# SDR SWAA2020030942275

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2020
- Submitted: March 9, 2020
- Operation: Air carrier
- Aircraft: [N7702A](https://openairdocs.org/aircraft/N7702A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 33917
- Aircraft time: 53,747 hours, 28,462 cycles
- System (JASC): [5311 · Fuselage Main, Frame](https://openairdocs.org/jasc/5311)
- Part: Failsafe
- Part number: 147A100660
- 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/SWAA2020030942275

## Discrepancy

***CORROSION***  ON FAIL SAFE CHORD AT B.S. 1006, BETWEEN STRINGERS 27 LEFT AND 27 RIGHT, W.L. 185.`         EVALUATED CORROSION ON FAIL SAFE CHORD AT BS 1006 BETWEEN STRINGERS 27 LEFT AND 27 RIGHT, WL 185 PART #147A1006-60, FOUND .025 REMOVED, ORIGINAL THICKNESS .094 IN A 1"X2" AREA, FOUND TO BE OUT OF LIMITS IAW SRM 53-00-07-1A-1, REMOVED AND REPLACED WITH NEW FAIL SAFE CHORD AT BS 1006, STR 23L-24R WL 185 IAW DWG 147A1006, DWG 147A0040 AND DWG 147A0002

---
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.