# SDR SWAA2020041441031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2020
- Submitted: April 14, 2020
- Operation: Air carrier
- Aircraft: [N427WN](https://openairdocs.org/aircraft/N427WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29831
- Aircraft time: 61,697 hours, 36,249 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Doubler
- Condition: Damaged
- 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/SWAA2020041441031

## Discrepancy

EXISTING REPAIR DOUBLER INSTALLED HAS A MULTIPLE TOOLING MARK AT BS 377 TO BS 404 BETWEEN S-17L AND S-18L / EXISTING REPAIR DOUBLER AT BS 377 TO BS 404 BETWEEN S17L AND S18L WAS REPAIRED IAW ATS ER 20-02220 REV IR DATED 07APR20 AND EA 1-753-36799 REV IR.

---
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.