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Crash of a Socata TBM-910 in Westlock

Date & Time: Oct 10, 2021 at 1102 LT
Type of aircraft:
Registration:
C-FFYM
Flight Type:
Survivors:
Yes
Schedule:
Vernon – Calgary – Westlock
MSN:
1190
YOM:
2017
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total hours on type:
235.00
Aircraft flight hours:
449
Circumstances:
The airplane was conducting an instrument flight rules flight from Vernon Airport, British Columbia, to Westlock Aerodrome, Alberta, with a stop at Calgary/Springbank Airport, Alberta, to pick up passengers, after which 1 pilot and 3 passengers were on board. At 1102:26 Mountain Daylight Time, while the aircraft was landing on Runway 28 at Westlock Aerodrome, the aircraft bounced and the pilot initiated a go-around. During the application of engine power for the go-around, the aircraft rolled to the left, struck the runway inverted, and came to rest on the runway’s south side. The 3 passengers exited the aircraft through the main cabin door with the assistance of persons nearby. One passenger received serious injuries, and the other 2 had minor injuries. The pilot, who was seriously injured, was trapped in the cockpit for approximately 2 hours before first responders could safely rescue him from the wreckage. An emergency locator transmitter signal was received by the search and rescue satellite system. The aircraft was significantly damaged and there was no post-impact fire.
Probable cause:
Findings as to causes and contributing factors:
1. The aircraft joined the final approach well above the optimal 3° descent path and, during the steep approach that followed, the aircraft’s airspeed continually decelerated and resulted in an unstabilized approach.
2. On short final, the pilot reduced the rate of descent by increasing pitch rather than by adding power. As a result, the airspeed continued to decrease and the aircraft entered a stall, resulting in a hard landing and a subsequent bounce.
3. During the attempted rejected landing, the aircraft entered a 25° nose-high attitude and approached a stall condition. This low-speed condition combined with the high power setting resulted in the aircraft entering a rapid roll to the left and striking the runway in an inverted attitude.
4. The passengers did not receive a safety briefing before departure or before landing, and multiple items in the cabin were not secured. As a result, 1 passenger sustained serious injuries due to the deceleration forces and the loose items that were thrown around in the cabin during the accident.
5. The pilot was not wearing the available shoulder harness, and his torso was unrestrained during the impact. As a result, he sustained serious injuries.

Findings as to risk:
1. If pilots do not declare all health issues to Transport Canada Civil Aviation Medical Examiners and pilots’ family physicians do not declare issues assessed to be a risk to aviation safety to Transport Canada, there is an increased risk that pilots will operate with diagnosed medical conditions or medical side effects that could affect flight safety.
2. If an aircraft propeller is rotating and passengers are not supervised during boarding operations, there is a risk that passengers may inadvertently contact the propeller, potentially causing fatal injuries.

Other findings:
1. Following a review of the pilot’s medical history and prescription medication use, the investigation determined that the medication did not contribute to the accident.
Final Report:

