Takeoff (climb)

Shortly after takeoff from Rybinsk-Yuzhny Airport, the crew encountered engine problems and elected to make an emergency landing. The aircraft impacted trees and crashed in a snowy wooded area located 2 km from the airport. All 14 occupants evacuated safely. Nevertheless, one skydiver was slightly injured but refused to go to hospital. The aircraft was damaged beyond repair.

The pilot stated that, during the preflight inspection of the airplane, he checked the fuel gauge, and it indicated 65 gallons. Due to the design of the fuel system, it is not possible to visually check the fuel level to confirm that the fuel gauge indication is accurate. During takeoff and as he reduced power for enroute climb, the left engine began to surge and lose power. He immediately turned left back toward the airport and contacted the control tower to advise that he was making a single-engine, straight-in approach to land. When he lowered the landing gear, the right engine began to surge and lose power. Subsequently, the pilot declared an emergency, and, realizing he had insufficient engine power and altitude to return to the airport, he retracted the landing gear and made a no-flap, gear-up landing on a nearby golf course. Postaccident application of battery power to the airplane confirmed that the fuel gauge indicated 65 gallons; however, when the airplane's fuel system was drained, only about 1/2 gallon of fuel was recovered. Thus, the engines lost power due to fuel exhaustion.

Aircraft was destroyed following a collision with a utility pole, trees, and terrain following a go-around at Thomson-McDuffie Regional Airport (HQU), Thomson, Georgia. The airline transport-rated pilot and copilot were seriously injured, and five passengers were fatally injured. The airplane was registered to the Pavilion Group LLC and was operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as a business flight. Night visual meteorological conditions prevailed, and an instrument flight rules flight plan was filed. The flight originated at John C. Tune Airport (JWN), Nashville, Tennessee, about 1828 central standard time (1928 eastern standard time). The purpose of the flight was to transport staff members of a vascular surgery practice from Nashville to Thomson, where the airplane was based. According to initial air traffic control information, the pilot checked in with Augusta approach control and reported HQU in sight. About 2003, the pilot cancelled visual flight rules flight-following services and continued toward HQU. The last recorded radar return was observed about 2005, when the airplane was at an indicated altitude of 700 feet above mean sea level and 1/2 mile from the airport. There were no distress calls received from the crew prior to the accident. Witnesses reported that the airplane appeared to be in position to land when the pilot discontinued the approach and commenced a go-around. The witnesses observed the airplane continue down the runway at a low altitude. The airplane struck a poured-concrete utility pole and braided wires about 59 feet above ground level. The pole was located about 1/4 mile east the departure end of runway 10. The utility pole was not lighted. During the initial impact with the utility pole, the outboard section of the left wing was severed. The airplane continued another 1/4 mile east before colliding with trees and terrain. A postcrash fire ensued and consumed a majority of the airframe. The engines separated from the fuselage during the impact sequence. On-scene examination of the wreckage revealed that all primary airframe structural components were accounted for at the accident site. The landing gear were found in the down (extended) position, and the flap handle was found in the 10-degree (go-around) position. An initial inspection of the airport revealed that the pilot-controlled runway lights were operational. An examination of conditions recorded on an airport security camera showed that the runway lights were on the low intensity setting at the time of the accident. The airport did not have a control tower. An inspection of the runway surface did not reveal any unusual tire marks or debris. Weather conditions at HQU near the time of the accident included calm wind and clear skies.

At 1339LT, the crew was cleared for takeoff from runway 32 at Tuxtla Gutierrez-Angel Albino Corzo Airport. During initial climb, after being cleared to climb to 12,500 feet, the crew informed ATC he was returning to the airport. Shortly later, the aircraft lost height and crashed in a field, bursting into flames. The aircraft was totally destroyed and all 8 occupants were killed.

The pilot departed in night instrument flight rules (IFR) conditions on a medical specimen transport flight. During the climb, an air traffic controller told the pilot that the transponder code he had selected (2501) was incorrect and instructed him to reset the transponder to a different code (2531). Shortly thereafter, the airplane reached a maximum altitude of about 3,300 ft and then entered a descending right turn. The airplane’s enhanced ground proximity warning system recorded a descent rate of 11,245 ft per minute, which triggered two “sink rate, pull up” warnings. The airplane subsequently climbed from an altitude of about 1,400 ft to about 2,000 ft before it entered another turning descent and impacted the ground about 5 miles northeast of the departure airport. The airplane was fragmented and strewn along a debris path that measured about 800-ft long and 300-ft wide. Postaccident examination of the airplane did not reveal any preimpact mechanical malfunctions that would have precluded the pilot from controlling the airplane. The engine did not display any evidence of preimpact anomalies that would have precluded normal operation. An open resistor was found in the flight computer that controlled the autopilot. It could not be determined if the open resistor condition existed during the flight or occurred during the impact. If the resistor was in an open condition at the time of autopilot engagement, the autopilot would appear to engage with a mode annunciation indicating engagement, but the pitch and roll servos would not engage. The before taxiing checklist included checks of the autopilot system to verify autopilot function before takeoff. It could not be determined if the pilot performed the autopilot check before the accident flight or if the autopilot was engaged at the time of the accident. The circumstances of the accident are consistent with the known effects of spatial disorientation. Dark night IFR conditions prevailed, and the track of the airplane suggests a loss of attitude awareness. Although the pilot was experienced in night instrument conditions, it is possible that an attempt to reset the transponder served as an operational distraction that contributed to a breakdown in his instrument scan. Similarly, if the autopilot’s resistor was in an open condition and the autopilot had been engaged, the pilot’s failure to detect an autopilot malfunction in a timely manner could have contributed to spatial disorientation and the resultant loss of control.

