# SDR UPS99229280

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N925UP](https://openairdocs.org/aircraft/N925UP), registered now
- Make and model: Boeing 727-31C
- Registry model: [Boeing 727-31C](https://openairdocs.org/model/boeing-727-31c) (OpenAirDocs)
- Aircraft serial: 19230
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Doubler
- Condition: Corroded
- Location: Bs 870
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS99229280

## Discrepancy

INSPECTION TYPE:SI WHILE WORKING NRC 888366 (FUSE 123) LT 870 ACCESS COVER (PANEL) DOUBLER RING IS CORRODED LBL 58, BS 870, WL 180.  AFTER THE CORROSION REMOVAL, THE DOUBLER RING WENT BEYOND THE SRM LIMITS.  REMOVED DOUBLER RING AND FABRICATED A NEW ONE.  ALODINED AND PRIMED AND INSTALLED DOUBLER RING PER SRM 51-10-2, 51-10-3 AND 51-30-2.

---
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.