Beechcraft C23 N9310S

Summary

On 7 August 1995 at about 23:20 local time, a Beechcraft C23 registered N9310S, operated by James D. Gregory, was involved in an accident near Dublin, New Hampshire, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

7 August 1995 at 23:20

Classification

Accident

Location

Dublin, New Hampshire, United States

Coordinates

Not recorded

Aircraft

Beechcraft C23

Registration

N9310S

Category

Airplane

Engines

1

Operator

James D. Gregory

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Beverly → Keene

Aircraft damage

Substantial

Weather

VMC

Light

Dusk

NTSB number

NYC95LA183

Nobody was injured.

THE LOSS OF ENGINE POWER DUE TO IMPROPER MAJOR OVERHAUL OF THE ENGINE BY THE REUSE OF WORN PISTON PINS. THE ROUGH/ UNEVEN TERRAIN IN THE EMERGENCY LANDING AREA WAS A FACTOR.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

THE PILOT WAS CRUISING AT 4500 FEET WHEN HE OBSERVED A LOW OIL PRESSURE INDICATION FOLLOWED BY A TOTAL LOSS OF ENGINE POWER. THE PILOT PERFORMED A FORCED LANDING ON AN OPEN FIELD, DURING WHICH THE NOSE GEAR COLLAPSED, AND THE FIREWALL BUCKLED. THE FAA INSPECTOR STATED THAT ALL PISTON PINS WERE REUSED AT LAST OVERHAUL, 121 HOURS PRIOR TO THE ACCIDENT. DURING POSTACCIDENT EXAMINATION, ALL PISTON PINS WERE FOUND TO BE BELOW SERVICE LIMITS. ADDITIONALLY, '...THE ENGINE FAILURE RESULTED FROM METAL PARTICLES GENERATED BY THE LOOSE FITTING PISTON PIN PLUGS, CAUSING PROGRESSIVE CONTAMINATION OF THE ENGINE LUBRICATION SYSTEM.'

Quoted verbatim from the NTSB record.