Survey / Patrol / Reconnaissance

Crashed in unknown circumstances 30 miles east of San Diego while completing a reconnaissance mission. All five crew members were killed.

Crashed in unknown circumstances in Bela-Bela, Limpopo. The aircraft was destroyed by a post crash fire and all three occupants were killed.

Crashed in unknown circumstances somewhere in Malawi. Occupant's fate unknown.

While trying to land on a level landing strip at Gomez Nunatak, Adelaide Island, Antarctica, the pilot made an error of judgment and landed on a hilly terrain. The aircraft collided with snow slope and came to rest. All five occupants were evacuated safely while the aircraft was damaged beyond repair and abandoned on site. Both engines and avionics were salvaged.

Shortly after a night takeoff from Puerto Cortés NAS, while climbing, the seaplane aircraft lost height and crashed into the sea. Five crew members were rescued while three others were killed.

The crew was performing a survey flight when the twin engine airplane was shot down by rebels of the Front Polisario. The wreckage was found 72 km north of Bir Moghreïn, north Mauritania (exact position 25°52'13.5" N 11°27'25.5" W). The aircraft was destroyed and all three crew members were killed.
Crew:
Lt Sidi Mohamed Ould Heyine, pilot,
Sgt Ely Ould Nafaa, navigator,
Sgt Mohamed Elhafedh Ould Zegrar Ould Khyar, mechanic.
Source: Mohamed Ould Heyine, Mauritania.
First photo: Defender at Atar Airport few weeks prior to the accident.

While approaching Yuzhno-Sakhalinsk Airport by night on a survey flight from Petropavlovsk-Kamchatsky, the crew encountered limited visibility and marginal weather conditions. At an altitude of 850 metres, the twin engine airplane struck the slope of Mt Ostraya (910 metres high) located 12,5 km from the airport. The wreckage was found three days later. Two passengers (two hydrologists) were found alive while nine other occupants have been killed.

The crew departed Lomé Airport in the morning on a patrol flight over the gulf of Guinea. En route, both engines' temperature increased and shortly later, they failed quite simultaneously. The crew reduced his altitude and attempted to ditch the aircraft that crashed into the Atlantic Ocean (international waters) about 320 km west of Annobón Island. A pilot was rescued while the second occupant died. The aircraft sank and was lost.

The Otter had taken off that day from Prince Albert on a flight to Buffalo Narrows. Six miles north of Ile-à-la-Crosse, following an engine failure, the pilot made a forced landed in the bush and the aircraft was damaged beyond economic repair. The flight had proceeded for one hour forty minutes without incident when there was a loud bang from the engine, followed by a complete power loss. Smoke was emitted into the cockpit and the pilot commenced a forced landing. Attempts to regain power were to no avail and the pilot transmitted a mayday, which was acknowledged by another aircraft. The Otter touched down in a semi-clear area in bush country in a nose high, full flap configuration. The pilot and passenger evacuated the Otter fearing a post crash fire, however none followed. They were located by a rescue party a short time after the crash.
Source: http://www.dhc-3archive.com & Karl E. Hayes.

While conducting a maritime patrol flight, the twin engine airplane crashed in unknown circumstances into the sea off the Khuriya Muriya Islands. All five occupants were killed.