Incident Overview
Date: Saturday 7 September 1968
Aircraft Type: Chase YC-122C Avitruc
Owner/operator: Mobile Aircraft, Inc.
Registration Number: N122R
Location: off Golovin Airport, AK (GLV) –
ÿ United States of America
Phase of Flight: Take off
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 2
Component Affected: engine structureengine structure
Investigating Agency: NTSBNTSB
Category: Accident
A YC-122 cargo plane experienced a catastrophic engine failure during flight from Galena, Alaska to a DEW Line site. The right-hand engine cylinder failed, prompting a go-around and subsequent impact in the water. The pilot initiated a diversion to Golovin, Alaska, but a go-around was required. The aircraft stalled and impacted the water.A YC-122 cargo plane experienced a catastrophic engine failure during flight from Galena, Alaska to a DEW Line site. The right-hand engine cylinder failed, prompting a go-around and subsequent impact in the water. The pilot initiated a diversion to Golovin, Alaska, but a go-around was required. The aircraft stalled and impacted the water.
Description
The YC-122 cargo plane was engaged in transporting loads of cement from Galena, Alaska to a DEW Line site. While en route the no.1 cylinder of the right hand engine failed. The pilot diverted to Golovin, Alaska. However, a go around had to be executed. While manoeuvering the aircraft stalled and impacted the water. PROBABLE CAUSE: powerplant – engine structure: cylinder assembly miscellaneous acts,conditions – material failure pilot in command – failed to obtain/maintain flying speed FACTORS: pilot in command – misused or failed to use flaps miscellaneous acts,conditions – poorly planned approach miscellaneous acts,conditions – aircraft came to rest in water
Source of Information
https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=10925&key=0, http://www.john2031.com/chase/yc-122c_n122r/aircraft_photos.htmlhttps://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=10925&key=0, http://www.john2031.com/chase/yc-122c_n122r/aircraft_photos.htmlPrimary Cause
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