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Accident description
Last updated: 18 October 2017
Status:Final
Date:Wednesday 18 May 1966
Time:17:40
Type:Silhouette image of generic DC7 model; specific model in this crash may look slightly different
Douglas DC-7
Operator:United Airlines
Registration: N6339C
C/n / msn: 45153/822
First flight: 1957
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 4
Airplane damage: Damaged beyond repair
Location:Denver-Stapleton International Airport, CO (DEN) (   United States of America)
Phase: Landing (LDG)
Nature:Training
Departure airport:?
Destination airport:Denver-Stapleton International Airport, CO (DEN/KDEN), United States of America
Narrative:
On landing the nose wheel tire recap separated, striking and disconnecting the nose gear torque link pins. The landing gear leg then collapsed. The DC-7 named "Mainliner Capt. Ralph Johnston" was consequently sold to Barter Machinery & Supply and broken up.

Probable Cause:

PROBABLE CAUSE(S)
airframe - landing gear: nosewheel assemblies
airframe - landing gear: wheels,tires,axles
miscellaneous acts, conditions - material failure
FACTOR(S)
miscellaneous acts, conditions - vibration, excessive

Sources:
» NTSB file # 1-0038


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