Landing (descent or approach)

According to the cockpit voice recorder (CVR), during cruise flight, the unqualified pilot-rated passenger was manipulating the aircraft controls, including the engine controls, under the supervision and direction of the private pilot. After receiving a descent clearance to 3,000 feet mean sea level (msl), the pilot told the pilot-rated passenger to reduce engine power to maintain a target airspeed. The cockpit area microphone subsequently recorded the sound of both engines spooling down. The pilot recognized that the pilot-rated passenger had shutdown both engines after he retarded the engine throttles past the flight idle stops into the fuel cutoff position. Specifically, the pilot stated "you went back behind the stops and we lost power." According to air traffic control (ATC) radar track data, at the time of the dual engine shutdown, the airplane was located about 18 miles southwest of the destination airport and was descending through 6,700 feet msl. The pilot reported to the controller that the airplane had experienced a dual loss of engine power, declared an emergency, and requested radar vectors to the destination airport. As the flight approached the destination airport, the cockpit area microphone recorded a sound similar to an engine starter spooling up; however, engine power was not restored during the attempted restart. A review of the remaining CVR audio did not reveal any evidence of another attempt to restart an engine. The CVR stopped recording while the airplane was still airborne, with both engines still inoperative, while on an extended base leg to the runway. Subsequently, the controller told the pilot to go-around because the main landing gear was not extended. The accident airplane was then observed to climb and enter a right traffic pattern to make another landing approach. Witness accounts indicated that only the nose landing gear was extended during the second landing approach. The witnesses observed the airplane bounce several times on the runway before it ultimately entered a climbing right turn. The airplane was then observed to enter a nose low, rolling descent into a nearby residential community. The postaccident examinations and testing did not reveal any anomalies or failures that would have precluded normal operation of the airplane. Although the CVR did not record a successful engine restart, the pilot was able to initiate a go-around during the initial landing attempt, which implies that he was able to restart at least one engine during the initial approach. The investigation subsequently determined that only the left engine was operating at impact. Following an engine start, procedures require that the respective generator be reset to reestablish electrical power to the Essential Bus. If the Essential Bus had been restored, all aircraft systems would have operated normally. However, the battery toggle switch was observed in the Standby position at the accident site, which would have prevented the Essential Bus from receiving power regardless of whether the generator had been reset. As such, the airplane was likely operating on the Standby Bus, which would preclude the normal extension of the landing gear. However, the investigation determined that the landing gear alternate extension handle was partially extended. The observed position of the handle would have precluded the main landing gear from extending (only the nose landing gear would extend). The investigation determined that it is likely the pilot did not fully extend the handle to obtain a full landing gear deployment. Had he fully extended the landing gear, a successful single-engine landing could have been accomplished. In conclusion, the private pilot's decision to allow the unqualified pilot-rated passenger to manipulate the airplane controls directly resulted in the inadvertent dual engine shutdown during cruise descent. Additionally, the pilot's inadequate response to the emergency, including his failure to adhere to procedures, resulted in his inability to fully restore airplane systems and ultimately resulted in a loss of airplane control.

The twin engine aircraft departed Belém-Val de Cans-Júlio Cezar Ribeiro Airport at 1907LT on a flight to Almeirim, carrying one pilot and nine employees of a company taking part to the construction of a hydro-electric station in the area. Following an eventful flight at FL85, the pilot started the descent to Almeirim and contacted ground at 2023LT. On final approach by night, the aircraft descended too low, impacted ground and crashed 5 km short of runway, bursting into flames. The aircraft was destroyed and all 10 occupants were killed.

