Interplane SKYBOY EX N582YB

Summary

On 28 July 2012 at about 01:30 local time, a Interplane SKYBOY EX registered N582YB, operated by Jason Emonds, was involved in an accident near Sandy, Oregon, 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

28 July 2012 at 01:30

Classification

Accident

Location

Sandy, Oregon, United States

Nearest airport

Sandy River (03S)

Coordinates

45.3791, -122.2297

Aircraft

Interplane SKYBOY EX

Registration

N582YB

Category

Airplane

Year built

2001

Engines

1

Operator

Jason Emonds

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Sandy → Sandy

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

WPR12LA329

Nobody was injured.

A partial loss of engine power during takeoff due to carburetor icing. Contributing to the accident was the lack of a carburetor heat system installed on the airplane.

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

Read the full NTSB narrative

The pilot had been flying the airplane for about 1 hour before the accident.  He landed, shut down the engine, boarded new passengers, and restarted the engine. The total time from shut down to start up was about 5 minutes. He stated that the airplane's engine performed normally during run-up and takeoff. After takeoff, about 300 to 400 feet above ground level, the engine began to lose power. The pilot made a hard right turn and landed in an open field. The airplane impacted a fence post with its right wing during the landing roll. An engine examination revealed that the engine did not have a carburetor heat system installed. The subsequent engine test run on the airframe confirmed that a partial loss of engine power occurred after about 1.5 minutes of operation. The temperature, dew point, and relative humidity were nearly identical during the engine test run and the accident event. A carburetor icing chart indicated the possibility of serious carburetor icing at cruise power at the reported atmospheric conditions. The engine was removed from the airframe, examined, and tested at an engine tech services facility. During the engine test run the engine performed at various power levels for 28 minutes without degraded power output. The atmospheric conditions during this test were significantly different than the conditions at the time of the accident. The engine inspection concluded that there were no anomalies that would have precluded normal operation.

Quoted verbatim from the NTSB record.