Accident
Last updated: 25 October 2014
Statuts:Enquête Officielle
Date:mardi 5 mars 1974
Heure:11:10
Type/Sous-type:NAMC YS-11A-202
Compagnie:Pacific Southwest Airlines - PSA
Immatriculation: N208PA
Numéro de série: 2082
Année de Fabrication: 1968
Equipage:victimes: 0 / à bord: 4
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 4
Dégats de l'appareil: Perte Totale
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:14 km (8.8 milles) E of Borrego Springs, CA (   Etats-Unis d'Amérique)
Phase de vol: En cours de manoeuvre (MNV)
Nature:Entrainement
Aéroport de départ:San Diego (unknown airport), CA, Etats-Unis d'Amérique
Aéroport de destination:San Diego (unknown airport), CA, Etats-Unis d'Amérique
Détails:
A high-stop (cruise pitch) hang-up of both propellers at low airspeed (while the aircraft was entering a stall maneuvered) caused excessive temperatures in the turbine sections of both engines. When the training crew tried to recover from the simulated landing stall, the engines didn't respond. The aircraft crash-landed in the desert. Excessive wear of the propeller hub contact switches was due to maintenance instruction deficiencies. Contributing was the crew non-adherence to prescribed procedures.

PROBABLE CAUSE:
personnel - maintenance,servicing,inspection: inadequate maintenance and inspection
powerplant - propeller system: other
dual student - improper operation of powerplant & powerplant controls
pilot in command - inadequate supervision of flight
FACTORS:
miscellaneous acts,conditions - failure of two or more engines
miscellaneous acts,conditions - excessive temperature
miscellaneous acts,conditions - fire in engine
miscellaneous acts,conditions - intentional wheels-up
partial power loss - partial loss of power - 1 engine
complete power loss - complete engine failure/flameout-1 engine

Sources:
» NTSB


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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 tels qui sont connus à ce jour.
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