Executive/Corporate/Business

The pilot transmitted on unicom that he was on final for runway 24. Following a double fuel starvation power loss the airplane impacted nose low with trees and terrain about 2.6 miles from runway 24. Last fueling occurred on the previous day at Albermarle, NC, the pilot's primary source of fuel, 50 miles from Burlington. The flight proceeded to Burlington, Teterboro, and was returning to Burlington. Total estimated flight time was 4 hours 32 minutes. Fuel burn was calculated to be 361 gallons. Usable fuel was 384 gallons and 24 gallons were recovered from the right center tank. If the fuel transfer pump does not operate 28 gallons will be unusable. That pump was found in the off position. No fuel spillage occurred at the scene. On 2/8/90 the pilot purchased 361 gallons of fuel for N110LT. Lower fuel prices at the favored location were the pilot's reason for fueling there. Examination of engines, propellers, fuel pumps, and other relative components did not reveal any significant discrepancy. Both occupants were killed.

Before takeoff, pilot was advised of IFR conditions along 1st part of route, with flight predictions for occasional moderate turbulences below 15,000 feet and mixed icing from freezing level (6,000 feet) to 18,000 feet. He filed IFR flight plan with cruise altitude of 11,000 feet. During departure, pilot was cleared to climb to 9,000 feet and told to expect clearance to 11,000 feet 5 minutes later. Radar data showed aircraft climbed at about 1,500 feet/minute and 100 knots, slowing slightly above 8,000 feet. At abt 9,000 feet, aircraft started to level and accelerate. It then climbed momentarily, deviated laterally from course and entered steep descent. Inflight breakup occurred and wreckage was scattered over 4,100 feet area. Trajectory study showed breakup occurred between 4,500 feet and 6,500 feet as aircraft was in steep descent in excess of 266 knots. Metallurgical examination of wings and stabilizers revealed features typical of overstress separation; no pre-existing cracks or defects were found. The aircraft was recently purchased. Pilot's son indicated principal problem was 'twenty year leap in technology' from previously owned PA-24, that pilot had difficulty with avionics and flight director/autopilot, and that he lacked detail training in autopilot emergencies. Both occupants were killed.

The pilot detected an unacceptable sink rate on short final approach and initiated a go-around. After applying power and retracting the landing gear, the left wing dropped and struck the runway. The aircraft then ground looped and came to rest with substantial damage. The pilot escaped uninjured while the aircraft was damaged beyond repair.

The aircraft was en route at 31,000 feet, when the low pressure fuel filter warning light illuminated. The pilot diverted toward Columbia, MO, but before reaching Columbia, both engines lost power. Subsequently, the aircraft crashed about 2 miles east of the airport. An investigation revealed the fuel was contaminated with water. The fuel filter deicing system was operational, but a post-accident examination revealed the deicing tank was empty. This was the 2nd flight since the deice tank had been serviced. The manufacturer's info indicated the supply tank should have provided about 3 to 4 hours of filter deicing operation. One of the pilots was killed.

During arrival, heavy rain showers were reported west of airport. At the airport, the weather was about 200 feet obscured with fog and drizzle, wnd was easterly at 5 to 7 knots. The pilots intended to land on runway 22, but after being told the wind was gusting to 27 knots, they elected to land on runway 04. The actual wind was not gusty. The erroneous gust indication was from a malfunction of the LLWAS. On final approach for an ILS runway 04 approach, the flight was advised the wind was from 030° at 5 knots and the RVR was 1,800 feet. Minimum RVR for the approach was 2,400 feet. The crew acknowledged; 22 seconds later, the ELT activated as the aircraft touched down 1,600 feet short of runway 04 and hit approach lighting system, railroad tracks and a fence. Investigations revealed the aircraft descended thru windshear. While maneuvering onto final approach; ground speed varied between 320 and 190 knots as aircraft was maneuvered thru tailwind to headwind near faf. CVR data verified a delay in descent from 4,000 feet to 1,900 feet before reaching faf and that the gear warning horn sounded before extension of gear and speed brakes. There was evidence of low engine rpm during impact, but no preimpact mechanical problem was found. Each pilot had over 10,000 hours of flight time, but only about 160 hours each in jet aircraft. All seven occupants were killed.

On January 16, 1989, Machen nacelle mounted induction air intercoolers were installed on N6894Y. On December 14, 1989, an annual inspection was performed, and a Machen superstar i-680 kit was installed. On December 21, 1989, N6894Y was at 6,000 feet when the pilot reported a problem with the right engine. The pilot reported a fire in the right engine. A couple of minutes later, he radioed he could not shut down the right engine. At 1034:37 the pilot advised his 'right engine just tore off' and that he was 'in a spin heading down.' The exhaust tailpipe of the left turbocharger on the right engine was found to have separated. Metallurgical examination revealed the tailpipe failed due to fatigue cracking. Records showed that part I of piper service bulletin 920 (engine tailpipe inspection) had been completed, while part II (addition of fire detection system) had not been accomplished due to the lack of available kits. The pilot, sole on board, was killed.

During a preflight weather briefing, the instrument rated pilot was told by the AFSS specialist that marginal VFR and IFR conditions would prevail along the route of flight. The pilot did not file a flight plan. The airplane was last depicted on radar at 2,500 feet msl and heading towards high terrain. A NY state trooper leaving his office about the time the accident occurred stated snow was falling very hard and visibility was low. The state trooper's office was about 5 miles from the crash site. The airplane hit a 3,400 foot mountain at an elevation of 2,500 feet. The airplane was missing 4 days and was found by the crew of a NY state police helicopter. All six occupants were killed.

The pilot was cleared for takeoff on an IFR flight. After takeoff, the pilot did not contact departure control. A search was initiated and the aircraft was found near the departure end of runway 07. There was evidence the aircraft had impacted in a left wing down, nose low attitude. No preimpact part failure or malfunction of the aircraft was found. Both occupants were killed.

The aircraft was on an ILS approach at dusk in IMC and icing conditions with the alternate air on. According to the pilot, he had just descended below an overcast, on final approach, when the engine lost power and would not respond to throttle application. A forced landing was made in a wooded area short of the runway and the aircraft was extensively damaged. During an exam of the engine, the turbocharger and wastegate transition pipes were found separated at the flange. Carbonaceous residue was found in the area of separation, but no heat damage was noted. The gasket, bolts, washers and self-locking nuts (for holding the pipes together) were not found. Later, the engine ran successfully during an operational check. During the investigation, 3 similar cases of pipe separation were identified, which involved another aircraft; these resulted in only partial losses of power. The right front seat passenger reported seeing a trace of ice on the wings as the aircraft was descending thru clouds. The pitot heat, stall warning heat, and ice light switch were fnd in the 'off' position. At 1650 cst, the temperature and dew point at the surface were 36° and 35° respectively. All three occupants were seriously injured.

A Beech C90 (N3804F) and a Cessna 172 (N52244) collided at an altitude of about 200 to 300 feet agl as the two aircraft were taking off on intersecting runways at an uncontrolled airport. The Beech pilots were departing from runway 06 with an IFR flight plan, while the Cessna pilots were in the pattern on an instructional flight, performing a touch and go. Two ATP pilots were in the Beech; an instructor pilot (cfi) and a low-time student were in the Cessna. Based on witness information, the Cessna crew made at least one radio call on unicom while in the pattern before landing, and another call while taking off. The Beech crew reportedly made a radio call as the takeoff roll was begun. Neither flight crew appeared to take any evasive action until just before impact. The Beech pilots had received a flight plan clearance on another frequency shortly before taking off. Both pilots in the Beech were killed.