Landing (descent or approach)

After landing on runway 29L at Tehran-Mehrabad Airport, the right main gear collapsed. The aircraft veered off runway to the right and came to rest. All 114 occupants were uninjured and the aircraft was damaged beyond repair.

The crew was on a re-positioning flight from Thompson to Island Lake, Manitoba. On arrival in the Island Lake area, the crew commenced an instrument approach to Runway 12. On the final approach segment, the aircraft descended below the minimum descent altitude and the crew initiated a missed approach. During the missed approach, the aircraft struck trees. The crew was able to return for a landing on Runway 12 at Island Lake without further incident. The two crew members were not injured; the aircraft sustained damage to its right wing and landing gear doors. The accident occurred during hours of darkness at approximately 2110 Central Standard Time.

Following an uneventful flight from Bucharest-Otopeni Airport, the crew started the approach to Oradea Airport in marginal weather conditions. On final approach, the pilot-in-command established a visual contact with the runway 19 and continued the descent. The aircraft landed 761 metres past the runway threshold. After touchdown, it was unable to stop within the remaining distance, overran and came to rest in a drainage ditch located 420 metres short of runway 01 threshold. All 13 occupants escaped uninjured while the aircraft was damaged beyond repair.

The airplane, a Rockwell Grand Commander 690C Jetprop 840, was "cleared for the approach" and approximately eight minutes later was observed emerging from the clouds, flying from west to east. Witnesses reported that the nose of the airplane dropped and the airplane subsequently impacted terrain in a near vertical attitude. Impact forces and a post impact fire destroyed the airplane. Examination of the airplane's systems revealed no anomalies. Weather at the time of the accident was depicted as overcast with three to six miles visibility. An icing probability chart depicted the probability for icing during the airplane's descent as 76 percent. AIRMETS for moderate icing and instrument meteorological conditions had been issued for the airplane’s route of flight. Another airplane in the vicinity reported light to moderate mixed icing. It could not be confirmed what information the pilot had obtained in a weather briefing, as a briefing was not obtained through a recorded source. A weight and balance calculation revealed that the accident airplane was 1,000 pounds over gross weight at the time of departure and 560 pounds over gross weight at the time of the accident. It was estimated that the center of gravity was at or just forward of design limitations.

Following an uneventful flight from Djibouti City, the crew started the approach to Bosaso Airport. When the undercarriage were selected down, the crew realized that the nose gear was stuck in its wheel well. The crew elected to get it down manually but without success. The decision was taken to land in such configuration. Upon touchdown, the aircraft landed on its nose and slid for few dozen metres before coming to rest. All 15 occupants escaped uninjured while the aircraft was damaged beyond repair.

On or about 0613LT 11 January 2009, flight 6K865 RP-C8893 departed NAIA (RPLL) for Caticlan Airport (RPVE) with 22 passengers and 5 crew members on board. The flight was uneventful until a go-around was initiated during the first approach, A second attempt to land was made which ended with the aircraft undershooting the runway. After the first touchdown the aircraft bounce and landed on the runway and veered to the left side of the runway due to the left landing gear failure upon the contact with the embankment before the road at the end of the runway. The aircraft settled down at the concrete wall of the ramp facing the passenger lounge of the Zest Air. Three (3) passengers suffered serious injuries, and 19 passengers with minor one, the crew member escape injuries except the Captain suffering slight injury. The aircraft was damaged beyond economical repair.

During a night, northbound, international over water flight that paralleled the east coast of the southeast United States, the airplane encountered headwinds. Upon arrival at the intended destination, the weather was below forecasted conditions, resulting in multiple instrument approach attempts. After the first missed approach, the controller advised the crew that there was an airport 36 miles to the north with "much better" weather, but the crew declined, citing a need to clear customs. During the third missed approach, the left engine lost power, and while the airplane was being vectored for a fourth approach, the right engine lost power. Utilizing the global positioning system, the captain pointed the airplane toward the intersection of the airport's two runways. Approximately 50 feet above the ground, he saw runway lights, and landed. The captain attempted to lower the landing gear prior to the landing, but it would not extend due to a lack of hydraulic pressure from the loss of engine power, and the alternate gear extension would not have been completed in time. The gear up landing resulted in damage to the underside of the fuselage and punctures of the pressure vessel. The captain stated that the airplane arrived in the vicinity of the destination with about 1,000 pounds of fuel on board or 55 minutes of fuel remaining. However, air traffic and cockpit voice recordings revealed that the right engine lost power about 14 minutes after arrival, and the left engine, about 20 minutes after arrival. Federal air regulations require, for an instrument flight rules flight plan, that an airplane carry enough fuel to complete the flight to the first airport of landing, fly from that airport to an alternate, and fly after that for 45 minutes at normal cruising speed. The loss of engine power was due to fuel exhaustion, with no preaccident mechanical anomalies noted to the airplane.

The airplane and two-person crew departed on a positioning flight. The pilot-in-command was not flying the airplane and sat in the right seat. The second-in-command was the pilot flying and sat in the left seat. The accident occurred on the second attempt to land at the destination airport on a snow-covered runway. While descending for the airport, the pilot not flying the airplane called the runway in sight. After assessing that they were too high the pilot not flying convinced the pilot flying to circle the airplane down to land on the runway. Circling at speeds greater than allowed by the approach categories, the crew performed a 360-degree turn to align themselves with the runway. The pilot flying did not have the runway in sight, and was verbally assisted by the pilot not flying. Both pilots stated that they were aligned with the center of the runway. During the flare to touchdown the pilot flying reported an unexpected gust of wind from the left requiring a correction. The airplane touched down about 20 feet off and to the right of the runway edge. Substantial damage was sustained to the airplane's wing and fuselage.

Prior to departure, the pilot was informed that it had been raining; the roads were wet, but no mention of ice at his destination. During the approach to the destination airport, the runway appeared "wet", and a normal approach and landing was attempted. The airplane touched down at 110 knots, the pilot "then deployed lift dump and [then applied the] brakes". Unable to get braking action, the pilot tried to slide the airplane "left and right" to get traction, but could not. The airplane departed the south end of the 4,370-foot-long runway, went over the edge of an embankment and stopped next to a levee. There were no reported pre-impact malfunctions with the airplane. The Manufacturer Approved Airplane Flight Manual Supplement for Airplanes Operating on Wet and contaminated Runways; General Information Section, states operations on runways contaminated with ice or wet ice are not recommended and no operational information is provided. Using the supplement, the anticipated landing distance on a wet runway was calculated to be about 3,400 feet, the anticipated landing distance on an uncontaminated runway was calculated to be approximately 2,800 feet, and the prescribed landing speed (Vref) was determined to be about 111 knots. A braking action (runway condition) report for the private airfield's runway did not exist, nor was one required.

Radar data showed the airplane proceeding outbound for the procedure turn. The pilot reported that they were having trouble extending the landing gear and stated, " ... we’re trying to turn back in and do our gear here all at the same time." Shortly thereafter, the other pilot reported that they had extended the gear and had "three good, three green lights, so we’re hoping the gear is down." The pilot also said, "we are now turned inbound." She was told to contact Unicom. This was the last recorded radio transmission from the flight. The Unicom operator said that she heard the pilot say that they were "coming in." Radar data indicated the airplane crossed the localizer at almost a 90-degree angle and continued turning right until it started to intercept the localizer. The data then indicated that the airplane made a left turn away from the localizer that continued and terminated near the accident site. The turn was captured by six plots. The first plot showed the airplane had descended from 9,400 feet to 9,200 feet and its ground speed had increased from 85 knots to 152 knots. The second plot showed the altitude had increased to 9,700 feet and ground speed had decreased to 132 knots. The third plot showed the altitude had increased further to 10,200 feet and ground speed had dropped to 76 knots. The fourth plot showed the airplane had made almost a 180-degree turn and was at 8,900 feet and at a ground speed of 120 knots. The fifth plot showed the airplane was at 8,700 feet and 20 knots. The sixth and final plot showed the airplane at 8,400 feet and 38 knots. An examination of the airplane showed both wing flap jackscrews retracted and the landing gear actuators extended. The landing gear control switch was in the down position and the emergency gear extension knob was pulled out to full travel. Reduced visibility and clouds were in the vicinity of the airport at the time of the accident.