Crash of a Swearingen SA226TC Metro II on Mt Seymour: 2 killed

Date & Time: Apr 13, 2015 at 0708 LT
Type of aircraft:
Operator:
Registration:
C-GSKC
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Vancouver – Prince George – Dawson Creek – Fort Saint John
MSN:
TC-235
YOM:
1977
Flight number:
CA066
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
2885
Captain / Total hours on type:
1890.00
Copilot / Total flying hours:
1430
Copilot / Total hours on type:
57
Aircraft flight hours:
33244
Circumstances:
On 13 April 2015, Carson Air Ltd. flight 66 (CA66), a Swearingen SA226-TC Metro II (registration C-GSKC, serial number TC-235), departed Vancouver International Airport (CYVR), British Columbia, with 2 pilots on board for an instrument flight rules flight to Prince George, British Columbia. At 0709 Pacific Daylight Time (PDT), approximately 6 minutes after leaving Vancouver, the aircraft disappeared from air traffic control radar while climbing through an altitude of 8700 feet above sea level in instrument meteorological conditions, about 4 nautical miles north of the built-up area of North Vancouver. Deteriorating weather conditions with low cloud and heavy snowfall hampered an air search; however, aircraft wreckage was found on steep, mountainous, snow-covered terrain by ground searchers at approximately 1645 PDT. The aircraft had experienced a catastrophic in-flight breakup. Both pilots were fatally injured, and the aircraft was destroyed. Although the aircraft’s 406-megahertz emergency locator transmitter activated, the antenna was damaged and no signal was received by the Cospas-Sarsat (international satellite system for search and rescue). The accident occurred during daylight hours.
Probable cause:
Findings as to causes and contributing factors:
1. For unknown reasons, the aircraft descended in the direction of flight at high speed until it exceeded its structural limits, leading to an in-flight breakup.
2. Based on the captain’s blood alcohol content, alcohol intoxication almost certainly played a role in the events leading up to the accident.

Findings as to risk:
1. If cockpit or data recordings are not available to an investigation, the identification and communication of safety deficiencies to advance transportation safety may be precluded.
2. If Canadian Aviation Regulations Subpart 703 operators are not required to have a Transport Canada–approved safety management system, which is assessed on a regular basis, there is a risk that those companies will not have the necessary processes in place to manage safety effectively.
3. If safety issues, such as concerns related to drug or alcohol abuse, are not reported formally through a company’s safety reporting system, there is a risk that hazards will not be managed effectively.
4. Transport Canada’s Handbook for Civil Aviation Medical Examiners(TP 13312) does not address the complete range of conditions that may be affected by drug or alcohol dependence. As a result, there is an increased risk that undisclosed cases of drug or alcohol dependence in commercial aviation will go undetected, placing the travelling public at risk.
5. If there is no regulated drug- and alcohol-testing requirement in place to reduce the risk of impairment of persons while engaged in safety-sensitive functions, employees may undertake these duties while impaired, posing a risk to public safety.
Final Report:

Crash of a De Havilland DHC-6 Twin Otter 100 in Muncho Lake: 1 killed

Date & Time: Jul 8, 2007 at 1235 LT
Operator:
Registration:
C-FAWC
Flight Phase:
Survivors:
Yes
Schedule:
Muncho Lake – Prince George
MSN:
108
YOM:
1968
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
22000
Captain / Total hours on type:
6000.00
Copilot / Total flying hours:
10800
Copilot / Total hours on type:
105
Circumstances:
At approximately 1235 Pacific daylight time, the Liard Air Limited de Havilland DHC-6-100 Twin Otter (registration C-FAWC, serial number 108) was taking off from a gravel airstrip near the Northern Rockies Lodge at Muncho Lake on a visual flight rules flight to Prince George, British Columbia. After becoming airborne, the aircraft entered a right turn and the right outboard flap hanger contacted the Alaska Highway. The aircraft subsequently struck a telephone pole and a telephone cable, impacted the edge of the highway a second time, and crashed onto a rocky embankment adjacent to a dry creek channel. The aircraft came to rest upright approximately 600 feet from the departure end of the airstrip. An intense post-impact fire ensued and the aircraft was destroyed. One passenger suffered fatal burn injuries, one pilot was seriously burned, the other pilot sustained serious impact injuries, and the other two passengers received minor injuries.
Probable cause:
Findings as to Causes and Contributing Factors:
1. The take-off was attempted at an aircraft weight that did not meet the performance capabilities of the aircraft to clear an obstacle and, as a result, the aircraft struck a telephone pole and a telephone cable during the initial climb.
2. A take-off and climb to 50 feet performance calculation was not completed prior to take-off; therefore, the flight crew was unaware of the distance required to clear the telephone cable.
3. The southeast end of the airstrip was not clearly marked; as a result, the take-off was initiated with approximately 86 feet of usable airstrip behind the aircraft.
4. The take-off was attempted in an upslope direction and in light tailwind, both of which increased the distance necessary to clear the existing obstacles.
Findings as to Risk:
1. Operational control within the company was insufficient to reduce the risks associated with take-offs from the lodge airstrip.
2. The take-off weight limits for lodge airstrip operations were not effectively communicated to the flight crew.
3. Maximum performance short take-off and landing (MPS) techniques may have been necessary in order to accomplish higher weight Twin Otter take-offs from the lodge airstrip; however, neither the aircraft nor the company were approved for MPS operations.
4. The first officer’s shoulder harness assembly had been weakened by age and ultraviolet (UV) light exposure; as a result, it failed within the design limits at impact.
5. The SeeGeeTM calculator operating index (OI) values being used by Liard Air Twin Otter pilots was between 0.5 and 1.0 units greater than the correct SeeGeeTM OI values; therefore, whenever the SeeGeeTM calculator was used for flight planning, the actual centre of gravity (c of g) of the aircraft would have been forward of the calculated CofG.
6. There are no airworthiness standards specifically intended to contain fuel and/or to prevent fuel ignition in crash conditions in fixed-gear United States Civil Aviation Regulation 3 and United States Federal Aviation Regulation 23 aircraft.
Final Report:

