Cessna 150K N6377G

Summary

On 29 July 1998 at about 02:53 local time, a Cessna 150K registered N6377G was involved in an accident near Yorba Linda, California, United States. 2 people were 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

29 July 1998 at 02:53

Classification

Accident

Location

Yorba Linda, California, United States

Coordinates

Not recorded

Aircraft

Cessna 150K

Registration

N6377G

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Route

Fullerton → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

LAX98LA247

Nobody was injured.

An oil starvation failure of the engine due to the mechanic's inadequate maintenance installation and quality control procedures, which resulted in a shop rag being inadvertently left inside the accessory case when the starter was changed 7 hours prior to the accident.

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

Read the full NTSB narrative

The student was descending toward the destination airport when the engine began to run rough, then it quit altogether. The CFI took over and attempts to remedy the engine power loss were unsuccessful. During the subsequent forced landing on a city street, the aircraft collided with ground obstructions. Disassembly and examination of the engine revealed a shop rag inside the accessory case in the upper right quadrant just under the starter motor cover plate and entwined in the accessory gears. The oil suction screen was collapsed and heavily contaminated with cloth and lint fragments. The oil sump suction tube inlet was found completely plugged by rag fragments. Typical oil starvation failure signatures were noted to the internal crankshaft pins, rod ends, and bearings. The last entry in the engine logbook was dated July 16, 1998, 7 hours prior to the accident, and listed the removal and replacement of the starter.

Quoted verbatim from the NTSB record.