Plain, Valley

Witnesses located at a gun club reported observing the airplane make a high-speed, low pass from north to south over the club's buildings and then maneuver around for another low pass from east to west. During the second low pass, the airplane collided with a radio tower that was about 50 ft tall, and the right wing sheared off about 10 ft of the tower's top. The tower's base was triangular shaped, and each of its sides was about 2 ft long. One witness reported that the airplane remained in a straight-and-level attitude until impact with the tower. The airplane then rolled right to an almost inverted position and subsequently impacted trees and terrain about 700 ft southwest of the initial impact point. One witness reported that, about 3 to 4 years before the accident, the pilot, who was a client of the gun club, had "buzzed" over the club and had been told to never do so again. A postaccident examination of the engines and the airframe revealed no evidence of a mechanical malfunction or failure that would have precluded normal operation.

The aircraft departed Surgut on September 12 on a special flight to Saranpaul and Arbyn, carrying two pilots and five employees of the Sosvapromgeologya Company. On September 18, the crew was supposed to fly back to Surgut but due to poor weather conditions, decided to fly to Nefteyugansk. About an hour and 10 minutes into the flight, while cruising at an altitude of 700 metres, the engine temperature increased to 305° C. and the oil temperature to 90° C. In the same time, the engine lost power. The crew decided to reduce his altitude and to attempt an emergency landing when the aircraft crash landed in a field located 48 km west of Nyagan. There was no fire. All seven occupants were injured and the aircraft was damaged beyond repair.

The twin engine aircraft departed Chihuahua-General Fierro Villalobos Airport at 1352LT on a flight to Zacatecas, carrying four passengers and one pilot. It continued to the south at an altitude of 11,500 feet and a speed of 120 knots. The flight was uneventful until the pilot started the descent to Zacatecas-General Leobardo C. Ruiz. when the left engine lost power then failed shortly later. The pilot reduced his altitude and attempted an emergency landing when the aircraft crash landed in an open field located near Purisima del Maguey, some 25 km northwest of Zacatecas Airport. All five occupants evacuated safely and the aircraft was damaged beyond repair.

Few minutes after takeoff from Vilyuisk Airport, on a schedule service (flight n° PI9977) to Kyubeinde-Ugulet, while cruising at an altitude of about 400 metres, the engine overheated and lost power while the oil pressure dropped. The crew decided to return to Vilyuisk when the engine failed shortly later. The captain attempted an emergency landing in a swampy area located 26 km northwest of Vilyuisk (at N63°54.584" E121°18.048"). The main wheels got stuck in soft ground, the engine was ripped off, and the aircraft came to rest, bursting into flames. Both pilots and all 9 passengers escaped uninjured and the aircraft was totally destroyed by fire.

At 1015 Pacific Daylight Time, the de Havilland DHC-2 (Beaver) floatplane (registration CGPVB, serial number 871), operated by Air Nootka Ltd., departed Hesquiat Lake, British Columbia, with the pilot and 5 passengers for Air Nootka Ltd.’s water aerodrome base near Gold River, British Columbia. Visibility at Hesquiat Lake was about 2 ½ nautical miles in rain, and the cloud ceiling was about 400 feet above lake and sea level. Approximately 3 nautical miles west of the lake, while over Hesquiat Peninsula, the aircraft struck a tree top at about 800 feet above sea level and crashed. Shortly after the aircraft came to rest, a post-crash fire developed. All 6 persons on board survived the impact, but the pilot and 1 passenger died shortly after. A brief 406 megahertz emergency locator transmitter signal was transmitted, and a search and rescue helicopter recovered the survivors at about 1600.

The pilot was carrying out a local flight with a friend. The weather was good (CAVOK), with a westerly wind of about 12 to 15 kt. The passenger occupied the front cockpit and the pilot the rear. The engine started normally and the aircraft departed, climbing to an altitude of 1,200 ft. The pilot carried out two medium banked turns and a gentle wingover manoeuvre before entering another steep turn to the left. When established in the turn, the engine stopped and the aircraft entered a spin to the left. The pilot recovered from the spin but, due to the limited height available, could only pull out of the dive and carry out a forced landing in an isolated grass area, amongst trees and other obstacles. In doing so, the aircraft struck a ridge and furrow, which destroyed the landing gear and much of the forward fuselage. A member of the public witnessed the accident and called the emergency services, who recovered both occupants from the wreckage. The pilot and his passenger had suffered serious injuries and were transferred to hospital. There was no fire.The aircraft had recently been re-weighed. During that process, the fuel tank had been drained and the same fuel was then used to refill the tank. After that, the aircraft had flown some five hours, during which it had been refuelled twice at a licensed aerodrome. The second refuel had taken place prior to positioning the aircraft back to the private site from which the accident flight departed. It was reported that the engine had been consistently reliable. No reason for the engine failure was identified. The pilot considered that he had avoided a serious head injury because he was wearing a protective helmet. Also, he commented that he had since had discussions with others in the historic aircraft community regarding energy absorbing foam in seat pans and its potential for reducing the level of back injuries in the event of an accident.

The crew was completing a crop spraying mission in the region of Danfeng. While cruising at low altitude, the aircraft impacted tree tops, stalled and crashed in a wooded area. While the captain was seriously injured, the copilot was killed.

The crew was completing a training mission. In unknown circumstances, the single engine aircraft crashed in a prairie located near Mount Nicholas, between Queenstown and Te Anau, coming to rest upside down. Both pilots were seriously injured and the aircraft was destroyed.

Shortly after takeoff from a remote airstrip in Merugwayi, while flying in bad weather conditions, the twin engine aircraft crashed in a wilderness located in Kapingiro, near Merugwayi. All seven occupants were injured, the copilot aged 23 seriously. The aircraft was damaged beyond repair. Among passengers were several doctors who provided medical services to locals leaving in the remote district.

The pilot reported that, while the float-equipped airplane was in cruise flight about 1,200 ft above ground level, the engine made a loud noise and lost partial power, so he maneuvered the airplane to land on a nearby lake. During the approach, the engine lost total power, and the airplane descended into an area of trees before reaching the lake, which resulted in substantial damage to the wings, fuselage, and empennage. The operator reported that the engine had been overhauled (zero-timed) 31 hours before the accident. A postaccident engine examination revealed metal fragments and heavy gouging damage to the rotating components within the crankcase. The bottom portion (crankshaft end) of the n°1 linkrod and its respective bushing were missing from the n°1 linkpin; the oil sump contained metal debris consistent with heavily damaged remnants of these (and other) components. The n°2 cylinder barrel and linkrod and the n°3 linkrod showed deformation to the left (in the direction of engine rotation). Based on the damage observed in the engine, it is likely that the event that initiated the engine failure involved either the the n°1 linkrod bushing or the bottom portion of the n°1 linkrod; however, the extensive damage to these components precluded determination of the failure mode.