Crash of a HESA IrAn-140-100 in Isfahan: 5 killed

Date & Time: Feb 16, 2009
Type of aircraft:
Operator:
Registration:
90-04
Flight Type:
Survivors:
No
Schedule:
Isfahan - Isfahan
MSN:
90-04
YOM:
2007
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The crew was performing a training flight on behalf of the Iranian constructor HESA (Iran Aircraft Manufacturing Industrial Company) which built the Antonov AN-140 under licence with the name HESA IrAn-140-100. On final approach to Isfahan-Shahin Shahr-HESA Airport, the aircraft crashed in unknown circumstances and was destroyed. All five occupants, one instructor and four pilots under training, were killed.

Crash of a Cessna T303 Crusader near Zadar: 4 killed

Date & Time: Feb 5, 2009 at 1454 LT
Type of aircraft:
Operator:
Registration:
9A-DLN
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Zagreb – Zadar
MSN:
303-00089
YOM:
1981
Location:
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Captain / Total flying hours:
20000
Copilot / Total flying hours:
3000
Circumstances:
The crew departed Zagreb Airport on a training flight to Zadar. While descending to Zadar Airport, he encountered marginal weather with icing conditions. At an altitude of 6,500 feet in clouds, the aircraft lost height and crashed in the Velebit Mountain Range. The aircraft was destroyed by impact forces and all four occupants were killed.
Probable cause:
The most probable cause of the accident is the entry with an uncertified aircraft into icing conditions and in mountain waves. The plane most likely froze on its tail first. After the plane most likely froze completely, it became too heavy, entered mountain waves, became completely uncontrollable, after which it crashed at a sharp angle from a height of about 6,500 feet and hit a hill at the foot of Vaganski Vrh. Due to the force of the impact, the plane completely disintegrated.
Final Report:

Crash of an AMI Turbo DC-3-65TP in Mojave

Date & Time: Feb 4, 2009 at 0852 LT
Type of aircraft:
Operator:
Registration:
N834TP
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Mojave - Mojave
MSN:
12590
YOM:
1947
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
18000
Captain / Total hours on type:
1326.00
Aircraft flight hours:
17277
Circumstances:
During the takeoff roll, the airplane began to drift to the right. Despite the certified flight instructor's and student's attempts, they were unable to stop the yaw and drift. As the airplane was about to depart the runway, the pilots did not reduce the throttles or apply brakes as they felt that it would be safer to attempt to get airborne. After departing the runway surface, the airplane collided with a series of berms, which sheared off the left landing gear and left engine. The right landing gear collapsed, and the airplane came to rest in a nose down attitude. Post accident e examination revealed that the student pilot had inadvertently set the rudder trim to the full right position when he adjusted the rudder pedals during the prestart checks. The rudder trim was in the full right position for the takeoff, and found in the same position upon post accident inspection.
Probable cause:
The student pilot failed to follow the checklist and set the takeoff trim properly prior to takeoff resulting in a loss of directional control. Contributing to the accident were the certified flight instructor's inadequate supervision and delayed remedial action.
Final Report:

Crash of Transall C-160D at Wunstorf AFB

Date & Time: Sep 22, 2008
Type of aircraft:
Operator:
Registration:
50+50
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
D72
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was performing a training flight in the region of Hanover. While flying at low altitude in the area of Frielendorf, passing from IFR to VFR mode, the aircraft collided with trees. The crew diverted to Wunstorf AFB where he landed safely. All occupants escaped uninjured while the aircraft was damaged beyond repair due to serious damages to tail and stabilizers.

Crash of a De Havilland DHC-6 Twin Otter 300 near Cochamó: 3 killed

Date & Time: Jul 2, 2008 at 1430 LT
Operator:
Registration:
947
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Puerto Montt - Puerto Montt
MSN:
404
YOM:
1974
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The crew departed Puerto Montt-El Tepual for a training flight. En route, the twin engine aircraft collided with the cables of a 23,000 volts powerline and crashed on a hilly terrain, bursting into flames. All three crew members were killed.

