Statuts:	Enquête Officielle
Date:	09 SEP 1969
Heure:	15:29 EDT
Type/Sous-type:	McDonnell Douglas DC-9-31
Compagnie:	Allegheny Airlines
Immatriculation:	N988VJ
Numéro de série:	47211/357
Année de Fabrication:	1968
Heures de vol:	3170
Moteurs:	2 Pratt & Whitney JT8D-7
Equipage:	victimes: 4 / à bord: 4
Passagers:	victimes: 78 / à bord: 78
Total:	victimes: 82 / à bord: 82
Victime de la collision:	victimes: 1
Dégats de l'appareil:	Perte Totale
Conséquences:	Written off (damaged beyond repair)
Lieu de l'accident:	Shelbyville, IN (Etats-Unis d'Amérique)
Phase de vol:	En vol (ENR)
Nature:	Transport de Passagers Nat.
Aéroport de départ:	Cincinnati/Northern Kentucky Airport, KY (CVG/KCVG), Etats-Unis d'Amérique
Aéroport de destination:	Indianapolis-Weir Cook Municipal Airport, IN (IND/KIND), Etats-Unis d'Amérique
Numéro de vol:	853

Détails:
Flight 853 was descending from 6000 feet to 2500 feet when, at about 3550 feet, it collided with a Piper PA-28 aircraft (N7374J). The Piper was flown by a student pilot on a solo cross-country VFR flight. Visibility was 15 miles with intervening clouds.

PROBABLE CAUSE: "The deficiencies in the collision avoidance capability of the Air Traffic Control (ATC) system of the Federal Aviation Administration in a terminal area wherein there was mixed Instrument Flight Rules (IFR) and Visual Flight Rules (VFR) traffic. The deficiencies included the inadequacy of the see-and-avoid concept under the circumstances of this case; the technical limitations of radar in detecting all aircraft; and the absence of Federal Aviation Regulations which would provide a system of adequate separation of mixed VFR and IFR traffic in terminal areas."

Sources:
» NTSB-AAR-70-15