# Accident 20080804848069A: Piper PA31350, Aniak, AK, August 4, 2008

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 4, 2008, 15:50 local time
- Place: Aniak, AK
- Damage: Substantial damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: General operating rules (Part 91)
- Operator: FFSA
- Location: 61.5817° N, 159.5431° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=61.5817&lon=-159.5431&mi=10
- Aircraft: N40YR, a cancelled registration (https://openairdocs.org/deregistered/N40YR-2009-01-14) (OpenAirDocs)
- Registry model: Piper PA-31-350 (registry code 7103110, https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Registry engine: Lycoming TI0-540 series (registry code 41533, https://openairdocs.org/engine/lycoming-ti0-540-series) (OpenAirDocs)
- Reported make and model: PIPER PA31350
- Reported engine: LYC TIO540S
- People aboard: 6
- Fatal injuries: 0
- Pilot flight hours: 3,400 total, 100 in this make and model, 200 in the last 90 days
- NTSB investigation: [NTSB ANC08LA097](https://openairdocs.org/ntsb/ANC08LA097) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20080804848069A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) ON AUGUST 4, 2008, ABOUT 1550 ALASKA DAYLIGHT TIME A PIPER PA-31-350 AIRPLANE, N40YR, HAD A CONTROLLED CRASHED, ABOUT A MILE STRAIGHT OUT OF RUNWAY 28, ANIAK, ALASKA.  THE AIRPLANE WAS BEING OPERATED AS A VISUAL FLIGHT RULES (VFR)UNDER THE PROVISIONS OF 14 CODE OF FEDERAL REGULATIONS PART 135, WHEN THE ACCIDENT OCCURRED.  VISUAL FLIGHT RULES PREVAILED, THE AIRPLANE TOOK OFF FROM ANIAK HEADING TO GRAYLING, AND HOLY CROSS, ALASKA, WITH A COMMERCIAL PILOT, AND SEVEN (7) PASSENGERS, ONLY 2 MINOR INJURIES REPORTED.  AT ABOUT 200 FT AGL, THE PILOT ENCOUNTERED A LEFT ENGINE LOSS OF POWER, THE PILOT PROCEEDED WITH AN EMERGENCY LANDING.  AT THE INITIAL POINT OF IMPACT, THE NOSE GEAR SHEARED OFF AND THE AIRCRAFT CAME TO REST ABOUT 90 FEET FORWARD ON ABOUT 1 TO 2 FEET FORWARD ON ABOUT 1 TO 2 FEET OF WATER ALONG THE RIVER BANK (KUSKOKWIN).  THE OUTBOARD PORTION OF THE LEFT WING WAS SEVERLY DAMAGED AND PARTIALLY SEPARATED FROM THE INBOARD PORTION OF THE LEFT WING.  THE LEFT MAIN GEAR BROKE OFF AND WAS LYING BACKWARDS UNDER THE LEFT ENGINE/CARGO COMPARTMENT.  THE NOSE CONE DETACHED ITSELF FROM THE AIRCRAFT LAYING ABOUT 40 FEET FORWARD OF THE AIRCRAFT.  THE AIRCRAFT SUSTAINED HEAYV DAMAGE IN THE NOSE SECTION BY THE NOSE GEAR WHEEL WELL.  THE RIGHT WING TIP WAS PARTIALLY DAMAGED.  THE LEFT ENGINE WAS BASICALLY INTACT, WITH ONLY VISIBLE DAMAGED DONE TO THE ENGINE MOUNTS.  THE LEFT ENGINE WAS REMOVED FROM N40YR SENT TO ALASKA AIRCRAFT ENGINES FOR A TEST CELL RUN.  TWO TEST RUNS WERE GIVEN.  THE INITIAL TEST RUN WITH THE EXISTING TURBO CHARGER PRODUCED PARTIAL POWER.  THE SECOND TEST RUN, WITH A NEW TURBO CHARGER PRODUCED MAX POWER SETTINGS IN ACCORDANCE WITH THE MANUFACTURES SPECS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC08LA097](https://openairdocs.org/ntsb/ANC08LA097), Aug 4, 2008: Piper PA-31-350 (N40YR), Aniak, AK, substantial damage. Probable cause: A partial loss of engine power during takeoff due to a failure of the left engine's turbocharger as a result of the failure of a turbine shaft bearing. Contributing to the accident was unsuitable…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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