Accident description
Last updated: 24 October 2014
Status:Final
Date:Friday 23 June 1967
Time:14:47
Type:BAC One-Eleven 204AF
Operator:Mohawk Airlines
Registration: N1116J
C/n / msn: 098
First flight: 1966
Total airframe hrs:2246
Engines: 2 Rolls-Royce Spey 506-14
Crew:Fatalities: 4 / Occupants: 4
Passengers:Fatalities: 30 / Occupants: 30
Total:Fatalities: 34 / Occupants: 34
Airplane damage: Destroyed
Airplane fate: Written off (damaged beyond repair)
Location:1,6 km (1 mls) E of Blossburg, PA (   United States of America) show on map
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Elmira Regional Airport, NY (ELM/KELM), United States of America
Destination airport:Washington-National Airport, DC (DCA/KDCA), United States of America
Flightnumber: 40
Narrative:
Mohawk Flight 40 took off from Elmira at 14:39 EDT for a flight to Washington, DC. At 14:44 the aircraft was cleared to climb to FL160. Eyewitnesses observed the aircraft a little later near Blossburg when large sections of the tail separated from the aircraft in flight, after which fire and smoke emitted from the tail as the aircraft dove into the ground.

PROBABLE CAUSE: "The loss of integrity of empennage pitch control systems due to a destructive in-flight fire which originated in the airframe plenum chamber, fueled by hydraulic fluid, progressed up into the vertical tail fin. The fire resulted from engine bleed air flowing back through the malfunctioning nonreturn valve and an open air delivery valve, through the auxiliary power unit in a reverse direction, and exiting into the plenum chamber at temperatures sufficiently high to cause the acoustics linings to ignite."

Classification:

Wing failure
Loss of control

Sources:

Official accident investigation report
investigating agency: National Transport Safety Bureau (NTSB) - United States of America
report status: Final
report number: NTSB File No.1-0004
report released:18-APR-1968
duration of investigation:300 days (10 months)
download report: Mohawk Airlines, Inc., BAC 1-11, N1116J, near Blossburg, Pennsylvania, June 23, 1967 (NTSB File No.1-0004)

Follow-up / safety actions

FAA issued 1 Airworthiness Directive
NTSB issued 3 Safety Recommendations

Show all AD's and Safety Recommendations

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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 Elmira Regional Airport, NY to Washington-National Airport, DC as the crow flies is 365 km (228 miles).

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BAC One-Eleven

  • 4th loss
  • 245 built
  • 2nd worst accident (at the time)
  • 5th worst accident (currently)
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 United States of America
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