Crash of a Swearingen SA227BC Metro III in Cork: 6 killed

Date & Time: Feb 10, 2011 at 0950 LT
Type of aircraft:
Operator:
Registration:
EC-ITP
Survivors:
Yes
Schedule:
Belfast – Cork
MSN:
BC-789B
YOM:
1992
Flight number:
NM7100
Location:
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
10
Pax fatalities:
Other fatalities:
Total fatalities:
6
Captain / Total flying hours:
1801
Captain / Total hours on type:
1600.00
Copilot / Total flying hours:
539
Copilot / Total hours on type:
289
Aircraft flight hours:
32653
Aircraft flight cycles:
34156
Circumstances:
The aircraft departed Belfast City Airport (EGAC) on an international scheduled passenger service to Cork Airport (EICK). Low Visibility Procedures (LVP) were in operation at the destination. The aircraft carried out two ILS1 approaches, each followed by a missed approach. The aircraft then entered a holding pattern following which a third ILS approach was made to Runway (RWY) 17. The approach was continued below Decision Height (200 ft) and a missed approach was initiated. Approaching the runway threshold, the aircraft rolled to the left followed by a rapid roll to the right during which the right wingtip contacted the runway surface. The aircraft continued to roll and impacted the runway in a fully inverted position. The aircraft departed the runway surface to the right and came to rest in soft ground. A significant quantity of mud entered the aircraft through a fracture in the roof, partially filling the cabin. Six persons (including the two Flight Crew members) were fatally injured, four were seriously injured and two received minor injuries. The propeller blades on both engines were severely damaged; three of the four propeller blades on the right-hand engine detached during the impact sequence. Fire occurred in both engines after impact. These fires were extinguished expeditiously by the Airport Fire Service.
Probable cause:
Loss of control during an attempted go-around initiated below Decision Height (200 feet) in Instrument Meteorological Conditions.
The following factors were considered as significant:
- The approach was continued in conditions of poor visibility below those required.
- The descent was continued below the Decision Height without adequate visual reference being acquired.
- Uncoordinated operation of the flight and engine controls when go-around was attempted
- The engine power-levers were retarded below the normal in-flight operational range, an action prohibited in flight.
- A power difference between the engines became significant when the engine power levers were retarded below the normal in-flight range.
- Tiredness and fatigue on the part of the Flight Crew members.
- Inadequate command training and checking.
- Inappropriate pairing of Flight Crew members, and
- Inadequate oversight of the remote Operation by the Operator and the State of the Operator.
Final Report:

Crash of a Beechcraft B90 King Air in Harrisburg

Date & Time: Feb 8, 2011
Type of aircraft:
Registration:
N90BU
Flight Type:
Survivors:
Yes
MSN:
LJ-425
YOM:
1969
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After landing at Harrisburg Airport, the undercarriage collapsed and the aircraft came to rest on its belly. Both occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
The exact cause of the accident remains unknown as no investigation was completed by the NTSB.

Crash of a Hawker 850XP in Sulaymaniyah: 7 killed

Date & Time: Feb 4, 2011 at 1749 LT
Type of aircraft:
Operator:
Registration:
OD-SKY
Flight Phase:
Survivors:
No
Schedule:
Sulaymānīyah - Ankara
MSN:
258804
YOM:
2006
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
Shortly after take off from Sulaymaniyah Airport runway 31, while in initial climb, the aircraft stalled and crashed 2,100 metres from the airport, bursting into flames. The aircraft was totally destroyed by a post crash fire and all seven occupants were killed, among them four employees of the Iraqi communications company Asiacell. Weather conditions at the time of the accident were as follow: 1,500 metres visibility in snow falls, overcast 3,500 feet.
Probable cause:
The following findings were identified:
- The wings, elevator and horizontal stabilizer top surface were contaminated with ice and snow.
- The crew was in a hurry due to early passenger arrival.
- The crew didn’t remove the snow and ice contamination from the control surfaces nor did he call for de-icing actions.
- Ice and snow contamination on tail section most likely cause sluggish rotation during the takeoff; this will resulting in over rotation and wing stall.
- Snow and ice contamination on the wing, fuselage and tail will compromise the normal takeoff characteristics.
- A combination of snow and ice causing disruptive air flow, heaver actual weights and over rotation, the combination of which most likely didn’t activate the stall warning safety design. The aircraft could stall asymmetrical without warning during takeoff.
- That was the probable cause of the accident.
Final Report:

Ground accident of a Gulfstream GIV in Papeete

Date & Time: Jan 30, 2011 at 1725 LT
Type of aircraft:
Operator:
Registration:
N127DK
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
1127
YOM:
1990
Location:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While taxiing at Papeete-Faaa Airport, the aircraft went out of control and collided with various ground handling equipment such as a catering truck, a belt loader and cargo containers. There were no injuries but the aircraft was damaged beyond repair.

