Piper PA-22 N891A

Summary

On 17 July 1982 at about 06:30 local time, a Piper PA-22 registered N891A, operated by Paul Moore & Dave Armstrong, was involved in an accident near 65 Mi.ene of Mc, Alaska, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

17 July 1982 at 06:30

Classification

Accident

Location

65 Mi.ene of Mc, Alaska, United States

Coordinates

Not recorded

Aircraft

Piper PA-22

Registration

N891A

Category

Airplane

Engines

1

Operator

Paul Moore & Dave Armstrong

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Willow → Nikoli

Aircraft damage

Substantial

Weather

VMC

Light

Dusk

NTSB number

ANC82DA060

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.