Crash of a Piper PA-31T Cheyenne in Quetzaltenango

Date & Time: Nov 22, 2006
Type of aircraft:
Operator:
Registration:
TG-NCN
Flight Type:
Survivors:
Yes
Schedule:
Guatemala City - Quetzaltenango
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
On final approach to Quetzaltenango-Los Altos Airport, the pilot encountered engine problems. He completed a belly landing in a wheatfield located few km from the airport. The pilot escaped uninjured while the aircraft was damaged beyond repair.

Crash of a Boeing 727-23F in Leticia: 6 killed

Date & Time: Nov 18, 2006 at 2107 LT
Type of aircraft:
Operator:
Registration:
HK-3667X
Flight Type:
Survivors:
No
Schedule:
Bogotá – Leticia
MSN:
19430
YOM:
1966
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
6
Captain / Total flying hours:
8036
Copilot / Total flying hours:
6617
Aircraft flight hours:
66192
Circumstances:
The Boeing 727 departed Bogotá-El Dorado Airport on a night cargo flight to Leticia, carrying 3 passengers, 3 crew members and a load of 13,166 kilos of fish. While descending to Leticia-Alfredo Vásquez Cobo Airport, the crew was informed about the weather conditions at destination with a visibility down to 4 km with local patches of fog. On approach, the crew asked ATC to improve the runway lights intensity as the runway 21 is not equipped with approach lights. On short final, at a height of about 150 feet, the aircraft collided with a television antenna and crashed in a wooded area located 3,7 km short of runway 21, bursting into flames. The aircraft was totally destroyed and all six occupants were killed.
Probable cause:
Following a flight under IFR mode, the crew decided to continue the approach by night and limited visibility under VFR mode, without meeting the minimum requirements for this type of operation. This decision led the aircraft descending at an unsafe altitude until it collided with a television antenna and crashed. The following contributing factors were identified:
- Poor approach planning,
- Poor judgment,
- Violation of IFR procedures,
- The crew's inability to circumvent the obstacle on the ground by encountering unforeseen circumstances beyond their capacity.
Final Report:

Crash of a NAMC YS-11A-600 in Manila

Date & Time: Nov 16, 2006 at 1425 LT
Type of aircraft:
Operator:
Registration:
RP-C3590
Survivors:
Yes
Schedule:
Tacloban - Manila
MSN:
2106
YOM:
1969
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The twin engine aircraft departed Tacloban on a charter flight to Manila, carrying five employees of the Philippines Central Bank and four crew members. Upon landing on runway 06, the aircraft veered off runway to the right, lost its right main gear and came to rest. All 9 occupants escaped uninjured while the aircraft was damaged beyond repair.

Crash of a Cessna 421B Golden Eagle II in Big Bear Lake: 3 killed

Date & Time: Nov 14, 2006 at 1013 LT
Registration:
N642BD
Flight Phase:
Survivors:
No
Schedule:
Big Bear Lake - Las Vegas
MSN:
421B-0658
YOM:
1974
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Captain / Total flying hours:
4700
Aircraft flight hours:
4556
Circumstances:
Witnesses said that it appeared that the left engine sustained a loss of power just after rotation and liftoff. The airplane initially had a positive rate of climb, but then immediately yawed to the left as it cleared 30-foot-high power lines that were perpendicular across the flight path. The airport is at the east end of a lake in a mountain valley; the airplane departed to the west and was flying over the lake. The airplane was about 2 miles from the runway when witnesses observed dark smoke coming from the left engine, and the smoke increased significantly as the flight continued. The airplane banked hard left with the wings perpendicular to the ground, and then nosed in vertically. The landing gear remained down throughout the accident sequence. On site examination revealed that the top spark plugs for the left engine were black and sooty. A detailed examination revealed that the left turbocharger turbine wheel shaft fractured and separated. Extreme oxidation of the fracture surfaces prevented identification of the failure mode; however, the oxidation was the result of high temperature exposure indicating that the fracture occurred while the turbocharger was at elevated temperature during operation. The multiple planes exhibited by the fracture also were not consistent with a ductile torsional failure as would be expected from a sudden stoppage of either rotor. No evidence of a mechanical malfunction was noted to the right engine. The Cessna Owners Manual for the airplane notes that the most critical time for an engine failure is a 2-3 second period late in the takeoff while the airplane is accelerating from the minimum single-engine control speed of 87 KIAS to a safe single-engine speed of 106 KIAS. Although the airplane is controllable at the minimum control speed, the airplane's performance is so far below optimum that continued flight near the ground is improbable. Once 106 KIAS is achieved, altitude can more easily be maintained while the pilot retracts the landing gear and feathers the propeller. The best single-engine rate-of-climb is 108 KIAS with flaps up below 18,000 feet msl. Section VI of the manual provides operational data for single-engine climb capability. The data was only valid for the following conditions: gear and flaps retracted, inoperative propeller feathered, wing banked 5 degrees toward the operating engine, 39.5 inches of manifold pressure if below 18,000 feet, and mixture at recommended fuel flow.
Probable cause:
Failure of the turbine wheel shaft in the left turbocharger during the takeoff initial climb for undetermined reasons, and the pilot's failure to attain and maintain safe single engine airspeed that led to a loss of control.
Final Report:

Crash of a PZL-Mielec AN-28 in Bukavu

Date & Time: Nov 12, 2006
Type of aircraft:
Operator:
Registration:
9Q-COL
Survivors:
Yes
MSN:
1AJ002-09
YOM:
1986
Location:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
For unknown reasons, the twin engine aircraft landed hard at Bukavu-Kavumu Airport. It went out of control, veered off runway and came to rest. There were no injuries but the aircraft was damaged beyond repair.

