# SDR 98ZZZX4225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N19MK](https://openairdocs.org/aircraft/N19MK), registered now
- Make and model: Cessna 560CESSNA
- Aircraft serial: 5600395
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Torque Tube
- Part number: 55421029
- Condition: Failed
- Location: Nlg Door
- Part time: 1,339 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/98ZZZX4225

## Discrepancy

ON PRE-FLIGHT, CREW FOUND NLG DOORS PARTIALLY OPEN.  NO UNUSUAL INDICATION ON PREVIOUS LANDING.  FOUND BROKEN WELD ON LEFT END OF TORQUE TUBE (THE END PIECE ACTS AS A HINGE FOR THE ASSY).  IT APPEARS THIS WAS A MFG DEFECT.  POOR WELD PENETRATION WHERE BREAK OCCURRED.

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