# SDR 97ZZZX826

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N4990J](https://openairdocs.org/aircraft/N4990J), registered now
- Make and model: Piper PA-28R-180
- Registry model: [Piper PA-28R-180](https://openairdocs.org/model/piper-pa-28r-180) (OpenAirDocs)
- Aircraft serial: 28R30746
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Part number: 784754
- Condition: Cracked
- Location: Rt Well
- Part time: 5,137 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/97ZZZX826

## Discrepancy

REMOVED THE LT AND RT MLG SIDE BRACE STUDS TO C/W AD 95-20-07.  PRIOR TO INSTALLING THE SIDE-STAY ASSY SUPPORT BRACKET, THE MECHANIC CLEANED THE MATING SURFACE AT THE SPAR AND RIB, AND NOTICED A CRACK IN THE RIBS, P/N 78475-4 AND P/N 78475-5 IN THE BEND RADIUS OF THE FORWARD VERTICAL FLANGE.  THE CRACKS WERE ABOUT .50 INCH TO .75 INCH LONG.

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