# SDR 2006FA0000221

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2006
- Submitted: March 15, 2006
- Operation: General aviation
- Aircraft: N2163N
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 447995222
- Engine: Lyc O360*
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Downlock
- Part number: 8627503
- Condition: Failed
- Location: Nose Gear
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006FA0000221

## Discrepancy

NOSE GEAR COLLAPSE DURING ROLLOUT AFTER BRAKE APPLICATION.  PILOT HAD 3 GREEN LIGHTS.  HOOK PORTION OF DOWNLOCK PN 86275-03 FOUND CRACKED, BROKEN OFF.  FOUND BROKEN NAS 464P4-27 ALSO FOUND FAILED.  BOLT FRACTURED MID SHANK.  HEAD PORTION OF BOLT NEVER FOUND.  REMAINDER OF BOLT WITH NUT AND COTTER PIN INSTALLED FOUND STILL INSTALLED IN DRAGLINK ASSY.  UNCLEAR AS TO WHAT FAILED FIRST.  DOWNLOCK TT 8258 HRS, BOLT TT UNKNOWN.

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