# SDR 98ZZZX4314

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Westwind School of Aeronautics Phoenix LLC, repair station WIWR604K](https://openairdocs.org/faa-repair-station/WIWR604K/westwind-school-of-aeronautics-phoenix-llc.md) (OpenAirDocs)
- Aircraft: N97100
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280100
- System (JASC): [5753 · Trailing Edge Flaps](https://openairdocs.org/jasc/5753)
- Part: Skin
- Part number: 05239012
- Condition: Cracked
- Location: Te Flap
- Part time: 1,032 hours
- 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/98ZZZX4314

## Discrepancy

DURING ROUTINE MAINTENANCE, BOTH FLAP LEADING EDGE SKINS WERE FOUND CRACKED.  CRACKS WERE AROUND THE RIVET HOLES WERE P/N 0523923 26, ATTACHES TO FLAPS ON THE BOTTOM SIDE.  CRACKS WERE .25 INCH - .50 INCH IN LENGTH, AND ALMOST EVERY RIVET HOLE WAS AFFECTED.  SUBMITTER STATED POSSIBLE CAUSE WAS IMPROPER DEBURRING ON THE FACTORY'S PART.  ALL FLAP RIVETS SHOULD BE CHECKED CAREFULLY DURING PRE-FLIGHTS AND ROUTING MAINTENANCE.

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