Accident description
Last updated: 23 November 2014
Status:Final
Date:Saturday 20 July 1996
Time:15:06
Type:Silhouette image of generic DC6 model; specific model in this crash may look slightly different
Douglas DC-6A
Operator:Northern Air Cargo
Registration: N313RS
C/n / msn: 44663/630
First flight: 1955
Total airframe hrs:38248
Engines: 4 Pratt & Whitney R-2800-CB3
Crew:Fatalities: 3 / Occupants: 3
Passengers:Fatalities: 1 / Occupants: 1
Total:Fatalities: 4 / Occupants: 4
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:Russian Mission, AK (RSH) (   United States of America) show on map
Phase: Approach (APR)
Nature:Cargo
Departure airport:Emmonak Airport, AK (EMK), United States of America
Destination airport:Aniak Airport, AK (ANI), United States of America
Flightnumber: 33
Narrative:
The DC-6 cargo plane departed Emmonak at 14:10 for a flight to Aniak. At 14:55 the no. 3 engine caught fire and the fire handles were pulled. The captain then ordered the propeller the be feathered. At 14:57 the first officer confirms that number 3 actually feathered, but said they were still indicating a fire. The captain then decided to carry out an emergency landing at Holy Cross. While the captain was preparing the airplane for landing the first officer stated that the fire is starting to go out. METO power was applied and the captain remarked that if the fire is out he would rather not land at Holy Cross. The fire warning bell sounded again at 14:59 and smoke began entering the cockpit. An approach was made to Russian Mission and the aircraft passed over the airport at 300-400 feet and was later seen turning to finals when the right wing folded upward. The aircraft rolled to the right and nosed down into the ground, short of runway 35.

PROBABLE CAUSE: "Fatigue failure of the master connecting rod, which originated from corrosion pitting, subsequently compromised the engine crankcase, and resulted in a fire; and failure of the flight crew to follow emergency procedures by pulling the fire handle before feathering the propeller, which diminished the effectiveness of the fire suppression system. "

Classification:
Loss of control

Sources:
» ICAO Adrep Summary 5/96 (#46)
» NTSB ANC96FA102
» Scramble 210


Photos

photo of Douglas DC-6A N313RS
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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Emmonak Airport, AK to Aniak Airport, AK as the crow flies is 287 km (180 miles).

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