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December 1999
Business
Jet Overruns Wet Runway After Landing Past Touchdown Zone 6 pages. [PDF 66K]
Recorded radar data showed groundspeeds of more
than 160 knots when the Cessna Citation 500 was on final approach.
The aircraft struck a navigational-aid-support structure, terrain
and two mobile homes off the departure end of the runway. The three
occupants were injured during the impact, but they exited the aircraft
before it was destroyed by fire.
November 1999
Unaware
of Strong Crosswind, Fokker Crew Loses Control of Aircraft on Landing
6 pages. [PDF 62K]
During approach to Guernsey, United Kingdom, the
pilots of the Fokker F27 received a report containing an average
of wind-speed values recorded over a two-minute period. They did
not request a report of instantaneous wind speed. Thus, the pilots
did not know that sudden, strong gusts exceeded the crosswind limit
in the company operations manual. The aircraft touched down about
mid-field, according to witnesses, then overran the end of the runway,
veered left and struck an embankment.
October 1999
Erroneous
Airspeed Indications Cited in Boeing 757 Control Loss 8 pages. [PDF 69K]
Investigators concluded that the airplane had a
blocked pitot tube and that, during departure, the flight crew became
confused by false indications of increasing airspeed and did not
respond to a stall warning. All the occupants were killed when the
airplane struck the Caribbean Sea off the northern coast of the
Dominican Republic.
September 1999
Rudder
Malfunction Causes Loss of Control of Boeing 737 16 pages. [PDF 208K]
All 132 occupants were killed when the airplane
struck terrain near Pittsburgh, Pennsylvania, U.S. The investigation
report said that, following an encounter with wake turbulence, the
airplane’s rudder moved to the limit of its travel, in a direction
opposite to that commanded by the flight crew. The report said that
the rudder-control anomaly most likely was caused by a malfunction
of the rudder’s main power control unit.
August 1999
Double
Engine Failure Leads to Ditching of Cessna 402C 6 pages. [PDF 52K]
The investigation concluded that fuel exhaustion
might have caused both engines to fail while the airplane was on
a scheduled flight in New Zealand. Five of the 10 occupants were
rescued. Four occupants were unable to find their life jackets and
died before rescuers arrived. Another occupant was missing and presumed
dead.
July 1999
Airplane’s
Low-energy Condition and Degraded Wing Performance Cited in Unsuccessful
Go-around Attempt 12 pages. [PDF 118K]
The Canadair Regional Jet’s airspeed was
decreasing, and its engines were producing idle thrust when the
crew rejected the landing 33 feet (10 meters) above the runway.
The Transportation Safety Board of Canada said that there was insufficient
time for the engines to spool up to go-around thrust, and that a
thin accumulation of ice was a major factor in causing the airplane
to stall at a lower-than-normal stall angle-of-attack. The crew
lost control of the airplane, and the airplane struck the runway
and terrain.
June 1999
Learjet
Strikes Terrain When Crew Tracks False Glideslope Indication and
Continues Descent Below Published Decision Height 12 pages. [PDF 120K]
The U.S. National Transportation Safety Board said
that the flight crew did not follow standard operating procedures
while conducting an instrument landing system approach. The investigation
prompted the board to recommend acceleration of a proposed schedule
for requiring installation of terrain awareness and warning systems
in all turbine airplanes with six or more passenger seats.
May 1999
B-757
Damaged by Ground Strike During Late Go-around from Visual Approach
8 pages. [PDF 76K]
Deviations from standard operating procedures,
deficient crew resource management and crew distraction were cited
as factors in a controlled-flight-into-terrain accident that caused
substantial airplane damage but no injuries.
April 1999
Jammed
Elevator Prompts Twin-turboprop Rejected Takeoff, Runway Over-run
8 pages. [PDF 93K]
The investigating authority said that deficiencies
in the Hawker Siddeley 748 flight control gust-lock system might
have caused the elevator gust lock to re-engage when the flight
crew checked the flight controls at the beginning of the takeoff.
March 1999
Thin,
Rough Ice Accumulation Causes Twin-turboprop Aircraft Upset
12 pages. [PDF 82K]
The U.S. National Transportation Safety Board said
that the absence of adequate aircraft-certification standards and
operating procedures for flight in icing conditions was a probable
cause of the accident, and that the flight crew’s acceptance
of a relatively low airspeed restriction while operating in icing
conditions was a contributing factor.
February 1999
Ice
Ingestion Causes Both Engines to Flame Out During Air-taxi Turboprop’s
Final Approach 8 pages. [PDF 62K]
The accident was attributed to the flight crew’s
failure to comply with procedures requiring the use of continuous
engine ignition during and after an encounter with icing conditions.
January 1999
Attempted
Go-around with Deployed Thrust Reversers Leads to Learjet Accident
6 pages. [PDF 49K]
The pilot said that he rejected the landing when
the aircraft veered left after touchdown. He said that although
the thrust levers were positioned full forward, the aircraft did
not accelerate after lifting off the runway.