# SDR UPS99228757

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N931UP](https://openairdocs.org/aircraft/N931UP), registered now
- Make and model: Boeing 727-25C
- Registry model: [Boeing 727-25C](https://openairdocs.org/model/boeing-727-25c) (OpenAirDocs)
- Aircraft serial: 19858
- System (JASC): [5744 · Wing, Control Surface Attach Fittings](https://openairdocs.org/jasc/5744)
- Part: Fitting
- Part number: 652165113
- Condition: Corroded
- Location: Nr 4 Flap Track
- 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/UPS99228757

## Discrepancy

INSPECTION TYPE-C, NR 4 FLAP TRACK FORWARD MOUNT FITTING HAS CORROSION IN MOUNT HOLE BORES.  NR 4 FLAP TRACK FITTING WAS REPLACED IAW OHM 20-50-01 PG 1 PARA 2 AND TABLE 1 AND M/M 27-51-31 PARA D8, ON NRC 879844.

---
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.