Cessna 188A N2133U

Summary

On 20 June 2005 at about 15:30 local time, a Cessna 188A registered N2133U was involved in an accident near Fairview, Montana, 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

20 June 2005 at 15:30

Classification

Accident

Location

Fairview, Montana, United States

Coordinates

47.8639, -104.6331

Aircraft

Cessna 188A

Registration

N2133U

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Route

Fairview → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA05LA121

1 person had minor injuries.

While in cruise flight a separation of a propeller blade as a result of a propeller hub crack. Factors contributing to the accident included the installation of an unapproved propeller, and the failure to properly service the propeller with red dyed oil for crack protection.

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

Read the full NTSB narrative

While en route at approximately 100 feet above the ground during an aerial application operation, one of the airplane's two propeller blades separated from the propeller hub. Subsequently, the remaining propeller blade and hub separated from the airplane, culminating with the pilot making a forced landing to an open field. Examination of the propeller assembly revealed that the propeller blade model was the correct blade for the propeller; however, the propeller model was not approved for the Cessna 188A with a TCM IO-520 engine. It was also revealed that the propeller should have been filled with red dyed oil for crack detection. A visual inspection of the aircraft revealed no evidence of red dyed oil on the surface of either propeller blade or the propeller hub. A further inspection of the separated propeller blade indicated that the failure occurred within the outboard blade retention threads.

Quoted verbatim from the NTSB record.