# SDR AALA991984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N163AA](https://openairdocs.org/aircraft/N163AA), registered now
- Make and model: Doug DC-10-30
- Registry model: [Doug DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30) (OpenAirDocs)
- Aircraft serial: 46914
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Web
- Condition: Corroded
- Location: Nr 3 Pylon
- 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/AALA991984

## Discrepancy

TUL - NR 3 PYLON AFT UPPER WEB HAS FRETTING CORROSION ON BOTH INBOARD AND OUTBOARD EDGES IN 2 AREAS OF LAST 12 INCHES OF ONE AREA INBOARD SIDE OF AFT LIGHTENING HOLE.  TREATED AND REPAIRED PER SRM 54-20-00 FIG 34 (VOL I).  INSTALLED DOUBLER PER SRM 54-20-00 FIG 24 VOL I.  TST:  96,475.29 HOURS.  CYCLES:  19,001.  (X)

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