Cessna 208B N793FE

Summary

On 6 November 2012 at about 13:45 local time, a Cessna 208B registered N793FE, operated by Baron Aviation Services, Incorporated, was involved in an accident near Wichita, Kansas, United States. One person was on board and one died. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

6 November 2012 at 13:45

Classification

Accident

Location

Wichita, Kansas, United States

Nearest airport

Wichita Mid-Continent Airport (ICT)

Coordinates

37.6147, -97.4478

Aircraft

Cessna 208B

Registration

N793FE

Category

Airplane

Year built

1991

Engines

1

Operator

Baron Aviation Services, Incorporated

Operating rule

Part 135: Air Taxi & Commuter

Phase of flight

Not recorded

Route

Wichita → Garden City

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN13FA049

1 person died.

The total loss of engine power as a result of a fractured compressor turbine blade due to high-cycle fatigue.

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

Read the full NTSB narrative

According to air traffic control records, the pilot reported that the airplane had experienced a total loss of engine power during cruise climb about 4.5 minutes after the cargo flight's departure. After the loss of engine power, the pilot reported that his forward visibility was restricted by engine oil on the airplane's windshield. The pilot completed a forced landing to an open field, but the airplane impacted a hedgerow during the landing roll. A postaccident engine disassembly revealed a failure of the gas generator due to a compressor turbine blade separation. The fractured compressor turbine blade released into the engine gas flow path and subsequently impacted adjacent compressor turbine blades and downstream components, which caused the loss of engine power. A metallurgical examination established that the blade had failed in high-cycle fatigue that originated from the blade trailing edge. However, the root cause of the fatigue could not be determined due to secondary damage sustained to the fracture surface. All other mechanical damage to the engine was consistent with collateral damage sustained subsequent to the release of the compressor turbine blade. Engine oil was observed on the downstream side of the power turbine disk; any engine oil that entered the gas flow path at that location would have been discharged through the exhaust ducts and into the outside airstream, and this was likely the source of the engine oil observed on the exterior of the airframe. Recovered engine parameter data indicated normal engine operation until the sudden loss of power. Additional data analysis did not reveal any abnormal engine parameter trends.

Quoted verbatim from the NTSB record.