Landing (descent or approach)

The aircraft was operating a charter flight to carry a party of hunters to Muyowasi-Murungu Airstrip. It took off from Dar es Salaam at 06:00 with one pilot and nine passengers. It was also carrying a load of supplies for the Muyowosi hunting camp. The flight to destination was uneventful and the runway was in sight at 08:14 hours. On reaching the runway the aircraft was too high and the pilot had to lower the nose for descent to flaring height. When the aircraft was finally flared, it gained speed and floated for much of the way down the runway. After covering about two-thirds of the runway length the brakes became effective and the aircraft swerved to the right. On crossing the right edge of the runway it collided with stumps and trees as it rolled in the bush parallel to the runway centerline. As it did so the nose landing gear struck a stump and collapsed, causing both propellers to strike the ground. The aircraft finally came to rest a short distance beyond the right end of the runway. There was fuel spillage but fire did not brake out.

The pilot entered the left-hand traffic pattern at an uncontrolled airport on a dark moonless night. Witnesses reported observing the airplane in a left descending turn. As the airplane turned onto the base leg, its left bank angle suddenly became steep. The airplane rapidly descended until colliding with level desert terrain 1.63 nm from runway 30's threshold. There were no ground reference lights in the accident site area. An examination of the airplane structure, control systems, engines, and propellers did not reveal any evidence of preimpact malfunctions or failures. Signatures consistent with engine power were found in both the engines and the propellers. The wreckage examination revealed that the airplane descended into the terrain in a left wing and nose low attitude. Fragmentation evidence, consisting of the left navigation light lens and left propeller spinner, was found near the initial point of impact. The wreckage was found principally distributed along a 307- to 310-degree bearing, over a 617- foot-long path. The bearing between the initial point of impact and the runway threshold was 319 degrees. The pilot's total logged experience in the accident airplane was 52 hours, of which only 1.6 hours were at night. The pilot was familiar with the area, but he had made only two nighttime landings within the preceding 90 days. Review of the recorded ATC communications tapes did not reveal any evidence of pilot impairment during voice communications with the pilot.

The aircraft departed Kinshasa-N'Djili Airport on a regular schedule flight to Brussels with 188 passengers and 12 crew members on board. While cruising at an altitude of 25,000 feet over Gabon, the crew contacted ATC and reported the failure of the engine n°3. He was cleared to return to Kinshasa for an emergency landing. Upon touchdown, all tyres burst and the aircraft skidded on the runway before coming to rest. All 200 occupants evacuated safely while the aircraft was damaged beyond repair.

The crew departed Roosevelt Roads NAS on a local training flight. In the evening, while returning the to NAS, the crew encountered poor weather conditions with low clouds, limited visibility and rain falls. While descending at low height, the crew suffered a loss of situational awareness and failed to respond to obstacle warnings. The four engine aircraft collided with trees and crashed on the top of Mt Perucho. The aircraft disintegrated on impact and all 10 crew members were killed.

The single-engine airplane experienced a loss of engine power during cruise flight at flight level 190 (19,000 feet) and impacted the terrain while performing a forced landing to a nearby airport. Visual meteorological conditions prevailed at the time of the accident with clear skies and unrestricted visibilities. The pilot reported the loss of engine power about 16 minutes prior to the accident and requested clearance to the nearest airport. Air traffic control (ATC) issued vectors to the Southwest Michigan Regional Airport (BEH). About 10 minutes prior to the accident, the airplane was positioned approximately 1.3 nm north of BEH at 13,500 feet. The pilot elected to follow ATC vectors verses circling down over BEH. ATC provided vectors for runway 27 at BEH. Witnesses to the accident reported seeing the airplane "spiraling down and crashing into the ground." The wreckage was located on the extended runway 27 centerline, about 1.12 nm from the runway threshold. The distribution of the wreckage was consistent with a stall/spin accident. Approximately four minutes before the accident, the airplane was on a 9.5 nm final approach at 6,700 feet. Between 9.5 and 5.3 nm the airspeed fluctuated between 119 and 155 knots, and the descent rate varied between 1,550 and 2,600 feet/min. Between 5.3 nm and the last radar return at 1.5 nm the airspeed dropped from 155 to 78 knots. According to the Pilot Operating Handbook (POH) the accident airplane should be flown at best glide speed (92 knots) after a loss of engine power. An average engine-out descent rate of 700 feet/min is achieved when best glide speed is maintained during engine-out descents. An engine teardown inspection revealed that the crankshaft was fractured at the number five crankpin journal. Visual examination of the crankshaft (p/n 13F27738, s/n V537920968) showed a fatigue-type fracture through the cheek, aft of the number five crankpin journal. The exact cause of the crankshaft failure could not be determined, due to mechanical damage at the fatigue initiation point. The fracture features for the accident crankshaft was consistent with 14 previous failures of the same part number. The engine manufacturer determined the failures were most likely due to the overheating of the steel during the forging process.