Crash of a Noorduyn UC-64A Norseman in Prince George

Date & Time: Apr 3, 1981
Type of aircraft:
Operator:
Registration:
N55555
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
228
YOM:
1943
Country:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances while taking off from Prince George, BC. There were no casualties.

Crash of a De Havilland DHC-6 Twin Otter 300 in Terrace: 12 killed

Date & Time: Jan 14, 1977
Operator:
Registration:
C-GNTB
Survivors:
No
Schedule:
Prince George – Terrace
MSN:
463
YOM:
1975
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
9
Pax fatalities:
Other fatalities:
Total fatalities:
12
Circumstances:
On approach to Terrace Airport, the crew encountered poor weather conditions with snow falls. On final, the pilot-in-command failed to realize his altitude was too low when, at an altitude of 1,200 feet, the airplane struck a hill located about 3 km short of runway. The aircraft was destroyed upon impact and all 12 occupants were killed.

Crash of a Douglas DC-6B near Hundred Mile House: 52 killed

Date & Time: Jul 8, 1965 at 1541 LT
Type of aircraft:
Operator:
Registration:
CF-CUQ
Flight Phase:
Survivors:
No
Schedule:
Vancouver – Prince George – Fort Saint John – Fort Nelson – Watson Lake – Whitehorse
MSN:
43844
YOM:
1953
Flight number:
CP021
Country:
Crew on board:
6
Crew fatalities:
Pax on board:
46
Pax fatalities:
Other fatalities:
Total fatalities:
52
Captain / Total flying hours:
13218
Captain / Total hours on type:
2690.00
Copilot / Total flying hours:
2657
Copilot / Total hours on type:
982
Aircraft flight hours:
29998
Circumstances:
Flight 21 was a scheduled domestic flight from Vancouver, British Columbia, to Whitehorse, Yukon Territory via Prince George, Fort St. John, Fort Nelson in British Columbia and Watson Lake, Yukon Territory. At 1442 hours PST, the aircraft took off on an instrument flight plan for Prince George, via Victor 300 and Blue 22 airways. In the vicinity of Hope, north-bound on Blue 22 airway, it was sighted by CPA Flight 22 and communication was established. Shortly afterwards at 1517 hours Flight 21 requested and received clearance to proceed from its position north of Hope direct to Williams Lake, which track would pass to the west of Ashcroft. At 1529 hours, it reported to the Vancouver Air Traffic Control Centre that it had passed Ashcroft at 1527 hours at 16 000 ft and was estimating William Lake at 1548 hours. This transmission was acknowledged by the Vancouver Centre. At 1538 hours, Vancouver Centre called Flight 21 and did not receive a reply. About two minutes later, three "mayday" calls were heard by Vancouver Centre. At approximately the same time a four-engined aircraft, subsequently identified as Flight 21, was observed by witnesses flying in the clear over the Gustafson Lake area about 20 miles west of 100 Mile House, B.C. The aircraft appeared to be in normal flight when an explosion was heard, following which smoke was observed and the tail separated from the fuselage. The main portion of the wreckage assumed a nose down attitude and spiraled to the left until it crashed into a wooded area about 4.5 miles north of Gustafson Lake. The accident occurred at 1541 hours. There were no survivors among the 52 occupants.
Probable cause:
Explosion of a device which resulted in aerial disintegration.
Final Report:

Crash of a De Havilland DH.83 Fox Moth in Prince George: 3 killed

Date & Time: Jul 3, 1948
Registration:
CF-DIQ
Survivors:
No
Schedule:
Prince George - Prince George
MSN:
FM.17
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
On final approach to Prince George, while completing a local flight, the single engine aircraft stalled and crashed. All three occupants were killed.

Crash of a Lockheed 14-H2 Super Electra near Chilliwack: 13 killed

Date & Time: Dec 20, 1942 at 1900 LT
Type of aircraft:
Operator:
Registration:
CF-CPD
Flight Phase:
Survivors:
No
Site:
Schedule:
Prince George – Vancouver
MSN:
1504
YOM:
1939
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
10
Pax fatalities:
Other fatalities:
Total fatalities:
13
Circumstances:
While cruising at an altitude of 7,000 feet by night and in marginal weather conditions, the aircraft hit the slope of Mt Cheam located near the Fraser Valley, in the region of Chilliwack. SAR operations were conducted but eventually suspended after few days as no trace of the aircraft nor the 13 occupants was found. The wreckage was spotted by hunters in August 1943.
Probable cause:
According to Canadian investigators, at the time of the accident, the aircraft was off track more than 120 km, most probably due to a general failure of the electric system. Analysis revealed that the crew did not follow the prescribed track after overflying the city of Squamish. Due to poor visibility, night, bad weather conditions and the failure of the lights, pilots were unconscious of their real position and were unable to locate the mountainous terrain on which the aircraft crashed.