# SDR 96ZZZX1402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N199DS](https://openairdocs.org/aircraft/N199DS), registered now
- Make and model: Piper PA-31-310
- Registry model: [Piper PA-31-310](https://openairdocs.org/model/piper-pa-31-310) (OpenAirDocs)
- Aircraft serial: 317400980
- System (JASC): [5280 · Landing Gear Doors](https://openairdocs.org/jasc/5280)
- Part: Hinge
- Part number: 47529032
- Condition: Cracked
- Location: Rt Mlg Door
- 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/96ZZZX1402

## Discrepancy

DURING SCHEDULED ACFT INSPECTION, RT MAIN GEAR INBD DOOR'S FWD HINGE FORGING FND CRACKED IN INNER RADIUS.  THE CRACK IS DETECTABLE VISUALLY EVEN THOUGH PART IS PAINTED; VISUAL PORTION OF CRACK IS THROUGH APPROX 25 PERCENT OF MATERIAL THICKNESS.  SUBMITTER STATES THIS IS THE HINGE INSTALLED IAW AD 80-26-05, & PIPER SB 682.  THIS IS 7TH CRACKED OR FAILED HINGE FND SINCE BEGINNING OF 1995 BY THIS OPERATOR.  WITH AD 80-26-05 UP FOR REVISION (DOCKET 90-CE-59-AD), FAA & PIPER MAY WANT TO CONSIDER A FURTHER IMPROVED HINGE FORGING.  WHILE CRACK RATE OF CURRENT P/N IS LESS THAN OLD PRE-AD STYLE, PROBLEM HAS NOT BEEN CORRECTED & BEARS FURTHER IMPROVEMENT.

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