Crash of a Piper PA-31-310 Navajo C on Mt Rae: 2 killed

Date & Time: Aug 1, 2018 at 1336 LT
Type of aircraft:
Operator:
Registration:
C-FNCI
Flight Phase:
Survivors:
No
Site:
Schedule:
Penticton - Calgary
MSN:
31-8112007
YOM:
1981
Location:
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
4400
Captain / Total hours on type:
2800.00
Aircraft flight hours:
7277
Circumstances:
On 01 August 2018, after completing 2 hours of survey work near Penticton, British Columbia (BC), an Aries Aviation International Piper PA-31 aircraft (registration C-FNCI, serial number 31-8112007) proceeded on an instrument flight rules flight plan from Penticton Airport (CYYF), BC, to Calgary/Springbank Airport (CYBW), Alberta, at 15 000 feet above sea level. The pilot and a survey technician were on board. When the aircraft was approximately 40 nautical miles southwest of CYBW, air traffic control began sequencing the aircraft for arrival into the Calgary airspace and requested that the pilot slow the aircraft to 150 knots indicated airspeed and descend to 13 000 feet above sea level. At this time, the right engine began operating at a lower power setting than the left engine. About 90 seconds later, at approximately 13 500 feet above sea level, the aircraft departed controlled flight. It collided with terrain near the summit of Mount Rae at 1336 Mountain Daylight Time. A brief impact explosion and fire occurred during the collision with terrain. The pilot and survey technician both received fatal injuries. The Canadian Mission Control Centre received a 406 MHz emergency locator transmitter signal from the occurrence aircraft and notified the Trenton Joint Rescue Coordination Centre. Search and rescue arrived on site approximately 1 hour after the accident.
Probable cause:
Findings as to causes and contributing factors:
1. The pilot did not continuously use oxygen above 13 000 feet and likely became hypoxic as the aircraft climbed to 15 000 feet. The pilot did not recognize his symptoms or take action to restore his supply of oxygen.
2. As a result of hypoxia-related cognitive and perceptual degradations, the pilot was unable to maintain effective control of the aircraft or to respond appropriately to the asymmetric power condition.
3. The aircraft departed controlled flight and entered a spin to the right because the airspeed was below both the published minimum control speed in the air and the stall speed, and because there was a significant power asymmetry, a high angle of attack, and significant asymmetric drag from the windmilling propeller of the right engine.
4. When the aircraft exited cloud, the pilot completed only 1 of the 7 spin-recovery steps: reducing the power to idle. As the aircraft continued to descend, the pilot took no further recovery action, except to respond to air traffic control and inform the controller that there was an emergency.

Findings as to risk:
1. If flight crews do not undergo practical hypoxia training, there is a risk that they will not recognize the onset of hypoxia when flying above 13 000 feet without continuous use of supplemental oxygen.

Other findings:
1. The weather information collected during the investigation identified that the loss of control was not due to in-flight icing, thunderstorms, or turbulence.
2. Because the Appareo camera had been bumped and its position changed, the pilot’s actions on the power controls could not be determined. Therefore, the investigation was unable to determine whether the power asymmetry was the result of power-quadrant manipulation by the pilot or of an aircraft system malfunction.
3. The flight path data, audio files, and image files retrieved from the Appareo system enabled the investigators to better understand the underlying factors that contributed to the accident.
Final Report:

Crash of a Piper PA-46-310P Malibu near Invermere: 3 killed

Date & Time: Oct 26, 2007 at 1912 LT
Registration:
C-GTCS
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Salem – Calgary
MSN:
46-08065
YOM:
1987
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The privately operated Piper Malibu PA-46-310P was en route from Salem, Oregon, to Springbank, Alberta, on an instrument flight rules flight plan. During the descent through 17 000 feet at approximately 55 nautical miles (nm) southwest of Calgary, the pilot declared an emergency with the Edmonton Area Control Centre, indicating that the engine had failed. The pilot attempted an emergency landing at the Fairmont Hot Springs airport in British Columbia, but crashed at night at about 1912 mountain daylight time 11 nm east of Invermere, British Columbia, in wooded terrain. The pilot and two passengers were fatally injured.
Probable cause:
Findings as to Causes and Contributing Factors:
1. An unapproved part was installed in the alternator coupling. This resulted in debris from the coupling causing a partial blockage of oil flow to the number two connecting rod bearing. This low oil flow caused overheating and failure of the bearings, connecting rod cap bolts and nuts, and the subsequent engine failure.
2. The engine failure occurred after sunset and the low-lighting conditions in the valley would have made selecting a suitable landing area difficult.
3. The engine knocking was not reported to maintenance personnel which prevented an opportunity to discover the deteriorating engine condition.
Finding as to Risk:
1. All flights on the day of the accident were carried out without the oil filler cap in place. The absence of the oil filler cap could have resulted in the loss of engine oil.
Other Findings:
1. There were no current instrument flight rules charts or approach plates on board the aircraft for the intended flight.
2. The Teledyne Continental Motors Service Bulletin M84-5 addressed only the 520 series engines and did not include other gear-driven alternator equipped engines.
Final Report: