# SDR USAA2012041800023

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2012
- Submitted: April 19, 2012
- Operation: Air carrier
- Aircraft: N427US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24549
- Aircraft time: 61,145 hours, 40,839 cycles
- System (JASC): [5322 · Fuselage Internal Mounting Structure](https://openairdocs.org/jasc/5322)
- Part: Shear Tie
- Condition: Corroded
- Location: Fuselage
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012041800023

## Discrepancy

Q1 CHECK - LEVEL 2 FILIFORM CORROSION ON FORWARD CARGO COMPARTMENT SHEAR TIE AT BS 500F, LBL 14.  REPAIRED SHEAR TIE AT BS 500F, LBL 14 IAW B737 SRM SRM 53-00-07-2R-7 FIG 201.

---
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.