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Accident
Last updated: 19 October 2017
Statuts:Enquête Officielle
Date:mercredi 14 avril 1976
Heure:16:25
Type/Sous-type:Silhouette image of generic A748 model; specific model in this crash may look slightly different
Avro 748-105 Srs. 1
Compagnie:Yacimientos Petroliferos Fiscales
Immatriculation: LV-HHB
Numéro de série: 1540
Année de Fabrication: 1962
Heures de vol:25753
Cycles:24130
Moteurs: 2 Rolls-Royce Dart 514
Equipage:victimes: 3 / à bord: 3
Passagers:victimes: 31 / à bord: 31
Total:victimes: 34 / à bord: 34
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:35 km (21.9 milles) N of Cutral-Có , NE (   Argentine)
Phase de vol: En vol (ENR)
Nature:Charter National
Aéroport de départ:Rincón de Los Sauces Airport, NE (RDS/SAHS), Argentine
Aéroport de destination:Cutral Airport, NE (CUT/SAZW), Argentine
Détails:
The Avro 748 aircraft, named "Ciudad de Corrientes", was making a staff-transfer flight for the Yacimientos Petroliferos Fiscales (YPF) State Enterprise. It began in Cutral-Có at 14:00 and the aircraft landed 40 minutes later on a Company landing strip in Rincón de Los Sauces. The aircraft took off at 15:55 for Cutral-Có again with 31 passengers and 3 crew.
At 16:23 the crew contacted Cutral-Có and asked for information on the local state of the weather and estimated landing at 16:33. At an altitude of about 4000 feet the starboard wing failed, followed by separation of the starboard tailplane. The remainder of the plane corkscrewed and crashed.

Probable Cause:

PROBABLE CAUSE; "The accident was the result of detachment of the right hand wing in normal flight, through structural failure of the wing in the area between stringers 3 and 12 and in the area of the engine outer rib.
Within the area indicated, one may identify among the origins of the fatigue the reinforcing plate, and especially, the holes in it for rivets.
The cause of these fatigue cracks, since the material of which they were made was satisfactory, must be attributed to stress concentration in the area concerned due to geometry of the design, these cracks becoming critical sooner than had been estimated. The cracks remained undetected and became critical because the manufacturer's inspection programme for the area concerned was insufficiently precise and made it possible for the operator not to detect and correct them in time."

Accident investigation:
cover
Investigating agency: AIB
Status: Investigation completed
Accident number: AAR 11/1977
Download report: Final report

Sources:
» Flight International 11.03.1978 (680)
» The Avro 748 with Aerolineas Argentinas, by Carlos Abella


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Rincón de Los Sauces Airport, NE et Cutral Airport, NE est de 175 km (109 miles).
Accident location: Approximate; accuracy within a few kilometers.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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