# SDR P9KA20150113001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2015
- Submitted: January 16, 2015
- Operation: Air carrier
- Aircraft: [N4794C](https://openairdocs.org/aircraft/N4794C), registered now
- Make and model: Dhav DHC2MK1
- Aircraft serial: 342FM157
- Aircraft time: 37,254 hours
- System (JASC): [3233 · Landing Gear Actuator](https://openairdocs.org/jasc/3233)
- Part: O-Ring
- Part number: MS28775114
- Condition: Damaged
- Location: Rt Actuator
- Component: Actuator, Dhav
- Component part number: C2UF2569A
- Stage of operation: LD
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P9KA20150113001

## Discrepancy

AS THE AMPHIBIOUS FLOAT EQUIPPED ACFT CONDUCTED ITS LANDING APPROACH, THE PILOT ATTEMPTED TO EXTEND THE LG.  BOTH MLG EXTENDED & BOTH NLG REMAINED RETRACTED.  THE PILOT THEN ATTEMPTED TO RETRACT THE MLG & THEY REMAINED EXTENDED.  THE ACFT LANDED ON THE RUNWAY ON BOTH MLG & THE FLOATS.  THE ACFT SUSTAINED DAMAGE TO THE RUB STRIP & THE OUTER SKIN ON THE LT FLOAT.  INSPECTION REVEALED THAT THE SHAFT SEAL O RING ON THE RT MLG ACTUATOR WAS DAMAGED, ALLOWING LOSS OF HYD FLUID.  THE PLUG THAT HOLDS SAID O RING WAS CORRODED, WHICH MAY HAVE CONTRIBUTED TO THE DAMAGED O RING.  NEITHER THE TOTAL TIME IN SERVICE OF THE ACTUATOR NOR THE TOTAL TIME SINCE DISASSEMBLY & RE SEAL OF THE ACTUATOR COULD BE DETERMINED.

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