Crash of a Fokker F27 Friendship 500CRF in Nairobi

Date & Time: Jan 27, 2011 at 1335 LT
Type of aircraft:
Operator:
Registration:
5X-FFD
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Nairobi - Nairobi
MSN:
10530
YOM:
1976
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The twin engine aircraft was engaged in a local post maintenance test flight from Nairobi-Wilson Airport. The crew consisted of two pilots and two engineers. During the takeoff roll from runway 07, the captain decided to abort. Unable to stop within the remaining distance, the aircraft overran, went through a fence, lost its nose gear and came to rest in a field. All four occupants escaped with minor injuries while the aircraft was damaged beyond repair.

Ground accident of a Boeing 737-2T5 at Hoedspruit AFB

Date & Time: Jan 10, 2011 at 2050 LT
Type of aircraft:
Operator:
Registration:
ZS-SGX
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Hoedspruit - Johannesburg
MSN:
22396/730
YOM:
1981
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
26512
Copilot / Total flying hours:
1300
Copilot / Total hours on type:
1100
Aircraft flight hours:
70094
Circumstances:
The aircraft was flown on a non-scheduled charter flight from O. R. Tambo International Airport to Hoedspruit military aerodrome, where it landed safely and all 97 passengers disembarked. The crew then prepared to return to O. R. Tambo International Airport with no passengers on board. Whilst taxiing to the cleared holding point for takeoff, the pilot switched off the landing lights to avoid blinding an approaching aircraft. As a result, he overshot the turning point in the darkness and found himself at the end of the taxiway with insufficient space to turn around. According to him, he decided to manoeuvre the aircraft out of the "dead end" by turning into the last taxiway, which led to military hangars, and then reversing the aircraft to carry out a 180° turn. This was to be done without external guidance. Whilst reversing the aircraft, the pilot failed to stop it in time, the main wheels rolled off the edge of the taxiway and the aircraft slipped down a steep embankment, coming to rest with the nose-wheel still on the taxiway. The aeroplane was substantially damaged, but no-one was injured.
Probable cause:
Inappropriate decision by the captain to reverse the aircraft at night without external guidance.
Final Report:

Crash of a Boeing 727-286 in Orūmīyeh: 78 killed

Date & Time: Jan 9, 2011 at 1945 LT
Type of aircraft:
Operator:
Registration:
EP-IRP
Survivors:
Yes
Schedule:
Tehran - Orumiyeh
MSN:
20945/1048
YOM:
1974
Flight number:
IR277
Country:
Region:
Crew on board:
9
Crew fatalities:
Pax on board:
96
Pax fatalities:
Other fatalities:
Total fatalities:
78
Aircraft flight hours:
9019
Circumstances:
The aircraft departed Tehran-Mehrabad Airport at 1815LT with a delay of more than two hours due to poor weather conditions at destination. While descending to Orūmīyeh Airport by night, the crew encountered poor weather conditions with snow falls, visibility 800 metres and three ceilings at 1,500, 2,000 and 6,000 feet. After the crew was unable to intercept the ILS, the decision to initiate a go-around procedure was taken. Approaching the stall speed, the stick shaker activated and the aircraft probably encountered icing conditions. In a left bank angle estimated between 26 and 40°, the engine n°3 and 1 failed. At an altitude of 600 feet and at a speed of 96 knots, the flaps were retracted, causing the aircraft to stall and to impact the ground. The aircraft broke in three but there was no fire. 70 passengers and 8 crew members were killed while 27 other occupants were injured, some seriously.
Probable cause:
Bad weather conditions for the aircraft and inappropriate actions by cockpit crew to confront the situation is the main cause of the accident. The following contributing factors were identified:
- The old technology of aircraft systems,
- Absence of a suitable simulator for adverse weather conditions,
- Failure to correctly follow the operating manual by the flight crew,
- Inadequate cockpit resources management (CRM).

