# SDR 2007UALA04161

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2007
- Submitted: October 19, 2007
- Operation: Air carrier
- Aircraft: [N524UA](https://openairdocs.org/aircraft/N524UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 24977
- Aircraft time: 56,130 hours, 20,741 cycles
- Engine: Pwa PW2037
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Condition: Damaged
- Location: Nr 1 Pylon
- 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/2007UALA04161

## Discrepancy

NR 1 PYLON NAC STA 140 OUTBOARD SIDE SKIN FASTENER HOLE ELONGATED THRU SKIN AND DOUBLER.   11-01-07    MAJOR REPAIR ACCOMPLISHED.  REAMED HOLES 1, 2, AND 3 TO BE TRUE ROUND AND CONCENTRIC. ACCOMPLISHED HFEC. INSTALLED FASTNERS IN HOLES 2 AND 3.  MACHINED FREEZE PLUGS WITH 75T6 AND 15-5PH AND INSTALLED FREEZE PLUGS AND FASTNERS IN HOLE 1.

---
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.