# SDR AU960461

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Boeing 737377
- System (JASC): [3233 · Landing Gear Actuator](https://openairdocs.org/jasc/3233)
- Part: O-Ring
- Part number: NAS161133
- Condition: Incorrect Fit
- Location: Lg Ext-Retract S
- Component: 65449121
- Stage of operation: TO
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU960461

## Discrepancy

(AUS) LH MLG RETRACTION ACTUATOR 'O' RING PACKING PNO NAS1611-33 ON PISTON PNO 65-44912-1 WAS FOUND SEPARATED AND FRACTURED IN A NUMBER OF AREAS AND THE INNER FACE WAS BADLY DAMAGED - FURTHER INVESTIGATION FOUND THAT THE SEAL INSTALLATION WAS INCORRECT - THE DAMAGED PACKING HAD INCORRECT BACKUP RINGS - THESE RINGS WOULD NORMALLY ONLY BE USED WHEN USING G.T.  SEAL PNO 7336M59521 -UNAPPROVED PART - PERSONNEL/MAINTENANCE ERROR.

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