Cessna 182N N92252

Summary

On 20 August 1986 at about 04:51 local time, a Cessna 182N registered N92252 was involved in an accident near Wilmington, California, United States. 2 people were on board and 2 were seriously injured. The aircraft was destroyed. No probable cause statement is available for this record.

Date

20 August 1986 at 04:51

Classification

Accident

Location

Wilmington, California, United States

Coordinates

33.7705, -118.2603

Aircraft

Cessna 182N

Registration

N92252

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Route

Fullerton → Long Beach

Aircraft damage

Destroyed

Weather

VMC

Light

Night/Bright

NTSB number

LAX86FA326

2 people were seriously 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 A LOCAL NIGHT INSTRUCTIONAL FLT THE PLTS REPORTED THAT THE ENG BEGAN TO RUN VERY ROUGH AND EVENTUALLY QUIT WHEN POWER WAS REDUCED SLIGHTLY TO BEGIN THE DESCENT FOR THE DESTINATION ARPT. THE ACFT STRUCK POWER LINES, TWO SMALL BUILDINGS AND A BRICK WALL DURING THE NIGHT FORCED LANDING IN AN INDUSTRIAL AREA. EXAMINATION OF THE ENG REVEALED THAT THE NUMBER ONE CYLINDER EXHAUST VALVE ROCKER ARM SHAFT BOSS JOURNAL HAD FAILED. TESTS OF AN IDENTICAL ENG DUPLICATING THE BOSS JOURNAL FAILURE IN A TEST CELL REPLICATED THE ENG POWER LOSS AS DESCRIBED BY THE CREW. THE CYLINDER HAD BEEN CHANGED 27 HOURS PRIOR TO THE ACCIDENT. EVIDENCE INDICATED THAT THE ROCKER ARM SHAFT KEEPER BOLT HAD BEEN OVER TORQUED DURING THE OVERHAUL.

Quoted verbatim from the NTSB record.