ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-07-1A-1. REMOVED SHEAR TIE. FABRICATED A REPLACEMENT; AND INSTALLED NEW SHEAR TIE; IAW SRM 51-40-05; AMM 51-21-72-370-804; SRM 51-40-02; DWG 143A7902 REV: -; DWG 143A1211 REV: -;[04] VERIFIED CORRECTIVE ACTION #3<BR>VERIFIED MEASUREMENTS

---
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.