Airport (less than 10 km from airport)

The aircraft departed runway 24C at Moscow-Sheremetyevo Airport at 1803LT on a schedule service to Murmansk. Few minutes after takeoff, while climbing to an altitude of 10,000 feet, the crew encountered problems with the electrical system and informed ATC about an emergency situation via the transponder codes 7700 because communication systems were unserviceable. The crew initiated a circuit to return to the airport, continued the approach to runway 24L. On approach at an altitude between 900 and 1,100 feet, the windshear warning system sounded five times 'Go around. Windshear ahead'. From a height of 80 m (260 ft) above ground level, the aircraft descended below the glide path and at a height of 55 m (180 ft) the TAWS warning sounded: "Glide Slope." From that moment on the airspeed increased to 170 knots. At 18:30 the aircraft overflew the runway threshold and touched down at a distance of 900 m past the threshold at a speed of 158 knots. Touchdown occurred at a g-force of at least 2.55g with a subsequent bounce to a height of about 2 m. After two seconds the aircraft landed again on the nose landing gear with a vertical load 5.85g, and bounced to a height of 6 m. The third landing of the aircraft occurred at a speed of 140 knots with a vertical overload of at least 5g. This caused a rupture of the wing structure and fuel lines. The aircraft caught fire, went out of control, veered off runway to the right and came to rest in a grassy area, bursting into flames. The aircraft was destroyed by fire. 37 occupants were evacuated while 41 people, among them a crew member, were killed.

The pilot was performing a personal cross-country flight. While en route to the intended destination, the pilot contacted air traffic control to report that the airplane was having a fuel pump issue and requested to divert to the nearest airport. The pilot stated that the request was only precautionary and did not declare an emergency during the flight; he provided no further information about the fuel pump. As the airplane approached the diversion airport, witnesses observed the airplane flying low and rolling to the left just before impacting terrain, after which a postcrash fire ensued. An examination of the airframe revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation. A postaccident examination and review of recorded data indicated that the left engine was secured and in the feather position, and that the right engine was operating at a high RPM setting. The left engine-driven fuel pump was found fractured. Further examination of the fuel pump revealed fatigue failure of the pressure relief valve. The fatigue failure initiated in upward bending on one side of the valve disk and progressed around both sides of the valve stem. As the cracks grew, the stem separated from the disk on one side and began to tilt in relation to the disk and the valve guide due to the non-symmetric support, which caused the lower end of the stem to rub against the valve guide, creating wear marks. The increasing stem tilt would have impinged against the valve guide, and the valve might have begun to stick in the closed position. If the valve were stuck in the closed position, it would not be able to open, and the outlet fuel pressure could rise above the set point pressure. Because the pump was driven by the engine, there would not be a way for the pilot to shut it off, disconnect it, or bypass it. Instead, the fuel pressure would continue to rise until the valve were to unstick. Thus, the pilot was likely experiencing variable fuel pressure as the valve became stuck and unstuck. Examination of the spring seat and the diaphragm plate, which were in contact with each other in the fuel pump assembly, revealed wear marks on the surface of each component, with one mark on the diaphragm plate and two wear marks on the spring seat. The two wear marks on the spring seat were distinct features separated by material with no wear indications in between. The only way that these wear marks could have occurred were if the spring seat was separated from the diaphragm plate and reinstalled in a different orientation. Thus, it is likely that the pilot had encountered a fuel pump problem before the accident flight and that someone tried to troubleshoot the problem. The last radar data point indicated that the airplane was traveling at a groundspeed of about 98 knots, and had passed north of the airport, traveling to the southwest. The minimum control speed for the airplane with single-engine operation was 88 knots. However, it is likely that if the pilot initiated a left turn back toward the airport, that the right engine torque and the 14 knot wind with gusts to 24 knots would have necessitated a higher speed. Because appropriate control inputs and airspeed were not maintained, the airplane rolled in the direction of the feathered engine (due to the left fuel pump problem), resulting in a loss of control. The pilot's toxicology report was positive for cetirizine, sumatriptan, gabapentin, topiramate, and duloxetine. All of these drugs act in the central nervous system and can be impairing alone or in combination. Although this investigation could not determine the reason(s) for the pilot's use of these drugs, they are commonly used to treat chronic pain syndromes or seizures. It is likely that the pilot was experiencing some impairment because of multiple impairing medications and was unable to successfully respond to the in-flight urgent situation and safely land the airplane.

The single engine airplane departed Ust-Nera on a cargo flight to Vyun, carrying two pilots and a load of various equipment destined for the employees of a local gold mine. Upon landing on an unprepared terrain, the undercarriage collapsed. The airplane slid on its belly and came to rest. Both pilots escaped uninjured and the aircraft was damaged beyond repair. The accident occurred at location N 65° 54' E 138° 20'.

