# SDR UALA2011122207075

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2011
- Submitted: January 13, 2012
- Operation: Air carrier
- Aircraft: [N105UA](https://openairdocs.org/aircraft/N105UA), registered now
- Make and model: Boeing 747451
- Aircraft serial: 26473
- Aircraft time: 71,896 hours, 8,539 cycles
- Engine: Pwa PW4056
- System (JASC): [3222 · Nose/Tail Landing Gear Strut/Axle](https://openairdocs.org/jasc/3222)
- Part: Seal
- Condition: Damaged
- Location: Nlg Strut
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011122207075

## Discrepancy

ON PUSH BACK SYD USED A SUPER TUG. NOISES HEARD IN NOSE GEAR DURING PUSH.  GEAR DISAGREE CAUTION MESSAGE, (GEAR LEVER WAS NOT JAMMED IN THE OFF POSITION). ALSO HAD A GEAR DOOR ADVISORY MESSAGE, WENT AWAY. FOUND NOSE GEAR STRUT FLAT.  REPLACED SEALS AND PACKING REF MM. ACCOMPLISHED LANDING WITH DEFLATED STRUT CHECK IAW MM 5-51-55. PERFORMED GEAR SWING, WHICH WAS SUCCESSFUL AND INSPECTION PERFORMED RII INSPECTION.

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