Scheduled Revenue Flight

Two minutes after takeoff from Tombouctou Airport, while climbing, one of the engine failed. The pilot-in-command elected to return for an emergency landing and initiated a turn when the aircraft stalled and crashed in a field located 3 km from the airport, bursting into flames. A passenger was seriously injured while 51 other occupants were killed.

Iberia Flight 610 departed Madrid at 08:47 for a scheduled flight to Bilbao, where it was scheduled to land at 09:35. The Boeing 727, named "Alhambra de Granada", climbed to the cruising altitude of FL260. At 09:09 the crew were instructed to descend to FL100. Seven minutes later the copilot contacted Bilbao Tower. The controller then cleared the flight for an ILS approach: "Iberia 610, you can continue descent, for an ILS approach to Bilbao, runway 30, wind is 100 degrees 3 knots, QNH 1025 and transition level 70." This was confirmed by the crew. The controller subsequently offered them a direct clearance to the approach fix, which is located at 13 DME from the airport. The captain declined and decided to fly the standard approach procedure. At 09:22 flight 610 reported over the Bilbao VOR at 7000 feet, starting the standard approach procedure. The airplane further descended to 5000 feet, which it reached three minutes later. The crew switched the Altitude Alert System to 4300 ft (the minimum sector altitude is 4354 feet) and continued the descent. The altitude alert horn sounds 900 feet prior to reaching the preset altitude (approach mode) and 300 feet below that altitude (deviation mode). Since the flight had 700 feet to go, the horn would only sound at around 4000 feet. Since the crew descended below the minimum sector altitude, the altitude alert horn sounded at 4040 feet. The crew interpreted this being the approach mode alert, and continued their descent. Fifty-seven seconds after passing through the minimum sector altitude, the airplane struck the base of a structure of antennas located close to the top of Mount Oiz (3356 feet high). The left wing broke off and the remaining fuselage crashed onto the hillside, cutting a swath through the trees. The aircraft disintegrated on impact and all 148 occupants were killed.

While approaching Banjarmasin-Syamsudin Noor Airport, the pilot encountered poor weather conditions. In limited visibility due to heavy rain falls (thunderstorm activity), the twin engine aircraft struck the slope of a mountain located few km from the airport. A passenger was seriously injured while nine other occupants were killed.

During an engine start, prior to the flight, the left engine backfired 2 or 3 times. A witness described the 1st backfired as 'the loudest I have ever heard.' When the aircraft took off, two persons living near the departure end of the runway noted that the aircraft (believed to be the same) sounded different and had a 'cluttering sound'. While climbing, the pilot declared an emergency and reported a fire in the left engine. He was vectored toward Altus AFB while descending in IFR conditions. He descended into VFR conditions and saw the airport about 3 miles away. A witness saw smoke and fire trailing from the vicinity of the left engine. He stated that the aircraft's nose came up, the plane rolled to the left, then it entered a steep, nose down, inverted attitude just before it crashed and burned. An exam revealed the engine exhaust manifold header assy had failed and allowed hot exhaust gases to escape in the engine nacelle in the vicinity of fuel and oil lines. Corrosion had progressed thru the header assy. Ad 75-23-08 requested general inspection, but contained note 'do not remove clamps.' No record of replacement in 6,100 hours. Both occupants were killed.

During arrival, the crew of NP flight 1802 contacted the company weather observer at Soldotna who advised the weather was: wind calm, ceiling 600 to 800 feet, visibility 8 to 10 miles, no precipitations. They made an NDB approach, but missed the approach and requested another approach. Approximately one minute later, the crew reported the aircraft had accumulated a heavy load of ice. They could have diverted nearby to Kenai for an ILS approach, but elected to make a VOR approach back to Soldotna. While being vectored, they made two more checks with the weather observer who advised the weather had deteriorated to below minimums and recommended diverting, but the crew did not acknowledge. Subsequently, the aircraft collided with trees on high terrain approximately 1.5 mile southeast of the airport. There was evidence the aircraft was circling when it crashed. Circling was not authorized south of runway 07/25. Investigations revealed recurring problems with the anti-ice system, its 'single' mode was inoperative, two de-ice boots were missing from prop blades. Weather station listed only one lighted marker (1/4 mile away) for visibility reference; minimum landing visibility was one mile; ceilometer was inoperative. No FAA inspection of weather station in 2 years. Icing forecasted. All nine occupants were killed.

Six seconds after takeoff from runway 13 at Minsk-2 Airport, while climbing to a height of 35 meters and a speed of 325 km/h, the left engine lost power and failed. The crew continued to climb to a height of 220 meters, still at a speed of 325 km/h, when the right engine lost power and failed. The pilot-in-command attempted an emergency landing when the aircraft struck trees and crashed in a wooded area located 10,100 meters from the airport, bursting into flames. The wreckage was found 3 hours and 15 minutes later. 22 people were injured while 58 others were killed, among them three crew members.

En route, one of the engine failed. The pilot reduced his altitude and ditched the aircraft some 22 km off Taboga Island. All four occupants were rescued while the aircraft sank and was lost.

For unknown reasons, the crew descended too low when the airplane struck the icy surface of the lake and crashed. Crew fate unknown.

En route from Quibdó to Medellín, the crew encountered marginal weather conditions with mist and intermittent rain falls. While cruising at an altitude of 11,500 feet, the aircraft struck the slope of Mt El Plateado located in the northeast part of the Chocó province, about 66 km northeast of Quibdó. The aircraft was destroyed upon impact and all 23 occupants were killed.

After passing over the Tuluá VOR at an altitude of 10,500 feet, the crew was cleared to start the descent when the aircraft struck the slope of a mountain located 16 km southeast from Buga. The aircraft disintegrated on impact and all 17 occupants were killed. The wreckage was found at an altitude of 8,600 feet. At the time of the accident, the visibility was reduced due mist and intermittent rain falls.