ASN Aircraft accident NAMC YS-11A-202 N208PA Borrego Springs, CA
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Status:Accident investigation report completed and information captured
Date:Tuesday 5 March 1974
Time:11:10
Type:Silhouette image of generic YS11 model; specific model in this crash may look slightly different
NAMC YS-11A-202
Operator:Pacific Southwest Airlines - PSA
Registration: N208PA
MSN: 2082
First flight: 1968
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 0 / Occupants: 0
Total:Fatalities: 0 / Occupants: 4
Aircraft damage: Damaged beyond repair
Location:14 km (8.8 mls) E of Borrego Springs, CA (   United States of America)
Phase: Maneuvering (MNV)
Nature:Training
Departure airport:San Diego (unknown airport), CA, United States of America
Destination airport:San Diego (unknown airport), CA, United States of America
Narrative:
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:

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


Photos

photo of NAMC-YS-11A-202-N208PA
accident date: 05-03-1974
type: NAMC YS-11A-202
registration: N208PA
 
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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