Crash of a Rockwell Shrike Commander 500S near Tonganoxie: 2 killed

Date & Time: Jun 24, 2008 at 1020 LT
Operator:
Registration:
N411JT
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Kansas City - Lawrence
MSN:
500-3097
YOM:
1971
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
10500
Captain / Total hours on type:
7550.00
Aircraft flight hours:
12427
Circumstances:
The airline's chief pilot was giving a newly-hired pilot a required competency/proficiency check. Memory data from the airplane's global positioning system showed the airplane made
steep 360-degree turns to the left and right before continuing towards a practice area at gradually decreasing airspeed and altitude. A low cloud ceiling prevailed. Witnesses said they
heard both engines "sputter, then quit," and saw the airplane clear a grove of trees, stall, and strike the ground. The landing gear was down and the flaps were in the approach setting. Both propellers were in the low pitch/high rpm setting, and bore little rotational signatures. Both engine fuel supply lines contained only residual fuel. Those familiar with the chief pilot's flying practices stated that he always followed a certain routine when giving a check ride. The routine consisted of the following: After performing steep 360-degree turns, he would ask the trainee to configure the airplane for landing and demonstrate minimum control maneuvers. Prior to executing steep turns, he would turn the boost pumps on. At the completion of the maneuver, the pumps would be turned off. The investigation revealed that there are unguarded fuel shutoff switches next to the boost pumps, and the circumstances of the accident are consistent with the these fuel shutoff switches being inadvertently placed in the off position, instead of the fuel boost pumps.
Probable cause:
The pilot-in-training inadvertently shutting off both engine fuel control valves causing a loss of power in both engines, and the pilot's failure to maintain control of the airplane resulting in a stall. Contributing to the accident was the chief pilot's inadequate supervision of the pilot-in-training.
Final Report:

Crash of a PZL-Mielec AN-2 in Krems

Date & Time: Jun 21, 2008 at 1200 LT
Type of aircraft:
Operator:
Registration:
HA-MBC
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Krems - Krems
MSN:
1G161-08
YOM:
1975
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Shortly after take off from Krems-Langenlois Airport, the single engine airplane encountered difficulties to gain height. Both right wings struck a tree and the aircraft crashed in an open field located about 200 metres from the runway. The aircraft was damaged beyond repair while all 12 skydivers and the pilot escaped uninjured.
Probable cause:
Loss of control at lift off because the CofG was after the rear limit due to a poor flight preparation and a wrong seating of the skydivers and their equipment in the main cabin.