Aircraft was destroyed when it impacted rising terrain about 10 miles east of Aleknagik, Alaska. The airplane was operated as Flight 51, by Alaska Central Express, Inc., Anchorage, Alaska, as an on demand cargo flight under the provisions of 14 Code of Federal Regulations (CFR) Part 135. The airline transport certificated captain and the commercial certificated first officer sustained fatal injuries. Instrument meteorological conditions were reported in the area at the time of the accident, and the airplane was operating on an instrument flight rules (IFR) flight plan. The flight had originally departed Anchorage about 0544, and made a scheduled stop at King Salmon, Alaska, before continuing on to the next scheduled stop, Dillingham, Alaska. According to Federal Aviation Administration (FAA) personnel, as the airplane approached Dillingham, the flight crew requested the RNAV GPS 19 instrument approach to the Dillingham Airport about 0757 from controllers at the Anchorage Air Route Traffic Control Center (ARTCC). The ARTCC specialist on duty subsequently granted the request by issuing the clearance, with instructions to proceed direct to the Initial Approach Fix (IAF) to begin the approach, and to maintain an altitude of 2,000 feet or above. A short time later the flight crew requested to enter a holding pattern at the IAF so that they could contact the Flight Service Station (FSS) for a runway conditions report, and the ARTCC specialist granted that request. The ARTCC specialist then made several attempts to contact the aircraft, but was unsuccessful and subsequently lost radar track on the aircraft. When the airplane failed to arrive at the Dillingham Airport, ARTCC personnel initiated a radio search to see if the airplane had diverted to another airport. Unable to locate the airplane, the FAA issued an alert notice (ALNOT) at 0835. Search personnel from the Alaska State Troopers, Alaska Air National Guard, and the U.S. Coast Guard, along with several volunteer pilots, were dispatched to conduct an extensive search effort. Rescue personnel aboard an Air National Guard C-130 airplane tracked 406 MHz emergency locater transmitter (ELT) signal to an area of mountainous terrain about 20 miles north of Dillingham, but poor weather prohibited searchers from reaching the site until the next morning. Once the crew of a HH-60G helicopter from the Air National Guard's 210th Air Rescue Squadron, Anchorage, Alaska, reached the steep, snow and ice-covered site, they confirmed that both pilots sustained fatal injuries.

The aircraft was engaged in a bird control mission over the center of Denmark and departed Billund Airport in the afternoon with one passenger and one pilot on board. While returning to Roskilde, on approach to runway 03, the pilot initiated a go-around procedure due to the presence of a slower aircraft on the runway. While climbing, the twin engine aircraft stalled and crashed near runway 03. Both occupants were killed.

The twin engine aircraft departed Lima-Jorge Chávez Airport at 0625LT on a charter flight to Pias, carrying two pilots and seven employees of the Peruvian company MARSA (Minera Aurífera Retamas) en route to Pias gold mine. On approach to Pias Airport, the crew encountered limited visibility due to foggy conditions. Heading 320° on approach, the crew descended too low when the aircraft collided with power cables, stalled and crashed on the slope of a mountain located 4,5 km from the airport, bursting into flames. The aircraft was destroyed by impact forces and a post crash fire and all 9 occupants were killed.

The aircraft was completing a cargo flight from Kananga to Goma with an intermediate stop in Lodja, carrying four passengers, 6 crew members and a load of various goods. On final approach to Goma Airport Runway 36, the crew encountered poor weather conditions with limited visibility due to heavy rain falls. On final, the aircraft contacted the roof of a house and crashed in the garden of a residential area, coming to rest upside down. Three passengers were seriously injured while seven other occupants were killed.

The crew was performing a humanitarian flight on behalf of the United Nations Organisation (UNO). Upon landing at Wau Airport, the nose gear collapsed. The aircraft slid on runway for few dozen metres before coming to rest, bursting into flames. Both pilots evacuated safely and the aircraft was partially destroyed by fire.

The pilot reported that he had added fuel at the previous fuel stop and that he was using a fuel totalizer to determine the quantity of fuel onboard. After climbing to a cruise altitude of 14,000 feet above ground level, he discovered that the fuel mixture control was frozen and that he was unable to lean the mixture to a lower fuel flow setting. The pilot reported that because of the increased fuel consumption, he briefly considered an en route stop for additional fuel but decided to continue. During descent, the airplane experienced a complete loss of power in both engines, and the pilot made an emergency off-field, gear-up landing about 7 miles from the destination. The airplane impacted terrain and thick scrub trees, which resulted in substantial damage to both wings, both engine mounts, and the fuselage. A postaccident examination found that only a trace of fuel remained. The pilot also reported that there was no mechanical malfunction or failure and that his inadequate fuel management was partly because he had become overconfident in his abilities after 50 years of flying.

On final approach to Donetsk-Sergei Prokofiev Airport, during the last segment, the aircraft banked right to a angle of 48°, causing the right wing to struck the ground. The aircraft overturned and crashed in a grassy area to the left of runway 08, coming to rest upside down. Five passengers were killed while all other occupants were injured. The aircraft was destroyed. It was performing a charter flight from Odessa with 44 football fans on their way to a match between Shakhtar Donetsk and Borussia Dortmund. At the time of the accident, the visibility was poor due to the night and foggy conditions. The horizontal visibility was reported to be 250 metres with an RVR of 750 metres for runway 08 and vertical visibility of 200 feet.

Following an uneventful flight from Sialkot, the crew completed the approach to Muscat-Seeb Runway 26L. After touchdown, while decelerating, the left main gear collapsed, causing the left engine to struck the ground. The aircraft slid for few dozen metres before coming to rest on the left edge of the runway. All 114 occupants evacuated uninjured while the aircraft was damaged beyond repair.