# NTSB ANC82DA060: Piper PA-22, N891A, 65 Mi.Ene Of Mc, AK, July 17, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 16, 1982, 22:30 local (Jul 17, 1982, 06:30 UTC)
- Place: 65 Mi.Ene Of Mc, AK
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report July 16, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 69666
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82DA060
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69666/pdf
- Page: https://openairdocs.org/ntsb/ANC82DA060

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - engine assembly,other - overtorque (cause)
  - maintenance - inadequate, other maintenance personnel (cause)
  - engine assembly,other - failure,total (cause)
- Forced landing, landing - flare/touchdown
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - dirt bank/rising embankment (contributing factor)
- Nose over, landing - roll

## Analysis

DURING FLIGHT, THE PILOT NOTICED A PROGRESSIVE LOSS OF POWER. HE ELECTED TO MAKE AN EMERGENCY LANDING ON A GRAVEL BAR. DURING THE LANDING, THE AIRCRAFT ROLLED THROUGH A SHALLOW SLOUGH WHERE THE LEFT MAIN GEAR HIT A LOG. THE NOSE GEAR THEN HIT A BANK AT THE EDGE OF THE SLOUGH AND THE PLANE WENT OVER ON ITS BACK. THE ENGINE DIED WHEN THE AIRCRAFT TURNED OVER. AN EXAMINATION OF THE ENGINE REVEALED THAT THE NO 3 ROCKER ARM EXHAUST VALVE ADJUSTMENT BOLT HAD FAILED AND WAS LOOSE IN THE VALVE COVER.THERE WAS EVIDENCE THAT THE BOLT MAY HAVE BEEN OVERTORQUED. THE BOLT SHOULD HAVE BEEN TORQUED TO 450 INCH POUNDS. A CHECK OF THE OTHER BOLTS REVEALED TAHT THEIR TORQUE VALUES RANGED FROM 150 TO 450 INCH POUNDS. THE ENGINE HAD A TOTAL OF 3.7 HOURS OF OPERATION SINCE IT HAD A TOP OVERHAUL.

## Aircraft

- Registration: [N891A](https://openairdocs.org/deregistered/N891A-2013-05-17), registration cancelled 2013-05-17, S/N 22-192, built 1951 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22](https://openairdocs.org/model/piper-pa-22) (registry code 7102202) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-192
- Airframe hours: 3684
- Engines: LYCOMING O-290-D 125 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Paul Moore & Dave Armstrong
- Registered owner: Paul Moore & Dave Armstrong
- Departed: Z22, WILLOW, AK
- Destination: 5N1, NIKOLI, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 86 total, 23 in this make and model, 49 as pilot in command, 3 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Visibility: 10 statute miles
- Temperature: 113 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19820717030519A](https://openairdocs.org/incident/19820717030519A), Jul 17, 1982: Piper PA22, Mcgrath, AK, Substantial damage. Crashed occurred during emergency landing on gravel bar after engine lost power.

## Other investigations on N891A (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 IAD70D0055](https://openairdocs.org/ntsb/IAD70D0055), Aug 30, 1969: Piper PA-22 (N891A), Advance, NC, substantial damage

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.

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