The pilot landed at the airport to refuel the airplane and pick up cargo. The pilot spoke with three employees of the fixed base operator who stated that he seemed alert and awake but wanted to make a "quick turn." After the airplane was fueled and the cargo was loaded, the pilot departed; the airplane crashed 1 minute later. Night visual meteorological conditions prevailed at the time. An aircraft performance GPS and simulation study indicated that the airplane entered a right bank almost immediately after takeoff and then made a 42 degree right turn and that it was accelerating throughout the flight, from about 75 knots groundspeed shortly after liftoff to about 145 knots groundspeed at impact. The airplane was climbing about 500 to 700 feet per minute to a peak altitude of about 260 feet above the ground before descending. The simulation showed a gas generator speed of about 93 percent throughout the flight. The study indicated that the load factor vectors, which were the forces felt by the pilot, could have produced a somatogravic illusion of a climb, even while the airplane was descending. The postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. Based on the findings from the aircraft performance GPS and simulation study, the degraded visual reference conditions present about the time of the accident, and the forces felt by the pilot, it is likely that he experienced spatial disorientation, which led to his inadvertent controlled descent into terrain.

The instrument-rated pilot obtained a weather briefing prior to departure that contained surface observations along the route of flight, as well as significant meteorological (SIGMET) and airman's meteorological (AIRMET) information. The briefing also included convective weather advisories, a convective outlook, the area forecast, pilot reports, radar summary, and winds aloft information. The area forecast included overcast ceilings at 1,500 feet mean sea level (msl) with cloud tops at 6,000 feet msl, visibility between 3 and 5 miles, light rain and mist, and isolated thunderstorms with cumulonimbus tops to 35,000 feet msl. After the pilot departed, he established contact with air traffic control; the airplane was initially observed on radar heading toward the destination airport. An analysis of radar from the day of the accident indicated that isolated thunderstorms existed and that, almost 4 minutes after departing, the airplane encountered an area of developing rain showers and vertical updrafts. The airplane began a descending right turn followed by a brief climb, then another descent; its ground speed slowed from 202 knots to 110 knots before the data ended. At that time, the airplane was at 4,500 feet msl. A witness said he heard the airplane but was unable to see it due to the low cloud layer. A few moments later, he saw the airplane exit the cloud layer in a spin before it impacted the ground. A postaccident examination revealed no mechanical deficiencies that would have precluded normal operation of the airplane and engine.

On December 8, 2012, at 1334 eastern standard time, a Cessna 421C, N297DB, operated by a private individual, was destroyed when it collided with trees and terrain following a loss of control after takeoff from North Palm Beach County Airpark (LNA), Lantana, Florida. The commercial pilot was fatally injured. Visual meteorological conditions prevailed, and no flight plan was filed for the personal flight, which was conducted under the provisions of Title 14 Code of Federal Regulations Part 91. The pilot took delivery of the airplane from a maintenance facility that had just completed an annual inspection and repainting of the airplane. According to the owner of the facility, who was a certificated pilot and an airframe and powerplant mechanic, the pilot completed the preflight inspection and the airplane was towed outside. The pilot started the airplane, but then shutdown to resolve an alternator charging light. Afterwards, the pilot stated that he planned to fly to Okeechobee, Florida, complete a few landings, and then continue to Miami. According to the mechanic, the pilot performed a ground run of the airplane for several minutes before taxiing to the approach end of Runway 3 for takeoff. The airplane lifted off about halfway down the runway and climbed at a "normal" rate. The mechanic then observed the airplane suddenly yaw to the left "for a second or two" and the airplane's nose continued to pitch up before rolling left and descending vertically, nose-down, until it disappeared from view. Several witnesses provided similar accounts to a Federal Aviation Administration (FAA) inspector and the local sheriff's department. One witness, a certificated flight instructor said, "The airplane just kept pitching up, and then it looked like a VMC roll."

The twin engine aircraft was engaged in an ambulance flight from La Yesca to the Zapopan Air Base, carrying two soldiers who were injured in a car crash, and one pilot. During the takeoff roll, the airplane encountered strong crosswinds and went out of control. It veered off runway to the right and came to rest in a wooded area. All three occupants were rescued while the aircraft was damaged beyond repair.

The aircraft was on its way from Moroni-Hahaya-Iconi-Prince Saïd Ibrahim Airport to the Ouani Airport located on the neighboring island of Anjouan. Shortly after take off from runway 20, while in initial climb, the captain informed ATC about technical problem and elected to return. He realized he could not make it so he attempted to ditch the aircraft some 200 metres off shore, about 5 km from the airport. All 29 occupants were rescued, among them five were slightly injured.