Remarks:
The aircraft lost control on final approach and crashed in a nose-down attitude.
PROBABLE CAUSE: "The failure of the beta blocking device for undetermined reason(s), and the second-pilot's inadvertent activation of the power lever, or levers, aft of the flight idle position and into the beta range, resulting in a loss of airplane control."
 

Source: (also check out sources used for every accident)
S157; ICAO Adrep Summary 1/95; NTSB
 

[disclaimer]

Remarks:
The crash occurred shortly before as the plane was preparing to land at Patuxent River Naval Air Station. The crew had been conducting tests of tracking equipment during the short flight from Davison Army Air Field at Fort Belvoir. The plane crashed sank into the water about 50 yards off shore from the Naval Air Station, in 45ft deep water. Reportedly, this aircraft crashed because the flight crew inadvertently selected "beta range" on the propellers at 800 feet. The aircraft then stalled and crashed into the river. The CASA aircraft was owned by the US Army Intelligence and Security Command (INSCOM) and carried both a military (88-0320) as well as civilian (N296CA) registration marks.
 

Source: (also check out sources used for every accident)
Scramble 11:7 (p.34)
Post-Vietnam ERA systems site
 

[legenda] [disclaimer]

Remarks:
At 14.30 the flight was cleared for a runway 21R visual approach and was cleared to land one minute later, At a height of 60-70ft the aircraft suddenly yawed violently to the left and banked left 80-90 degrees in a descent. The aircraft then rolled right and struck the ramp area 1010ft inside and to the left of the runway 21R threshold. It then skidded 398ft, struck three ground support vehicles in front of Gate F10 at Concourse F and caught fire.
PROBABLE CAUSE: "The captain's inability to control the airplane in an attempt to recover from an asymmetric power condition at low speed following his intentional use of the beta mode of propeller operation to descend and slow the airplane rapidly on final approach for landing. Factors that contributed to the accident were an unstabilized visual approach, the presence of a departing DC-9 on the runway, the desire to make a short field landing, and the higher-than-normal flight idle fuel flow settings of both engines. The lack of fire-blocking material in passenger seat cushions contributed to the severity of the injuries."
 

Source: (also check out sources used for every accident)
NTSB/AAR-88/08; AL245
 

[legenda] [disclaimer]