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Accident
Last updated: 22 October 2017
Status:Schlussbericht
Datum:Freitag 23 Juni 1967
Zeit:14:47
Flugzeugtyp:Silhouette image of generic BA11 model; specific model in this crash may look slightly different
BAC One-Eleven 204AF
Fluggesellschaft:Mohawk Airlines
Kennzeichen: N1116J
Werknummer: 098
Baujahr: 1966
Betriebsstunden:2246
Triebwerk: 2 Rolls-Royce Spey 506-14
Besatzung:Todesopfer: 4 / Insassen: 4
Fluggäste:Todesopfer: 30 / Insassen: 30
Gesamt:Todesopfer: 34 / Insassen: 34
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:1,6 km (1 Meilen) E of Blossburg, PA (   USA)
Flugphase: Während des Fluges (ENR)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Elmira Regional Airport, NY (ELM/KELM), USA
Flug nach:Washington-National Airport, DC (DCA/KDCA), USA
Flugnummer: 40
Unfallbericht:
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:

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."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 300 days (10 months)
Accident number: NTSB File No.1-0004
Download report: Final report


Sicherheitsempfehlungen

FAA issued 1 Airworthiness Directive
NTSB issued 3 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).
Accident location: Exact; as reported in the official accident report.

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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BAC One-Eleven

  • 245 built
  • 4th loss
  • 3rd Fataler Unfall
  • 2nd worst accident (Zu diesem Zeitpunkt)
  • 5th worst accident (Momentan)
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