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Accident description
Last updated: 13 December 2017
Status:Final
Date:Tuesday 11 July 1967
Time:11:04
Type:Silhouette image of generic G159 model; specific model in this crash may look slightly different
Grumman G-159 Gulfstream I
Operator:Honeywell Inc.
Registration: N861H
C/n / msn: 147
First flight: 1964
Total airframe hrs:1937
Engines: 2 Rolls-Royce Dart 529-8X
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 2 / Occupants: 2
Airplane damage: Damaged beyond repair
Location:8 km (5 mls) SE of Le Center, MN (   United States of America)
Phase: En route (ENR)
Nature:Training
Departure airport:Minneapolis-St. Paul International Airport, MN (MSP/KMSP), United States of America
Destination airport:Minneapolis-St. Paul International Airport, MN (MSP/KMSP), United States of America
Narrative:
The Gulfstream departed Minneapolis at 10:34 CDT for a company pilot training flight in clear weather. An engine fire forced the crew to request emergency radar vectors for Le Center. The no. 2 engine was seen emitting smoke and flames, followed by an explosion in the engine. The aircraft lost control and crashed in flames into a bean field, striking the ground right wing down and disintegrating along a northwest ground path, 1,220 feet long and 264 feet wide.

Probable Cause:

PROBABLE CAUSE: "Overtemperaturing of both engines, in-flight fire and explosion caused by the 'Z' relay in the propeller automatic cruise pitch retraction system."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year
Accident number: NTSB/AAR-68-AA
Download report: Final report


Follow-up / safety actions

NTSB issued 2 Safety Recommendations

Show all AD's and Safety Recommendations

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This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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