Accident
Last updated: 21 December 2014
Statuts:Enquête Officielle
Date:vendredi 23 juin 1967
Heure:14:47
Type/Sous-type:BAC One-Eleven 204AF
Compagnie:Mohawk Airlines
Immatriculation: N1116J
Numéro de série: 098
Année de Fabrication: 1966
Heures de vol:2246
Moteurs: 2 Rolls-Royce Spey 506-14
Equipage:victimes: 4 / à bord: 4
Passagers:victimes: 30 / à bord: 30
Total:victimes: 34 / à bord: 34
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:1,6 km (1 milles) E of Blossburg, PA (   Etats-Unis d'Amérique) show on map
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Elmira Regional Airport, NY (ELM/KELM), Etats-Unis d'Amérique
Aéroport de destination:Washington-National Airport, DC (DCA/KDCA), Etats-Unis d'Amérique
Numéro de vol: 40
Détails:
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."

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)

Opérations de secours

FAA issued 1 Airworthiness Directive
NTSB issued 3 Safety Recommendations

Show all AD's and Safety Recommendations

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Plan
Ce plan montre l'aéroport de départ ainsi que la supposé destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Elmira Regional Airport, NY et Washington-National Airport, DC est de 365 km (228 miles).

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