Crash of a Swearingen SA226T Merlin IIIB off Bergen: 3 killed

Date & Time: Jun 20, 2008 at 1026 LT
Type of aircraft:
Operator:
Registration:
LN-SFT
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Bergen - Bergen
MSN:
T-342
YOM:
1980
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
15750
Captain / Total hours on type:
12000.00
Copilot / Total flying hours:
6310
Aircraft flight hours:
13551
Aircraft flight cycles:
5732
Circumstances:
The flight was a skill-test for a candidate that was hired as a first officer on SA226-T(B) Merlins for the operator Helitrans. He was one of two candidates that were employed by the company in early 2008. They underwent ground school and flight training in cooperation with the Swedish Type Rating Training Organisation (TRTO) Trafikkhögskolan. Later it became clear that the Swedish Civil Aviation Authority (CAA) did not accept skill-tests limited to first officer duties on a single pilot certified airplane, as the Norwegian CAA did. The candidates did not possess the skills to act as commanders on the Merlin, and there was a period of uncertainty while the operator and the Norwegian CAA discussed how to conduct the skill-tests, in particular whether to use a simulator or an actual airplane. After several months the issues were resolved and an examiner was appointed. There was a limited slot on a Thursday and a Friday where the examiner, the instructor/commander and the aircraft was available at Bergen Airport Flesland. The first candidate performed the skill-test on Thursday. The weather was not suited for flying skill tests. It was low ceiling, rain showers and winds up to 40 kt and turbulence. Turbulence caused the stick pusher to activate during the demonstration of slow flight. The commander decided to pull the circuit breaker for the Stall Avoidance and Stability Augmentation System (SAS) presumably to avoid nuisance activations of the stick pusher. After the slow flight demonstration, the examiner asked the candidate to demonstrate a stall. The candidate found this exercise frightening as she experienced great difficulties, having to use all her available physical strength to regain normal flight with the engines on full power and in IMC conditions. The weather was similar on Friday with even stronger winds. The SAS circuit breaker was not reset. This was confirmed during the start-up check. The examiner requested a similar program during this skill-test as he did the day before. However, when it came to demonstrating stalls, the examiner asked for a slow flight up to first indication of stall, and not an actual stall. He asked for call outs and a minimum loss of altitude recovery. The commander undertook the tasks of adding power and retracting gear and flaps on the candidate’s request. It was IMC. During this exercise the crew lost control of attitude and airspeed. The stall warning came on, but the airspeed decreased, even with full power applied. Radar data show that the altitude increased 200 – 400 ft during the period where control was lost. Airspeed decreased to about 30 kt and a sink rate of about 10 000 ft/min eventually developed. The airplane hit the sea in a near horizontal attitude about 37 sec. after control was lost. All three on board were fatally injured. The accident aircraft was used for coastguards duties and was modified with external sensors and antennas. The AIBN made a Computational Fluid Dynamics analysis in order to determine whether these installations influenced on stability and flight characteristics in the slow flight and pre-stall regime. It was found that the modifications reduced the overall performance, but did not result in any significant degradation of stability and control in this regime. There was no investigation as to any influence on the characteristics of a fully developed stall. The AIBN is of the opinion that this accident highlights the need for a change in the current training on initial stall recovery techniques, especially the focus on minimum loss of altitude at the expense of breaking the stall by lowering the nose and thus reducing the angle of attack. The AIBN has issued two safety recommendations to the Norwegian CAA; one regarding the conduct of skill-tests for pilots in a multi crew concept on single pilot airplanes, and one suggesting increased focus on flight examiners tasks.
Probable cause:
The following findings were identified:
- Even if the weather on the day of the accident was within the permitted limits, it was not suitable to perform 'airwork' or training exercises,
- The captain thought the weather was not suitable for conducting the skill test for the second candidate. That he nevertheless agreed to take the test may be due to the fact that he felt
a pressure to complete the mission,
- The flight was conducted in challenging conditions and there is reason to believe that atmospheric turbulences may have contributed to the loss of control during the skill flight,
- The flight was completed in clouds, and it can be assumed that the lack of visual references in the clouds contributed to the loss of control.
Final Report:

Crash of a De Havilland DHC-6 Twin Otter 300 in Sidra

Date & Time: Jun 8, 2008
Operator:
Registration:
5A-DAU
Flight Type:
Survivors:
Yes
Schedule:
Sidra - Sidra
MSN:
570
YOM:
1977
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 local training flight at Sidra Airport when the accident occurred in unknown circumstances. The aircraft came to rest in a sandy area with its undercarriage and left wing sheared off. Both pilots evacuated safely.

Crash of Beechcraft T-1A Jayhawk in Lubbock

Date & Time: May 21, 2008 at 2144 LT
Type of aircraft:
Operator:
Registration:
93-0633
Flight Type:
Survivors:
Yes
Schedule:
Lubbock - Lubbock
MSN:
TT-90
YOM:
1993
Location:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was completing a night training flight on behalf of the U.S. Air Force 86th Flying Training Squadron, 47th Flying Training Wing, Laughlin Air Force Base, Texas. After several manoeuvres in the vicinity of the Lubbock-Preston Smith Airport, the crew started an non precision approach to runway 17R. At that time, weather conditions were not so good with rain showers and winds up to 40 knots. On final approach, the aircraft seems to sink and pitched down. The captain increased both engines power but the aircraft hit the ground 1,1 mile short of runway 17R threshold. On impact, the nose gear was sheared off and the aircraft came to rest in a field. Both pilots were slightly injured while the aircraft was damaged beyond repair.
Probable cause:
Conjunction of poor weather conditions and crew errors. The aircraft encountered windshear with downburst on descent and the crew ignored warnings. The combination of the following human factors placed the aircraft in a dangerous weather environment: poor mission planning, inattention, complacency, lack of procedural knowledge and restricted vision.