# SDR 97ZZZM520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N553NA](https://openairdocs.org/aircraft/N553NA), registered now
- Make and model: Boeing 727-2J7
- Registry model: [Boeing 727-2J7](https://openairdocs.org/model/boeing-727-2j7) (OpenAirDocs)
- Aircraft serial: 20707
- System (JASC): [7110 · Engine Cowling System](https://openairdocs.org/jasc/7110)
- Part: Cowl
- Condition: Corroded
- Location: Nr 1 Engine
- 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/97ZZZM520

## Discrepancy

EXFOLIATED CORROSION ON NR 1 ENGINE FIXED COWL FORWARD SKIN.  CORROSION BETWEEN HEAT SHILL AND SKIN.  REMOVED FASTENERS AND SKIN.  FABRICATED NEW SKIN FROM 2024-T3 .032 INCH 21.75 INCH BY 30.5 INCH.  DRILLED, COUNTERSUNK AND DEBURRED.  ALODINED AND PRIMED NEW SKIN AND INSTALLED IAW SRM 51-30-2, 54-10-0, 51-10-2, 54-30-0 AND MM 51-20-11.

---
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.