Commonwealth 185 N92997

Summary

On 28 June 1998 at about 19:30 local time, a Commonwealth 185 registered N92997 was involved in an accident near Oregon, Wisconsin, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

28 June 1998 at 19:30

Classification

Accident

Location

Oregon, Wisconsin, United States

Coordinates

42.9190, -89.3810

Aircraft

Commonwealth 185

Registration

N92997

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CHI98LA227

1 person had minor injuries.

the improper adjustment of the carburetor by an unqualified person. Factors to the accident were the annual inspection not being complied with and the lack of recent experience of the pilot.

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

Read the full NTSB narrative

The FAA inspector stated that the aircraft lost power soon after takeoff from the private airstrip. Post accident investigation showed that the aircraft was using auto-gas. There was no Supplemental Type Certificate (STC) found to be issued by the FAA for the use of auto-gas for the aircraft in question. Approximately 1/4 cup of oil was drained from the number two cylinder. The lower spark plug of the number two cylinder was oil fouled. The number one cylinder upper spark plug lead fell apart when removed from the cylinder. The right magneto did not produce a spark when a functional test was conducted. The pilot had stated that on the day of the accident he had noticed that the carburetor of his aircraft was running 'Over.' The pilot stated that he readjusted the carburetor to specifications. The most recent annual inspection was completed on October 10, 1996. The last 90-day student solo sign off was in October of 1997. According to the pilot's written statement there was no record of flying for at least 90 days prior to the date of the accident.

Quoted verbatim from the NTSB record.