On 24 April 2019, the Keewatin Air LP Beechcraft B200 aircraft (registration C‑FRMV, serial number BB979), equipped to perform medical evacuation flights, was conducting an instrument flight rules positioning flight (flight KEW202), with 2 flight crew members and 2 flight nurses on board, from Winnipeg/James Armstrong Richardson International Airport, Manitoba, to Rankin Inlet Airport, Nunavut, with a stop at Churchill Airport, Manitoba. At 1814 Central Daylight Time, when the aircraft was cruising at flight level 250, the flight crew declared an emergency due to a fuel issue. The flight crew diverted to Gillam Airport, Manitoba, and initiated an emergency descent. During the descent, both engines flamed out. The flight crew attempted a forced landing on Runway 23, but the aircraft touched down on the frozen surface of Stephens Lake, 750 feet before the threshold of Runway 23. The landing gear was fully extended. The aircraft struck the rocky lake shore and travelled up the bank toward the runway area. It came to rest 190 feet before the threshold of Runway 23 at 1823:45 Central Daylight Time. None of the occupants was injured. The aircraft sustained substantial damage. The 406 MHz emergency locator transmitter activated. Emergency services responded. There was no fire.

The Cessna 551 Citation II/SP corporate jet took off at 13:30 local time from Reichelsheim Airfield, Germany, for a training flight at Siegerland Airport. It was a training flight to acquire the type rating for the aircraft. The right pilot's seat was occupied by the pilot in command, who was deployed on this flight as a flight instructor. The student pilot, as co-pilot, sat on the left pilot seat and was the pilot flying. For the co-pilot it was the second flight day of his practical training program on the Cessna 551 Citation II/SP. The day before, he had already completed about three flying hours on the plane. At Siegerland Airport, three precision approaches to runway 31 were carried out with the help of the Instrument Landing System (ILS). After the third landing, the tower, due to the changed wind, turned the landing direction to runway 13. The cockpit crew therefore rolled the aircraft to the end of the runway, turned and took off at 14:34 from runway 13. This was followed by a left-hand circuit at an altitude of 3,500 ft AMSL. The approach to runway 13 took place under visual flight conditions. According to both pilots, the checklists were processed during the circuit and the aircraft was prepared for landing on runway 13. In the final approach, the landing configuration was then established and the landing checklist performed. The copilot reported that shortly before the landing the speed decreased, the aircraft flew too low and the approach angle had to be corrected. He pushed the engine thrust levers forward to the stop. The pilot in command supported this action by also pushing the engine thrust levers forward with his hand. However, according to the pilot in command, the remaining time to touch down on the runway was no longer sufficient for the engines to accelerate to maximum speed in order to deliver the corresponding thrust. He also described that the aircraft had been in the stall area at that time. However, he had not noticed a stall warning. At 14:42, with the landing gear extended, the aircraft touched down in the grass in front of the asphalt area of runway 13. The left main landing gear buckled and damaged the tank of the left wing. The right main landing gear also buckled, the tank on the right side remained undamaged. The kerosene escaping from the left wing ignited and a fire broke out. The aircraft burned and slipped along runway 13 on the folded landing gear, the underside of the airframe and the extended landing flaps until it came to a standstill after a distance of approx. 730 m from runway threshold 13. After the plane had come to a standstill on the runway, the copilot noticed flames on the left side of the plane. The pilot switched off both engines. Then both pilots left the plane via the emergency exit door on the right side. The pilots were not injured.

The pilot began the takeoff roll in visual meteorological conditions. The airplane was airborne about 1,300 ft down the runway, which was about 75% of the normal ground roll distance for the airplane’s weight and the takeoff environment. About 2 seconds after rotation, the airplane rolled left. Three seconds later, the airplane had reached an altitude of about 80 ft above ground level and was in a 90° left bank. The nose then dropped as the airplane rolled inverted and struck the ground in a right-wing-low, nose-down attitude. The airplane was destroyed. Postaccident examination did not reveal any anomalies with the airframe or engines that would have precluded normal operation. The landing gear, flap, and trim positions were appropriate for takeoff and flight control continuity was confirmed. The symmetry of damage between both propeller assemblies indicated that both engines were producing equal and high amounts of power at impact. The autopsy revealed no natural disease was present that could pose a significant hazard to flight safety. Review of surveillance video footage from before the accident revealed that the elevator was in the almost full nose-up (or trailing edge up) position during the taxi and the beginning of the takeoff roll. Surveillance footage also showed that the pilot did not perform a preflight inspection of the airplane or control check before the accident flight. According to the pilot’s friend who was also in the hangar, as the accident pilot was pushing the airplane back into his hangar on the night before the accident, he manipulated and locked the elevator in the trailing edge up position to clear an obstacle in the hangar. However, no evidence of an installed elevator control lock was found in the cabin after the accident. The loss of control during takeoff was likely due to the pilot’s use of an unapproved elevator control lock device. Despite video evidence of the elevator locked in the trailing edge up position before the accident, an examination revealed no evidence of an installed control lock in the cabin. Therefore, during the night before the accident, the pilot likely placed an unapproved object between the elevator balance weight and the trailing edge of the horizontal stabilizer to lock the elevator in the trailing edge up position. The loss of control was also due to the pilot’s failure to correctly position the elevator before takeoff. The pilot’s friend at the hangar also reported that the pilot was running about one hour late; the night before, he was trying to troubleshoot an electrical issue in the airplane that caused a circuit breaker to keep tripping, which may have become a distraction to the pilot. The pilot had the opportunity to detect his error in not freeing the elevator both before boarding the airplane and again while in the airplane, either via a control check or detecting an anomalous aft position of the yoke. The pilot directed his attention to the arrival of a motorbike in the hangar alley shortly after he pulled the airplane out of the hangar, which likely distracted the pilot and further delayed his departure. He did not conduct a preflight inspection of the airplane or control check before the accident flight, due either to distraction or time pressure.