Crash of a Learjet 35A in Springfield

Date & Time: Jan 6, 2011 at 1100 LT
Type of aircraft:
Operator:
Registration:
N800GP
Survivors:
Yes
Schedule:
Chicago - Springfield
MSN:
35A-158
YOM:
1978
Flight number:
PWA800
Crew on board:
2
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
5932
Captain / Total hours on type:
827.00
Aircraft flight hours:
16506
Circumstances:
The flight encountered light rime icing during an instrument approach to the destination airport. The copilot was the pilot flying at the time of the accident. He reported that the airframe anti-icing system was turned off upon intercepting the instrument approach glide slope, which was shortly before the airplane descended below the cloud layer. He recalled observing light frost on the outboard wing and tip tank during the approach. The stick shaker activated on short final, and the airplane impacted left of the runway centerline before it ultimately departed the right side of the runway pavement and crossed a slight rise before coming to rest in the grass. The cockpit voice recorder transcript indicated that the pilots were operating in icing conditions without the wing anti- ice system activated for about 4 1/2 minutes prior to activation of the stick shaker. A postaccident examination of the airplane did not reveal any anomalies consistent with a preimpact failure of the flight control system or a loss of anti-ice system functionality. A performance study determined that the airplane’s airspeed during the final 30 seconds of the flight was about 114 knots and that the angle of attack ultimately met the stick shaker threshold. The expected stall speed for the airplane was about 93 knots. The airplane flight manual stated that anti-ice systems should be turned on prior to operation in icing conditions during normal operations. The manual warned that even small accumulations of ice on the wing leading edge can cause an aerodynamic stall prior to activation of the stick shaker and/or stick pusher.
Probable cause:
The pilot’s decision to conduct an instrument approach in icing conditions without the anti-ice system activated, contrary to the airplane flight manual guidance, which resulted in an inadvertent aerodynamic stall due to an in-flight accumulation of airframe icing.
Final Report:

Crash of a Beechcraft E18S in New Stuyahok

Date & Time: Jan 3, 2011 at 1350 LT
Type of aircraft:
Operator:
Registration:
N9001
Flight Type:
Survivors:
Yes
Schedule:
Kenai - New Stuyahok
MSN:
BA-460
YOM:
1959
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
6539
Captain / Total hours on type:
464.00
Aircraft flight hours:
19571
Circumstances:
The pilot reported that the runway at the destination airport was ice-covered, and that upon touchdown the surface was slicker than he had anticipated. He aborted the landing by applying full power to take off. The airplane was unable to out-climb the rising terrain at the end of the runway, and it collided with terrain, sustaining substantial damage to the fuselage and both wings. The pilot indicated that there were no mechanical issues with the airplane that precluded its normal operation.
Probable cause:
The pilot's misjudgment of the runway surface condition, resulting in an aborted landing and collision with rising terrain during the ensuing takeoff attempt.
Final Report:

Ground fire of a Tupolev TU-154B-2 in Surgut: 3 killed

Date & Time: Jan 1, 2011 at 1525 LT
Type of aircraft:
Operator:
Registration:
RA-85588
Flight Phase:
Survivors:
Yes
Schedule:
Surgut - Moscow
MSN:
83A588
YOM:
1983
Flight number:
KGL348
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
126
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
12202
Captain / Total hours on type:
2780.00
Copilot / Total flying hours:
3775
Copilot / Total hours on type:
3279
Aircraft flight hours:
32354
Aircraft flight cycles:
13147
Circumstances:
Ready for taxi, the crew started the engines when a short circuit occurred and a fire erupted in the rear compartment. The evacuation of all 134 occupants was initiated but three passengers died while 32 others were seriously injured. The aircraft was totally destroyed by fire. The OAT was -29° C at the time of the incident.
Probable cause:
A short circuit emerged while the aircraft generators were connected to the aircraft's electrical system after start-up of the engines, via an APU. The short circuit caused a strong fire in the generators compartment in the tail which spread rapidly through the fuselage. The cause of the fire was an electrical arc produced by electrical currents exceeding ten to 20 times the nominal loads when two generators not synchronized with each other were brought online but got connected together instead of being connected to parallel busses. The following contributing factors were identified:
- Poor technical conditions of contacts TKS233DOD responsible for connecting the generators with the electrical busses, that were damaged by prolonged operation without maintenance. A contact normally open was welded and fractured insulation material moved between contacts that are normally closed. These abnormal contact positions led to the connection between #2 and #3 generators.
- Differences in the schematic diagrams of generator 2 and generators 1 and 3. When the switch is moved from "check" to "enable" with no delay in the "neutral" position generator 2 is brought online without time delay which leads to increased wear of normally closed contacts in the TKS233DOD unit.
- The specific design of the electrical systems to ensure power supply to each bus from either the APU or either engine integrated drive generator.
Final Report: