Crash of a De Havilland DHC-3 Otter in San Juan: 1 killed

Date & Time: Oct 29, 1986 at 1310 LT
Type of aircraft:
Operator:
Registration:
N778L
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
San Juan - San Juan
MSN:
83
YOM:
1955
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
8000
Aircraft flight hours:
6290
Circumstances:
Witnesses stated that the aircraft used most of the runway to takeoff, reached an approximately altitude of 60 feet, then pulled up to clear an embankment. However, the aircraft struck a tall palm tree and crashed between 2 roads, near an intersection, where the roads merged. The cargo was removed from the acft and weighed. Computations showed that the maximum allowable gross weight of the acft was exceeded by approximately 1,928 lbs. No preimpact part failure or malfunction was evident. The passenger was injured and the pilot was killed.
Probable cause:
Occurrence #1: in flight collision with object
Phase of operation: takeoff - initial climb
Findings
1. (c) preflight planning/preparation - inadequate - pilot in command
2. (c) aircraft weight and balance - exceeded - pilot in command
3. (f) object - tree(s)
4. Clearance - not attained
----------
Occurrence #2: in flight collision with terrain/water
Phase of operation: descent - uncontrolled
Final Report:

Crash of a De Havilland DHC-3 Otter near Pickle Lake

Date & Time: Sep 2, 1986
Type of aircraft:
Registration:
C-FBER
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
86
YOM:
1955
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Few minutes after takeoff from Pickle Lake, while in cruising altitude, the pilot hear a loud bang. The engine lost power then caught fire and failed. Unable to reach the nearest airport, the pilot attempted an emergency landing when the aircraft crashed in a swampy scrub, bursting into flames. Both occupants escaped uninjured while the aircraft was destroyed.
Probable cause:
The engine reduction gear assembly had failed as the result of lack of lubrication.

Crash of a De Havilland DHC-3 Otter near Goose Bay: 4 killed

Date & Time: Mar 24, 1986 at 0955 LT
Type of aircraft:
Registration:
C-FAGM
Flight Phase:
Survivors:
Yes
Schedule:
Snegamook Lake - Goose Bay
MSN:
400
YOM:
1961
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
13258
Circumstances:
A wheel/ski-equipped DHC-3 Otter aircraft was on the return leg of a charter flight to Snegamook Lake to retrieve a hunting party of four, along with their hunting gear and bounty of several hundred ptarmigan. It departed Snegamook Lake at 09:15. After takeoff, the engine began to run rough but improved somewhat when the power was reduced for cruising. As the aircraft was approaching Nipishish Lake, the pilot reported to company dispatch that the engine was again running rough, but he was able to maintain altitude, and he would follow the Crooked River toward Goose Bay in case a precautionary landing became necessary. Three minutes later, C-FAGM called dispatch again, advising them that he was intending to land on a large area on the Crooked River. He also indicated that there was an odour of smoke in the aircraft. The aircraft was in a nose-down, left- bank attitude, with the flaps fully extended and the skis retracted when it struck the frozen surface of the river. The Otter bounced clear of the surface, turned left came to rest in an upright position.
Probable cause:
It was determined that a fatigue-initiated crack in the number nine cylinder head caused the engine to run rough and lose power. While the pilot was manoeuvring for the precautionary landing in whiteout conditions, the aircraft crashed. At impact, the fuel cells ruptured, and a fire erupted which destroyed the aircraft.

Crash of a De Havilland DHC-3 Otter in Lake Helen

Date & Time: Jul 14, 1985
Type of aircraft:
Operator:
Registration:
C-FIOD
Flight Phase:
Survivors:
Yes
MSN:
6
YOM:
1953
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from lake Helen, the pilot raised the flaps and reduced the speed when the aircraft stalled and crashed in a wooded area, bursting into flames. Both occupants escaped with minor injuries while the aircraft was destroyed by a post crash fire.

Crash of a De Havilland DHC-3T Otter in Seattle

Date & Time: Dec 19, 1984 at 1108 LT
Type of aircraft:
Registration:
N4247A
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Seattle - Seattle
MSN:
421
YOM:
1964
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
8500
Captain / Total hours on type:
15.00
Aircraft flight hours:
7445
Circumstances:
Aircraft was performing test flight maneuvers when problems with the modified fuel system occurred. Ice blocking a fuel vent line caused a partial collapse of the main (engine feed) fuel cell which produced an erroneous fuel quantity reading. In addition, the main tank overflow shut off valve was leaking, so tank overflow occurred. The fuel overflow caution light illuminated and auxiliary tank fuel pump feed to main automatically shut down. Due to miscalibration, this system overrode pilot attempts to restart aux fuel pumps. Pilot remained in test area troubleshooting rather than immediate return to base, finally noted main tank gage continuing to read 'full.' En route to Boeing Field, fuel starvation occurred. Pilot opted to attempt forced landing in small athletic field in residential area rather than ditch in puget sound. The aircraft touched down in intended landing area, then bounced across an adjacent street. The arresting action of telephone wires on the vertical fin brought the aircraft to rest in a residential backyard. All three occupants were injured, one seriously.
Probable cause:
Occurrence #1: airframe/component/system failure/malfunction
Phase of operation: maneuvering
Findings
1. (c) fuel system, vent - blocked (total)
2. (f) fuel system, tank - distorted
3. (f) engine instruments, fuel quantity gage - false indication
4. (f) fuel system, fuel shutoff - leak
----------
Occurrence #2: airframe/component/system failure/malfunction
Phase of operation: maneuvering
Findings
5. Fuel system, pump - switched off
6. Remedial action - not possible
----------
Occurrence #3: loss of engine power (total) - nonmechanical
Phase of operation: cruise
Findings
7. (f) precautionary landing - delayed - pilot in command
8. (f) fuel supply - misjudged - pilot in command
9. (c) fluid, fuel - starvation
----------
Occurrence #4: forced landing
Phase of operation: descent - emergency
----------
Occurrence #5: in flight collision with terrain/water
Phase of operation: landing
Findings
10. (f) terrain condition - none suitable
Final Report:

Crash of a De Havilland DHC-3 Otter in Two Bridge Lake: 5 killed

Date & Time: Sep 18, 1982
Type of aircraft:
Registration:
C-FDJA
Flight Phase:
Survivors:
No
Site:
Schedule:
Tyee Lake - Tatlatui Lake
MSN:
459
YOM:
1965
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The single engine airplane was conducting a taxi flight from Tyee Lake near Smithers and Tatlatui Lake, carrying four passengers and a pilot bound for a hunting camp. About 10 minutes after takeoff, the single engine airplane entered a valley when the pilot saw obstacles and initiated to leave the area. While performing a steep turn, the aircraft stalled and crashed in a dense wooded area, bursting into flames. The wreckage was found off track about 25 km northeast of Smithers. All five occupants were killed.

Crash of a De Havilland DHC-3 Otter near Flin Flon

Date & Time: Sep 16, 1981
Type of aircraft:
Registration:
CF-DRC
Flight Phase:
Survivors:
Yes
Schedule:
Barrier Lake - Flin Flon
MSN:
295
YOM:
1959
Country:
Crew on board:
1
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
6800
Circumstances:
The single engine airplane was completing a charter flight from Barrier Lake, Manitoba, to Flin Flon, with one pilot and eight fishermen on board. It was being flown at low altitude with reduced power settings because of suspected low fuel and headwinds. The engine lost power due to fuel starvation and the pilot attempted an emergency landing when the airplane struck trees and crash landed in dense bush near Precipice Lake, Manitoba, about 10 miles north of Flin Flon. All 10 occupants were uninjured while the aircraft was destroyed.
Photo and source: https://www.dhc-3archive.com/DHC-3_295.html - Karl E. Hayes
Probable cause:
Loss of engine power due to fuel starvation.

Crash of a De Havilland DHC-3 Otter near Lac des Chats: 3 killed

Date & Time: Sep 2, 1981 at 1600 LT
Type of aircraft:
Operator:
Registration:
9417
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Montreal - Montreal
MSN:
396
YOM:
1960
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
The crew departed Montreal-Saint-Hubert Airport on a training mission. While cruising at low altitude, the airplane stalled and crashed in a wooded area, bursting into flames. The wreckage was found near Lac des Chats. All three occupants were killed.
Probable cause:
It was determined that the pilot-in-command failed to maintain sufficient airspeed while manoeuvring at low level, resulting in an aerodynamic stall.

Crash of a De Havilland CC-123 Otter on Slide Mountain: 4 killed

Date & Time: Dec 19, 1980
Type of aircraft:
Operator:
Registration:
9407
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Norfolk - Newburgh - Ottawa
MSN:
367
YOM:
1960
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
En route from Newburgh-Stewart to Ottawa, the single engine airplane crashed in unknown circumstances on Slide Mountain, State of New York. The wreckage was found two days later and all four occupants were killed. The crew was returning to Ottawa following an exchange course at Norfolk NAS, Virginia.
Occupants:
Maj Eugene Ross,
Cpt Gilles Dessureault,
Cpt Jean Petit,
Lt Col D. R. Lawrence.

Crash of a De Havilland DHC-3 Otter near Togiak: 2 killed

Date & Time: Aug 3, 1980 at 1615 LT
Type of aircraft:
Operator:
Registration:
N433GR
Flight Phase:
Survivors:
Yes
Site:
Schedule:
Togiak – Dillingham
MSN:
291
YOM:
1959
Location:
Crew on board:
1
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
2
Captain / Total flying hours:
3400
Captain / Total hours on type:
300.00
Circumstances:
Few minutes after takeoff from Togiak while on a taxi flight to Dillingham, the pilot encountered foggy conditions in a valley. He attempted to make a climb turn when the airplane struck the slope of a mountain. The pilot and a passenger were killed while seven other occupants were injured. The aircraft was totally destroyed.
Probable cause:
Controlled collision with ground in normal cruise after the pilot continued VFR flight into adverse weather conditions. The following contributing factors were reported:
- Low ceiling,
- Fog.
Final Report: