Copenhagen-Kastrup

The accident flight was a scheduled domestic flight from Copenhagen Airport, Kastrup (EKCH) to Aalborg Airport (EKYT). The flight was uneventful until the landing gear was selected down during the approach to EKYT runway 26R. The nose landing gear and the left main landing gear (MLG) indicated down and locked. The right MLG indicated “in transit” (not down and locked). The Aalborg Tower was informed about the problem with the right MLG indication. A go-around was initiated at 1100 feet MSL with a climb towards 2000 ft. The flight crew consulted the Quick Reference Handbook (QRH). An alternate landing gear procedure was initiated. The right MLG indication remained in “transit”. A mayday call was made to Aalborg Tower and they were informed about the unsafe landing gear. The flight crew reset the alternate gear extension system and subsequently they tried to make a normal gear up selection. The nose landing gear and the left MLG retracted normally, however the right main landing gear indication remained in “transit”. A second attempt to use the alternate landing gear extension procedure was performed without any changes to the right MLG indication. The aircraft entered a holding pattern in order to reduce the amount of fuel and at the same time to brief the passengers about the situation and to prepare the passengers for an emergency landing. Passengers seated at rows 6, 7 and 8 seats D and F were reseated away from the right propeller area. During the approach the flaps were selected to 10° and the landing gear horn started. The warning horn continued throughout the remaining flight. During the emergency landing the left MLG touched down on the runway first, followed by the right MLG. Shortly after the right MLG contacted the runway the right MLG collapsed. The aircraft departed the runway to the right and came to rest on a heading of 340° at 1357:26 hrs.

A brand new Cessna 525A CitationJet 2, D-IEVX, arrived at Milan-Linate following a flight from Köln. The Cessna was to carry out a return flight to Paris-Le Bourget, carrying two pilots, a Cessna sales manager and a prospective customer. The plane arrived at 06:59 and was taxied to the General aviation apron, also known as 'West apron'. It was a foggy morning at Milan and one of the passenger flights parked on the North apron was SAS MD-87 "Lage Viking" which was being prepared for flight SK686 to Copenhagen, scheduled to depart at 07:35. At 07:41, the pilot of the MD-87 contacted Linate Ground Control for his engine start clearance, as the boarding of 104 passengers had been completed. The Ground controller cleared the pilot to start engines and advised that the slot time for takeoff of the flight was at 08:16. Thirteen minutes later flight 686 was cleared to taxi to runway 36R: "Scandinavian 686 taxi to the holding position Cat III, QNH 1013 and please call me back entering the main taxiway." A few minutes later, the Cessna pilot requested permission to start the engines. The ground controller then gave start-up clearance. The ground controller then requested flight 686 to contact the Tower controller. From this moment on the crew of the MD-87 and the crew of the Cessna were tuned on two different radio frequencies. At 08:05 the pilots of the Cessna received taxi clearance: "Delta Victor Xray taxi north via Romeo 5, QNH 1013, call me back at the stop bar of the ... main runway extension." The pilot acknowledged by saying: "Roger via Romeo 5 and ... 1013, and call you back before reaching main runway." The Cessna started to taxi from the General Aviation parking position, following the yellow taxi line. After reaching the position where the yellow taxi line splits into two diverging directions, the pilot erroneously took the taxi line to right and entered taxiway R6. At 08:09 the Ground controller cleared the Cessna to continue its taxi on the North apron. At the same time the Tower controller cleared the MD-87 for takeoff: "...Scandinavian 686 Linate, clear for take off 36, the wind is calm report rolling, when airborne squawk ident." The pilot advanced the throttles and acknowledged the clearance: "Clear for takeoff 36 at when...airborne squawk ident and we are rolling, Scandinavian 686." When the MD-87 was speeding down the runway, the Cessna crossed the runway holding sign and entered the active runway 18L/36R. At 08.10:21 the nose landing gear of the MD-87 had left the ground and main gears were extending the shock absorbers but the main wheels were still on the ground at an airspeed of 146 knots (270,5 km/h). At that moment the MD-87 crew probably saw a glimpse of the Cessna through the fog and reacted with additional large nose-up elevator. At that moment the MD-87 collided with the CitationJet. The right wing of the MD-87 sustained damage at the leading edge and the right hand main landing gear leg broke off. It damaged the right flap and struck the no. 2 engine which then separated from the pylon. The pilot of the MD-87 gradually advanced the throttles and then the aircraft was airborne for a total of 12 seconds, reaching an estimated height of about 35 feet (11 meters). The left hand engine suffered a noticeable thrust reduction as a result of debris ingestion, which became insufficient to sustain flight. The airspeed had increased up to 166 knots (307,6 km/h), but the MD-87 descended abruptly making contact with the runway with the left hand maingear, the truncated right hand maingear leg and the tip of the right hand wing. Prior to touch down the pilot reduced engine thrust and after ground contact the engine reverse levers were activated and deployed (on the left hand engine only). Maximum available reverse thrust was selected and the brakes applied. The plane skidded past the grass overrun area, across a service road, crashing sideways into a baggage handling building, which partly collapsed. This building was located 20 m/67 feet to the right of the runway, and 460 m/1500 feet from the runway end.

