Crash of a Casa 212 Aviocar in Saskatoon: 1 killed

Date & Time: Apr 1, 2011 at 1830 LT
Type of aircraft:
Operator:
Registration:
C-FDKM
Survivors:
Yes
Site:
Schedule:
Saskatoon - Saskatoon
MSN:
196
YOM:
1981
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
7400
Captain / Total hours on type:
75.00
Copilot / Total flying hours:
7800
Copilot / Total hours on type:
1800
Aircraft flight hours:
21292
Circumstances:
At 1503 Central Standard Time, the Construcciones Aeronauticas SA (CASA) C-212-CC40 (registration C-FDKM, serial number 196) operated by Fugro Aviation Canada Ltd., departed from Saskatoon/Diefenbaker International Airport, Saskatchewan, under visual flight rules for a geophysical survey flight to the east of Saskatoon. On board were 2 pilots and a survey equipment operator. At about 1814, the right engine lost power. The crew shut it down, carried out checklist procedures, and commenced an approach for Runway 27. When the flight was 3.5 nautical miles from the runway on final approach, the left engine lost power. The crew carried out a forced landing adjacent to Wanuskewin Road in Saskatoon. The aircraft impacted a concrete roadway noise abatement wall and was destroyed. The survey equipment operator sustained fatal injuries, the first officer sustained serious injuries, and the captain sustained minor injuries. No ELT signal was received.
Probable cause:
Conclusions
Findings as to Causes and Contributing Factors:
1. The right engine lost power when the intermediate spur gear on the torque sensor shaft failed. This resulted in loss of drive to the high-pressure engine-driven pump, fuel starvation, and immediate engine stoppage.
2. The ability of the left-hand No. 2 ejector pump to deliver fuel to the collector tank was compromised by foreign object debris (FOD) in the ejector pump nozzle.
3. When the fuel level in the left collector tank decreased, the left fuel level warning light likely illuminated but was not noticed by the crew.
4. The pilots did not execute the fuel level warning checklist because they did not perceive the illumination of the fuel level left tank warning light. Consequently, the fuel crossfeed valve remained closed and fuel from only the left wing was being supplied to the left engine.
5. The left engine flamed out as a result of depletion of the collector tank and fuel starvation, and the crew had to make a forced landing resulting in an impact with a concrete noise abatement wall.
Findings as to Risk:
1. Depending on the combination of fuel level and bank angle in single-engine uncoordinated flight, the ejector pump system may not have the delivery capacity, when the No. 1 ejector inlet is exposed, to prevent eventual depletion of the collector tank when the engine is operated at full power. Depletion of the collector tank will result in engine power loss.
2. The master caution annunciator does not flash; this leads to a risk that the the crew may not notice the illumination of an annunciator panel segment, in turn increasing the risk of them not taking action to correct the condition which activated the master caution.
3. When cockpit voice and flight data recordings are not available to an investigation, this may preclude the identification and communication of safety deficiencies to advance transportation safety.
4. Because the inlets of the ejector pumps are unscreened, there is a risk that FOD in the fuel tank may become lodged in an ejector nozzle and result in a decrease in the fuel delivery rate to the collector tank.
Other Findings:
1. The crew’s decision not to recover or jettison the birds immediately resulted in operation for an extended period with minimal climb performance.
2. The composition and origin of the FOD, as well as how or when it had been introduced into the fuel tank, could not be determined.
3. The SkyTrac system provided timely position information that would have assisted search and rescue personnel if position data had been required.
4. Saskatoon police, firefighters, and paramedics responded rapidly to the accident and provided effective assistance to the survivors.
Final Report:

Crash of a Beechcraft 99 in Prince Albert

Date & Time: Apr 23, 2003 at 1802 LT
Type of aircraft:
Operator:
Registration:
C-FDYF
Survivors:
Yes
Schedule:
Saskatoon-Prince Albert
MSN:
U-110
YOM:
1969
Flight number:
9T602
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:

On approach, while flying at 1,200 feet, the pilot lost control of aircraft which suddenly pitch down. Few seconds later, the captain recovered control and made an emergency landing 11 km off the airport. No injuries among occupants but the aircraft was destroyed.

Crash of a De Havilland DHC-2 Beaver in Saskatoon

Date & Time: May 29, 1997 at 1200 LT
Type of aircraft:
Operator:
Registration:
C-FOCS
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
0054
YOM:
1949
Country:
Crew on board:
1
Crew fatalities:
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
11000
Captain / Total hours on type:
5000.00

Crash of an Avro 652A Anson V in Buffalo Narrows: 8 killed

Date & Time: Jan 6, 1955
Type of aircraft:
Operator:
Registration:
CF-FVZ
Survivors:
No
Schedule:
Saskatoon – Buffalo Narrows
MSN:
MDF-297
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
On final approach to Buffalo Narrows Airport, the twin engine aircraft went out of control and crashed in flames. All eight occupants, among them five children and the pilot Stuart Millar were killed. It was reported by locals that the accident was the result of a bird strike on final.

Crash of a North American B-25J-30/32-NC Mitchell near Pitt Lake: 5 killed

Date & Time: Jan 29, 1953
Operator:
Registration:
5246
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Saskatoon – Vancouver
MSN:
108-37421
YOM:
1944
Country:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
While flying northeast of Vancouver, the twin engine aircraft hit a snowy mountain slope located near Widgeon Lake, west of Pitt Lake. Debris were found few days later and all five crewmen were killed.
Crew:
Flying Officer Murray Donald Hill,
Flying Officer Jack Wayne McIntosh,
Flying Officer Ernest Dorph Thygesen, 2.

Crash of a De Havilland DH.60X Moth in Saskatoon

Date & Time: Apr 22, 1936
Type of aircraft:
Registration:
G-CAKO
Flight Type:
Survivors:
Yes
Schedule:
Saskatoon - Saskatoon
MSN:
567
YOM:
1928
Country:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crew was performing a circular training flight in Saskatoon Airport. After completing several manoeuvre, the student pilot attempted the approach when the single engine aircraft landed heavily and crashed. Both occupants were injured and the aircraft was damaged beyond repair.
Probable cause:
Wrong approach configuration on part of the student pilot.

Crash of a De Havilland DH.60X Moth in Warman: 1 killed

Date & Time: Oct 8, 1929
Type of aircraft:
Registration:
G-CAKG
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Saskatoon - Saskatoon
MSN:
462
YOM:
1928
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
Pilot Theodore Helps was performing a training flight in the region of Warman. In flight, while performing a loop, a wing strut failed and the aircraft went out of control and crashed in a field. The pilot was killed.
Probable cause:
Wing strut failure.