Cessna 206 N756CL

Summary

On 7 June 2024 at about 23:05 local time, a Cessna 206 registered N756CL, operated by Egli Air Haul Service, was involved in an accident near King Salmon, Alaska, 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

7 June 2024 at 23:05

Classification

Accident

Location

King Salmon, Alaska, United States

Coordinates

58.6772, -156.6518

Aircraft

Cessna 206

Registration

N756CL

Category

Airplane

Year built

1977

Engines

1

Operator

Egli Air Haul Service

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

King Salmon → Igiugig

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ANC24LA045

Nobody was injured.

A partial loss of engine power due to detonation/preignition of the No. 1 cylinder for reasons that could not be determined.

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

Read the full NTSB narrative

The pilot reported that, shortly after takeoff, he observed high engine oil temperature and began to turn back to the airport. The engine began losing power, and the pilot performed a forced landing in the tundra, which resulted in substantial damage to the horizontal stabilizer and elevator. Examination of the engine revealed that the No. 1 piston was eroded down to the steel ring lands and scuff marks were observed on the side of the piston skirt. The No. 1 cylinder upper and lower spark plugs had molten aluminum deposits covering the electrodes and insulators. The crankshaft rod journals exhibited evidence of foreign material contamination in the oil. The Nos. 2 and 5 crankshaft rod journals had severe thermal discoloration. All connecting rod bearings exhibited abnormal wear. Connecting rod bearings No. 2 and 5 were severely damaged. The observed damage was consistent with a detonation/pre-ignition event; however, the reasons for the detonation/pre-ignition could not be determined based on the available information.

Quoted verbatim from the NTSB record.