# SDR CALA2014122392865

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2014
- Submitted: December 23, 2014
- Operation: Air carrier
- Aircraft: [N120UA](https://openairdocs.org/aircraft/N120UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 29166
- Aircraft time: 64,200 hours, 7,348 cycles
- Engine: Pwa PW4056
- System (JASC): [3222 · Nose/Tail Landing Gear Strut/Axle](https://openairdocs.org/jasc/3222)
- Part: Schrader Valve
- Condition: Defective
- Location: Nlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014122392865

## Discrepancy

ON TAKEOFF THE CREW HEARD A LOUD NOISE & THE NOSE GEAR WOULD NOT RETRACT.  FOUND NLG STRUT FLAT, CHANGED SHRADER VLV, SERVICED STRUT & DID A GEAR SWING.  OPERATIONS CHECKED GOOD.

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