Crash of a Learjet 35A in Nakhon Sawan: 7 killed

Date & Time: Nov 8, 2006 at 0950 LT
Type of aircraft:
Operator:
Registration:
40208
Flight Phase:
Survivors:
No
Schedule:
Nakhon Sawan – Khon Kaen
MSN:
35-635
YOM:
1987
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
Shortly after takeoff from Nakhon Sawan-Takhli AFB, while climbing to a height of about 150 feet, the pilot contacted ATC and declared an emergency following a loss of engine power. He elected to return for an emergency landing when the aircraft went out of control and crashed onto a hangar located near the airport, bursting into flames. All seven occupants were killed, among them two photographers and one mechanic who were taking part to a reconnaissance mission in view to prepare an incoming air race in Thailand.

Crash of a Swearingen SA226AC Metro II in Norway House

Date & Time: Nov 8, 2006 at 0834 LT
Type of aircraft:
Operator:
Registration:
C-FTNV
Survivors:
Yes
Schedule:
Winnipeg – Norway House
MSN:
TC-239E
YOM:
1977
Flight number:
PAG105
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
6000
Captain / Total hours on type:
4500.00
Copilot / Total flying hours:
4000
Copilot / Total hours on type:
15
Circumstances:
The aircraft was on a flight from Winnipeg, Manitoba, to Norway House, Manitoba, with two crew members and seven passengers on board. After touchdown on Runway 05, when propeller reverse was selected, the aircraft veered to the left. The crew attempted to regain directional control; however, the aircraft departed the left side of the runway surface, entered an area of loose snow, traversed a shallow ditch, climbed a rocky embankment, and came to rest on its belly with all three landing gears collapsed. The crew and passengers exited the aircraft through the main door stairway and the over-wing exits. There were no reported injuries. The accident occurred during daylight hours at 0834 central standard time.
Probable cause:
Findings as to Causes and Contributing Factors:
1. The left engine fuel control support assembly failed in fatigue and released one of three attachment bolts, which resulted in a slight displacement of the fuel control and changed the propeller control dimension. As a result, Beta pressure was achieved and propeller reverse was available for the left engine before it was available for the right engine.
2. The pilot selected thrust reverse without confirmation that the Beta lights were on for both engines, and the aircraft veered from the runway, most likely as a result of temporary asymmetric thrust.
Finding as to Risk:
1. There is no requirement to include the Beta light call as part of the pre-landing briefing. Briefing this item would remind the pilots of the need to confirm Beta light activation for both engines before application of thrust reverse.
Final Report:

Crash of a Yakovlev Yak-40 in Caticlan

Date & Time: Nov 2, 2006 at 0745 LT
Type of aircraft:
Operator:
Registration:
RP-C2695
Flight Type:
Survivors:
Yes
Schedule:
Manila - Caticlan
MSN:
9 52 20 41
YOM:
1975
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew departed Manila-Ninoy Aquino Airport on a positioning flight to Caticlan to carry a group of tourists. After touchdown, the left tyre burst. The aircraft deviated to the left then veered off runway and contacted a grassy area. The left main gear collapsed and the aircraft came to rest. All three crew members escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Loss of control after a tyre burst on landing.

Crash of an Antonov AN-12BP in Lokichoggio

Date & Time: Nov 1, 2006 at 1344 LT
Type of aircraft:
Operator:
Registration:
9L-LFQ
Flight Type:
Survivors:
Yes
Schedule:
Nairobi – Lokichogio
MSN:
2 4 005 02
YOM:
1962
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Upon landing on runway 27 at Lokichoggio Airport, the aircraft bounced three times then landed firmly. Upon impact, the nose gear collapsed and the aircraft slid on its nose before coming to rest about 100 metres before the runway end. All nine occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
Wrong approach configuration on part of the crew who completed the approach with an excessive rate of descent, causing the aircraft to land hard and to bounce three times. The high g loads upon impact caused the nose gear to collapse.

Crash of an Avro 748-245-2A in Alek

Date & Time: Oct 31, 2006
Type of aircraft:
Operator:
Registration:
S2-ABE
Flight Type:
Survivors:
Yes
Schedule:
Wunrok - Alek
MSN:
1658
YOM:
1968
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After landing, the aircraft could not be stopped on the remaining distance. It overran, lost its nose gear and came to rest with both propellers damaged. All five occupants escaped uninjured while the aircraft was damaged beyond repair. The accident occurred somewhere in October 2006, exact date unknown.