On 14 April 2019, around 0322Hrs, Aircraft Industries' L410UPV-E20, registration 9NAMH, owned and operated by Summit Air Pvt. Ltd. met with an accident at Tenzing-Hillary Airport, Lukla when it veered right and excurred the runway during take-off roll from runway 24. The aircraft first collided with Manang Air's helicopter, AS350B3e, registration 9N-ALC, with its rotor blade running on idle power and then with Shree Airlines' helicopter, AS350B3e, registration 9N-ALK just outside the inner perimeter fence of the aerodrome into the helipad before coming to a stop. The PIC and Cabin Crew of 9N-AMH survived the accident, whereas the Co-pilot and one security personnel on ground were killed on the spot. One more security personnel succumbed to injury later in hospital during the course of treatment. 9N-AMH and 9N-ALC both were substantially damaged by impact forces. There was no post-crash fire. Prior to the accident the aircraft had completed 3 flights on Ramechhap-Lukla-Ramechhap sector. According to PIC, he was in the left seat as the pilot monitoring (PM) and the co-pilot, in the right seat was the pilot flying (PF). According to CCTV footages, the aircraft arrived at the apron from VNRC to VNLK at 0315Hrs and shut its LH engine. The PIC started the LH engine at about 0318 Hrs after unloading cargo and passengers. At 0322:30 Hrs, the PIC aligned the aircraft with the runway at the runway threshold 24 and then handed over the controls to the co-pilot for the take-off roll. The take-off roll commenced at 0322:50 Hrs. CCTV footage captured that within 3 seconds the aircraft veered right and made an excursion. The aircraft exited the runway and travelled about 42.8 ft across the grassy part on right side of runway 24, before striking the airport inner perimeter fence. It then continued to skid for about 43 ft, into the upper helipad, crashing into 9N-ALC. Eye witnesses statements, CCTV footages and initial examination of the wreckage showed that rotor blades of helicopter 9N-ALC were on idle when RH wing of the aircraft swept two security personnel (on ground) before slashing its rotor shaft. The moving rotors cut through the cockpit on the right side slaying the Co-pilot immediately. The helicopter toppled onto the lower helipad 6 ft below. The LH wing of the aircraft broke the skid of helicopter 9NALK and came to a halt with toppled 9N-ALC beneath its RH main wheel assembly. Due to 2impact, 9N-ALK shifted about 8 ft laterally and suffered minor damages. There was no post-crash fire. The PIC switched off the battery and came out of the aircraft through emergency exit along with the cabin crew. The captain of the helicopter 9N-ALC was rescued immediately. 9N-ALC's crew sustained a broken tail-bone whereas 9N-ALK's crew escaped without sustaining major injuries. All three deceased were Nepalese citizens. Aircraft 9N-AMH and helicopter 9N-ALC were substantially damaged while the helicopter 9N-ALK endured partial damages.

The airplane was engaged in the exercise 'ECCAragon2019' organized by the Aerial Evacuation Unit of the Air Force and was carrying six passengers and a crew of four on behalf of the 35th Aerial Unit based at Getafe AFB. Upon touchdown on runway 27 (850 meters long), the airplane bounced twice then landed firmly. It veered to the right and struck the concrete taxiway passing to the north apron. Unable to stop within the remaining distance, the airplane overran, struck trees and came to rest in a wooded area. All 10 occupants were slightly injured and evacuated.

The twin engine airplane departed Sorocaba-Estadual Bertram Luiz Leupolz Airport at 2300LT on a flight to Palmas, Tocantins, carrying three passengers and a crew of two. Few minutes after takeoff, the crew encountered technical difficulties and was cleared to divert to Campinas-Viracopos Airport. On final, he realized he could not make it so he attempted an emergency landing in a prairie located about 6 km short of runway 15 threshold. The wreckage was found less than a km from the Jardim Bassoli condominium and all five occupants, slightly injured, were evacuated. The aircraft was damaged beyond repair.