The MD-81 arrived from Zurich at 22:09 and was parked at gate 2 overnight with temperatures of around +1 deg. C. Approx. 2550 kg of fuel remained in each wing tank. The aircraft was scheduled to leave Stockholm for Copenhagen at 08:30 and the temperature had dropped to -0 deg C in the early morning. During the night and in the early morning clear ice had formed on the upper side of the wings, but this was not detected by the ground crew member who checked the forward part of the wing. The aircraft was fuelled with 1400 kg of fuel and was ready for de-icing at 08:30, which was done using 850l of Type I fluid. After de-icing the mechanic didn't check whether there was any clear ice on the upper side of the wings, since he had previously found none. The flight was then cleared to taxi to runway 08 and the aircraft took off at 08:47. After 25 seconds (at 1124 feet height) bangs, vibrations and jerks were perceived in the aircraft. This was caused by a no. 2 engine surge. The engine was throttled down a little, but throttle control simultaneously changed to an automatic mode which increased throttle setting with altitude (Automatic Thrust Restoration - ATR). This in turn increased the intensity of the surging. The no. 1 engine surged 39 seconds later, but this was not noticed by the flight crew. An attempt to switch on the autopilot at 2616 feet failed. At 76 resp. 78 seconds into the flight both the no. 2 and no. 1 engine failed after breakup of the stage 1 stators of both engines (initiated by high loads from the surges). The aircraft was climbing through 3206 feet at that moment with a 196 KIAS. A no. 1 engine fire warning at 91 seconds into the flight made the crew activate the fire extinguishing system. A SAS captain traveling the passenger cabin realized that there were problems and hurried to the cockpit to assist the flight crew. The aircraft was in a gliding left turn at that moment. When descending through 420 m, still in the clouds, the assisting captain gradually extended the flaps. The flaps were fully extended at 1100 feet (340 m) and the plane broke through the clouds at 980-820 feet. A field in the direction of flight was chosen for an emergency landing. The wheels were selected down and Stockholm control was informed about the imminent crash-landing. The MD-81 contacted trees at 121 knots and a major portion of the right wing broke off. The plane then struck sloping ground tail-first and slid along the ground for 110 m. The fuselage was broken into three pieces, but there was no fire.

While on a night approach to Copenhagen-Kastrup Airport runway 22L, the right engine failed. The crew was able to feather the right propeller but the nose gear failed to deploy. Manual recycling was ineffective and the crew continued the approach. The aircraft landed on its nose, rolled for few dozen meters and came to rest on the main runway. Both pilots escaped uninjured and the aircraft was damaged beyond repair.

While approaching Aarhus-Tirstrup Airport on a positioning flight from Copenhagen-Kastrup Airport, the twin engine aircraft crashed in a field located 3,5 km east of the airport. The pilot, sole on board, was killed.

On final approach to Copenhagen-Kastrup following a positioning flight from Luton, both engines failed. The aircraft stalled and crashed into the sea about 4 km offshore. The pilot, sole on board, was rescued while the aircraft sank and was lost.

The aircraft was completing flight DX386 from Stauning to Copenhagen. It departed Stauning at 1724LT with 13 passengers and a crew of two on board. During approach to runway 22L at Kastrup Airport, the captain noticed a faint smell of burnt insulation and asked the copilot if he could smell anything "hot". The copilot who could not confirm the smell was asked by the captain to turn the cabin temperature - which was operated in manual mode - towards cold. The captain checked indication and warning systems for generators, batteries, circuit breakers and continued the approach. After a normal approach and landing at 18:07 hours the aircraft was cleared to the parking area via taxiway two and to change frequency to Apron Tower when clear of the runway. After contact with Apron Tower instructions were received for taxi to parking via taxiway two and inner perimeter but one minute later new instructions were received to taxi via runway three zero. While taxiing the left engine was shut down as is normal company procedure and taxiing continued on the right engine. Suddenly the captain noticed a flash outside the aircraft. The captain's first thought was that fire had started in the left engine or in the brakes and he brought the aircraft to a halt to investigate. Very shortly after a flash fire erupted in the left hand cockpit side console aft of and close to the captain's left leg. The crew made no radio transmissions about the fire since all electrical power was immediately turned off, in accordance with emergency procedure, after the aircraft was brought to a stop. The captain shouted towards the cabin: "It is burning, out". The passengers and crew then vacated the aircraft. The accident occurred at or about 18:11 hours on runway 30 during darkness. All 15 occupants escaped uninjured.

Few minutes after takeoff from Copenhagen-Kastrup, the crew encountered technical problems and was cleared to return for an emergency landing. On final approach, the twin engine airplane crashed 500 meters short of runway threshold, lost its undercarriage and both wings and came to rest. There were no casualties.

After touchdown on runway 31 and a course of 950 metres, the airplane went out of control, veered off runway to the left and came to rest against an embankment located 85 metres to the left of the runway. All 26 occupants escaped uninjured while the aircraft was damaged beyond repair. It was reported the aircraft landed with a 9 knots crosswind and a 6 knots tailwind component. Also, the runway was covered with water and ice at the time of the accident.