Crash of a Beechcraft 200 Super King Air in Salmon: 2 killed

Date & Time: Dec 10, 2007 at 0755 LT
Operator:
Registration:
N925TT
Survivors:
Yes
Schedule:
Salmon - Boise
MSN:
BB-746
YOM:
1981
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
14500
Captain / Total hours on type:
75.00
Aircraft flight hours:
10885
Circumstances:
The pilot removed the airplane from a hangar that was kept heated to about 60 degrees Fahrenheit, and parked it on the ramp while awaiting the arrival of the passengers. The outside temperature was below freezing, and a steady light to moderate snow was falling. The airplane sat in the aforementioned ambient conditions for at least 45 minutes before the initiation of the takeoff roll. Prior to attempting the takeoff, the pilot did not remove the accumulated snow or the snow that had melted on the warm airframe and then refroze as ice. The surviving passengers said that the takeoff ground run was longer than normal and the airplane lifted off at 100 knots indicated and momentarily touched back down, and then lifted off again. Almost immediately after it lifted off the second time, the airplane rolled into a steep right bank severe enough that the surviving passengers thought that the wing tip might contact the ground. As the pilot continued the takeoff initial climb, the airplane repeatedly rolled rapidly to a steep left and right bank angle several times and did not seem to be climbing. The airplane was also shuddering, and to the passengers it felt like it may have stalled or dropped. The pilot then lowered the nose and appeared to attain level flight. The pilot made a left turn of about 180 degrees to a downwind for the takeoff runway. During this turn the airplane reportedly again rolled to a steeper than normal bank angle, but the pilot successfully recovered. When the pilot initiated a left turn toward the end of the runway, the airplane again began to shake, shudder, and yaw, and started to rapidly lose altitude. Although the pilot appeared to push the throttles full forward soon after initiating the turn, the airplane began to sink at an excessive rate, and continued to do so until it struck a hangar approximately 1,300 feet southwest of the approach end of runway 35. No pre-impact mechanical malfunctions or failures were identified in examinations of the wreckage and engines.
Probable cause:
An in-flight loss of control due to the pilot's failure to remove ice and snow from the airplane prior to takeoff. Contributing to the accident were the pilot's improper preflight preparation/actions, falling snow, and a low ambient temperature.
Final Report:

Crash of a Beechcraft B200 Super King Air in Bogotá: 7 killed

Date & Time: Oct 11, 2007 at 2022 LT
Registration:
HK-4422
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Bogotá – Leticia
MSN:
BB-377
YOM:
1978
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
7
Captain / Total flying hours:
4088
Captain / Total hours on type:
324.00
Copilot / Total flying hours:
2127
Copilot / Total hours on type:
202
Aircraft flight hours:
10934
Circumstances:
The twin engine aircraft departed Bogotá-El Dorado Airport runway 13L on an ambulance flight to Leticia, carrying three doctors and two pilots. Shortly after takeoff, during initial climb, the crew contacted ATC and declared an emergency. The aircraft rolled to the right then entered an uncontrolled descent and crashed onto several houses located in the Fontibón neighborhood, bursting into flames. All five occupants were killed as well as two people on the ground.
Probable cause:
The exact cause of the accident could not be determined.
Final Report:

Crash of a Beechcraft B200 Super King Air in Garissa

Date & Time: Aug 6, 2007
Operator:
Registration:
5Y-HHM
Flight Type:
Survivors:
Yes
Schedule:
Nairobi - Garissa
MSN:
BB-1152
YOM:
1983
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a positioning flight from Nairobi to Garissa. On final approach to Garissa, a donkey entered the runway. The crew initiated a go-around procedure but the aircraft stalled and landed very hard. Both pilots escaped uninjured while the aircraft was damaged beyond repair.

Crash of a Beechcraft 200 Super King Air in Perth

Date & Time: Apr 9, 2007 at 1703 LT
Operator:
Registration:
VH-SGT
Survivors:
Yes
Schedule:
Perth - Mount Hale
MSN:
BB-73
YOM:
1975
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
9
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On 9 April 2007, at 1703 Western Standard Time (WST), the main landing gear from a Beech Super King Air 200 aircraft, registered VH-SGT, collapsed on landing at Perth airport. Approximately two hours earlier, the aircraft was chartered to fly from Perth to Mount Hale, WA when shortly after takeoff from Perth the aircraft experienced a malfunction of the landing gear system. The main wheels and nose gear had become jammed and were unable to fully retract when selected up by the pilot. The pilot completed the emergency checklist actions contained in the Aircraft Flight Manual, but was unable to retract or extend the gear using either the automated control or the manual emergency system. The pilot then requested assistance from a passenger to operate the manual emergency extension system. The landing gear remained jammed despite the additional force applied to the lever from the passenger. The pilot contacted air traffic services and requested further assistance from company engineering personnel to visually assess the extension state of the landing gear. Two aerodrome passes were completed throughout the troubleshooting exercise and the pilot remained in radio contact with both groups during this phase. Following the flyovers and after holding over Rottnest Island at 5,000 ft for a period of approximately two hours, the pilot flew the King Air back to Perth airport. With the gear still jammed in the partially retracted position, both the left and right main landing gear assemblies collapsed after the aircraft touched down on Runway 24. The aircraft was substantially damaged as a result of the collapse (Figure 1). The airport Rescue and Fire Fighting (RFF) services and other relevant agencies had been alerted and were waiting in response when the King Air landed. No injuries were sustained by the pilot or any of the nine passengers on board.
Probable cause:
From the evidence available, the investigation revealed that two major system components had failed which could have prevented the Beechcraft Super King Air 200 landing gear from properly retracting after takeoff. The following findings with respect to those failed landing gear system components should not be read as apportioning blame or liability to any particular organisation or individual.
Contributing safety factors:
• The left torque tube support bearing had not been lubricated and had seized due to the accumulation of dirt and grit contaminants that had migrated from the external service environment and into the bearing.
• The geared components within the right main landing gear actuator prematurely failed.
Other safety factors:
• The aircraft manufacturer’s maintenance manual contained insufficient instruction or guidance for operators and maintainers of Super King Air 200 aircraft for the lubrication of the landing gear torque tube support bearings.
Other key findings:
• Both component assemblies were integral to the function and normal operation of the Super King Air 200 mechanical landing gear system. A break down of either component assembly would have prevented any attempt by the pilot to retract or extend the aircraft’s main landing gear. However, while either failure could have produced the landing gear difficulties sustained, the investigation was not able to determine which mechanism was the principal contributor to the event.
• The investigation was unable to conclusively establish why the geared components within the right main landing gear actuator had prematurely failed.
• The lower thrust bearing within the right main landing gear actuator had been correctly installed.
Final Report: