Tuesday, October 17, 2017

Schweizer Aircraft Corp. G-164B, N7502Y, Ken Spray LLC: Incident occurred September 14, 2017 in Twin Falls, Idaho

Federal Aviation Administration / Flight Standards District Office; Boise, Idaho

Aircraft on takeoff from a field, struck a powerline.

Ken Spray LLC: http://registry.faa.gov/N7502Y

Date: 14-SEP-17
Time: 19:00:00Z
Regis#: N7502Y
Aircraft Make: SCHWEIZER
Aircraft Model: G164
Event Type: INCIDENT
Highest Injury: NONE
Aircraft Missing: No
Damage: MINOR
Activity: AERIAL APPLICATION
Flight Phase: TAKEOFF (TOF)
City: TWIN FALLS
State: IDAHO

Aviation Accident Final Report - National Transportation Safety Board:  https://app.ntsb.gov/pdf

Investigation Docket  - National Transportation Safety Board: https://dms.ntsb.gov/pubdms


Aviation Accident Data Summary - National Transportation Safety Board:  https://app.ntsb.gov/pdf

NTSB Identification: WPR10CA444
14 CFR Part 137: Agricultural
Accident occurred Thursday, September 02, 2010 in Murtaugh, ID
Probable Cause Approval Date: 03/16/2011
Aircraft: SCHWEIZER AIRCRAFT CORP 164B, registration: N7502Y
Injuries: 1 Minor.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot reported that during landing he noticed the wind intensity was increasing at the private airstrip. He departed again for his fifth aerial application flight of the day. While on the takeoff, as the tail was lifting off the ground, a gust of wind struck the airplane and it veered towards the right. The airplane exited the runway surface and struck a power pole, substantially damaging the wings, fuselage and empennage. The nearest weather reporting station, located about 13 miles from the accident airstrip, reported wind at 13 knots gusting to 19 knots. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot’s inadequate compensation for the wind and failure to maintain directional control during the takeoff roll.


The pilot reported that he noticed the wind was picking up at the private airstrip when he landed from his fourth load of spray for the aerial application flight. During the takeoff roll of the pilot’s fifth load, as the tail was coming off the ground, a gust of wind struck the airplane and it veered towards the right. The airplane exited the runway environment and struck a power pole, substantially damaging the wings, fuselage and empennage. The nearest weather reporting station located about 13 miles to the west of the accident airstrip reported wind from 070 degrees at 13 knots gusting to 19 knots. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident.

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf


Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

NTSB Identification: SEA04LA125
The docket is stored in the Docket Management System (DMS). Please contact Records Management Division
Accident occurred Wednesday, July 07, 2004 in Wendell, ID
Probable Cause Approval Date: 10/28/2004
Aircraft: Schweizer Aircraft Corp. G-164B, registration: N7502Y
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot reported that he had completed fertilizing one field and was proceeding to a second field at about 300 feet above ground level when the engine started running rough. The pilot increased mixture to full rich and checked the magnetos, however, the engine lost all power. The pilot maneuvered the aircraft to a corn field. During the landing roll, the aircraft nosed over and came to rest inverted. During an inspection of the engine, one of the cylinders displayed a crack around the cylinder head.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
A cracked cylinder head which resulted in a loss of engine power while maneuvering. High vegetation was a factor.

On July 7, 2004, at 1110 mountain daylight time, a Schweizer Aircraft Corp. G-164B, N7502Y, registered to and operated by Ken Spray LLC, as a 14 CFR Part 137 aerial application flight, experienced a loss of engine power and subsequently nosed over during the landing roll in a corn field located about five miles south of Wendell, Idaho. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft was substantially damaged and the commercial pilot, the sole occupant, was not injured. The flight originated from a private airstrip near Jerome, Idaho, about 40 minutes prior to the accident.

The pilot reported that he had completed fertilizing one field and was proceeding to a second field at about 300 feet above ground level when the engine started running rough. The pilot increased mixture to full rich and checked the magnetos, however, the engine lost all power. The pilot maneuvered the aircraft to a corn field. During the landing roll, the aircraft nosed over and came to rest inverted.

During an inspection of the engine by a Federal Aviation Administration Inspector from the Boise, Idaho, Flight Standards District Office, the inspector reported that one of the cylinders displayed a crack around the cylinder head.

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