Following an uneventful flight from Bangui, the single engine aircraft bounced on landing. Out of control, it veered off runway and came to rest. All seven occupants escaped uninjured while the aircraft was damaged beyond repair.

On July 26, 2002, about 0537 eastern daylight time, Federal Express flight 1478, a Boeing 727-232F, N497FE, struck trees on short final approach and crashed short of runway 9 at the Tallahassee Regional Airport (TLH), Tallahassee, Florida. The flight was operating under the provisions of 14 Code of Federal Regulations Part 121 as a scheduled cargo flight from Memphis International Airport, in Memphis, Tennessee, to TLH. The captain, first officer, and flight engineer were seriously injured, and the airplane was destroyed by impact and resulting fire. Night visual meteorological conditions prevailed for the flight, which operated on an instrument flight rules flight plan.

The airplane was destroyed by impact forces and fire after it impacted the intersection of runway 23 and 32 while attempting a missed-approach. The pilot's crew day started at 1300 and the 14 hour duty limit was 0300 the following morning. The second leg of the flight was delayed 1 hour and 36 minutes due to a freight delay. The operator reported the pilot exceeded his 14 hour crew day by 45 minutes as a result of the freight delay. The flight was cleared for the runway 23 ILS instrument approach. A witness, who was monitoring the Unicom radio frequency, reported that he heard clicking sounds on the Unicom frequency (to bring up the runway light intensity), but the pilot did not make any radio transmissions. The witness reported the ground fog was very thick. Two witnesses reported they heard the airplane's engines. They then heard the engines go to "full power," and then they heard the airplane impact the ground. They saw an initial flash, but could not see the airplane on fire from 2,500 feet away. FAR 135.213 requires that, "Weather observations made and furnished to pilots to conduct IFR operations at an airport must be made at the airport where those IFR operations are conducted." The destination did not have authorized weather reporting, and the operator's Operating Specifications did not list an alternate weather reporting source. At 0253, the observed weather 20 miles to the north, indicated the following: winds 190 at 4 knots, 1/4 statute mile visibility, fog, indefinite ceilings 100 feet, temperature 22 degrees C, dew point 22 degrees C, altimeter 30.00. From the initial point of impact (POI), the wreckage path continued for about 210 feet on a heading of about 180 degrees. The outboard section of the left wing outboard of the nacelle was found on runway 32, about 85 feet from the POI. Separated, unburned, portions of the left aileron and left flap were also found on the runway. The remaining pieces of the left wing were located with the main wreckage. The right wing was located with the main wreckage and the entire span of the right wing from the wing root to the wingtip exhibited continuity. The inspection of the airplane revealed no preexisting anomalies.

The twin engine aircraft departed Jumla at 1404LT on a 25-minutes flight to Surkhet with two passengers and two pilots on board. While descending to Surkhet, the crew encountered poor visibility due to bad weather conditions. At an altitude of 6,500 feet, the aircraft struck the slope of a mountain and crashed 10 km from Surkhet. All four occupants were killed.

On final approach to Long Bawan Airport, at an altitude of 5,400 feet, the twin engine aircraft collided with trees and crashed in a wooded area located 8 km short of runway. The wreckage was found six days later and a passenger was evacuated alive while all nine other occupants were killed. For unknown reasons, the crew was completing the approach at an insufficient altitude.