At 1357 hrs the airplane had taken off from Cannes-Mandelieu Airport, France, to a private flight to Egelsbach Airfield, Germany. On board were the pilot and two passengers. According to the flight plan cruise flight was planned for Flight Level (FL)260. At 1519:03 hrs the pilot established contact with Frankfurt Radar, and informed the controller that the airplane was in descent to FL60 towards reporting point UBENO. The radar recordings show that the airplane was flying towards 335° and transmitted the transponder code 4065. The radar controller issued the descent clearance to 4,000 ft AMSL and conveyed a QNH of 1,020 hPa. At 1519:25 hrs the controller addressed the pilot: “[…] proceed direct DELTA, runway zero eight in use.” The pilot acknowledged the clearance. At 1520:20 hrs the controller instructed the pilot to descend to 3,500 ft AMSL. After the pilot had acknowledged the controller’s question, the change of flight rules from IFR to VFR was conducted at 1521 hrs about 16 NM south of Egelsbach Airfield. At the time, the airplane was at about 5,000 ft AMSL with a ground speed of approximately 240 kt. At 1522:34 hrs, the airplane was at 3,500 ft AMSL and about 14 NM from the airfield, the pilot established radio contact with Egelsbach Information with the words: “[…] inbound DELTA, descending VFR.” The Flugleiter (A person required by German regulation at uncontrolled aerodromes to provide aerodrome information service to pilots) answered: “Hello […] runway zero eight, QNH one zero two zero, squawk four four four one.” The pilot acknowledged the landing direction and the QNH. The communicated transponder code was not acknowledged, and did not change during the remainder of the flight, according to the radar recording. At 1524:34 hrs the Flugleiter gave the pilot the hint: “[…] the maximum altitude in this area is one thousand five hundred feet.” The pilot answered: “Roger, continue descent […].” At this time, altitude was still about 2,000 ft AMSL. According to the radar recording, at 1524:45 hrs the airplane turned right in northern direction toward the DELTA approach path to runway 08 of Egelsbach Airfield. Altitude was about 1,900 ft AMSL, and ground speed 170 kt. At 1526:30 hrs, at about the Tank- und Rastanlage Gräfenhausen (resting facility) at the Bundesautobahn A5 (motorway), it began to turn right up to north-eastern direction. At 1526:44 hrs the Flugleiter addressed the pilot: “[…] do you have the field in sight?” The pilot responded: “Ah, not yet […].” At the time, the airplane was about 1,000 m south-west of threshold 08 at the western outskirts of Erzhausen flying a northeastern heading. The Flugleiter added: “I suggest to reduce, you are now in right base.” After the pilot had answered with “Roger”, the Flugleiter added: “You are number one to land. The wind is zero four zero, one zero knots.” At 1527:04 hrs, the airplane was about 300 m south of threshold 08 flying a northeastern heading, the radio message“[…] approach” of the pilot was recorded. From then on the airplane began to turn left. At 1527:11 hrs, the airplane crossed runway 08 with a ground speed of about 100 kt at very low altitude with northern heading. At 1527:24 hrs the pilot said: “[…] may I the […] make an orbit?” The Flugleiter answered: “Yes, do it to your left-hand side and do not overfly the highway westbound.” At 1527:31 hrs, the last radar target was recorded at approximately 600 m north-west of threshold 08 indicating an altitude of about 425 ft AMSL. About 100 m south-west of it the airplane crashed to the ground and caught fire. All three occupants suffered fatal injuries. At the time of the accident, three persons were in the Tower of the airfield. The Flugleiter, as tower controller, his replacement, and the apron controller. They observed that the airplane flew directly towards the tower coming from the DELTA approach in descent with north-eastern heading, i.e. diagonal to the landing direction. In this phase the landing gear extended. Two witnesses, who were at the airport close to the tower, stated that they had seen the airplane during the left-hand turn. They estimated the bank angle during the turn with 30-45°. The two occupants of a Piper PA-28, which had been on approach to runway 08, stated that they had become aware of the other airplane, before changing from downwind leg to final approach. They also stated that during the turn the airplane went into a dive and impacted the ground after about a half turn. Approximately 330 m north-east of the accident site, persons had been walking in a forest. One of them recorded a video. This recording was made available for investigation purposes. The video shows the shadow of the airplane moving west immediately prior to the accident. Consistent engine sounds and, 8 seconds after the shadow passed, the crash of the airplane can be heard. The aircraft was totally destroyed by a post crash fire and all three occupants were killed, among them Natalia Fileva, co-owner of the Russian Operator S7 Airlines.