Rockwell Grand Commander 680

The pilot reported a loss of power on both engines during descent to land. Approximately 3 minutes prior, tower gave pilot option of 'straight-in' to runway 14 or regular pattern to runway 32. The pilot hesitated and said 'just a minute' and tower offered wind info as '210 at 13.' Pilot replied, 'kay.' Approximately 1 minute later pilot said '33W will make a left base for 14.' Tower cleared him and declared visual contact. Pilot acknowledged '3 whiskey.' One minute and 54 seconds later, pilot declared power loss and emergency. Tower rogered. Seven seconds later, pilot said 'gonna hit it' followed 2 seconds later with an unintelligible comment. Witnesses saw the aircraft gliding wings level toward runway when a loud 'rev' was heard, the aircraft pitched up and rolled left to an inverted position before ground contact and explosion. Post accident investigation did not disclose any engine or fuel system malfunction. This aircraft had experienced a power loss after descending from 15,500 to 12,000 feet msl on 2/2/85 with the same pilot as reported by the copilot on that flight. After approximately 1 1/2 minutes power was restored. All four occupants were killed.

Crashed in unknown circumstances in the sea off Kingston, killing both occupants.

Crashed in unknown circumstances. Occupant fate unknown.

The aircraft descended into the water six and 1/2 miles southwest of Bridgeport, CT. The aircraft was on an ILS approach to runway 06. The aircraft was in communication with NY tracon arrival radar and on his initial call had indicated a desire for a clearance direct to Bridgeport. A brief radio exchange resulted in the desired clearance. There was no indication of any problems or low fuel state in the communication. Approximately 15 minutes after initial call, the controller was giving the final approach instructions to N100CT, after having used some turns and changes in airspeed to space the flight behind landing traffic, when radar and radio contact was lost. Post accident fuel calculations based on fuel aboard vs flight time en route and normal fuel consumption showed approximately 6 gallons of fuel remaining. The normal unusable fuel for this aircraft is 13 gallons which increases during maneuvering. Identifiable parts of the aircraft and some paper documents were recovered by the coast guard. The pilot's body was not recovered.

At about 60 feet agl black smoke was observed coming from the left engine. The aircraft continued a climb in a nose high attitude and the nose pitched down and the aircraft rolled inverted. Engine teardown revealed extensive damage to the supercharger assembly. The impeller shaft was bent and its associated bearing damaged. The aircraft had not flown for about 14 years. Engine service instructions describe pre-oiling of the supercharger drive shaft bearing after any prolonged period of inactivity. The owner, a paraplegic, was seated in the left seat. The pilot seated in the right seat had a history of heart and pulmonary disease. The gear and flaps were in the down position. Prior to departure, a witness asked the owner 'are you doing the elevators and ailerons and is he your rudders.' the owner responded with 'we have an arrangement'. Both occupants were killed.

The aircraft crashed after starting a go-around or aborted landing at Norman, OK. The aircraft was on a cross-country flight from Dallas to Wichita. There was no radio communication with the aircraft after it was cleared to land. The approach looked ok but on short final the aircraft suddenly turned right, leveled then entered a steep climbing right turn and continue to roll until inverted then pitched nose down until crashing. The pilot in the right seat had reportedly worked late the night before installing what appeared to be an auxiliary fuel system in the cabin. The aircraft had just been sold and the identity and location of the owner was not established. No one claimed the wreckage. Evidence revealed that both propellers were rotating at high rpm at impact. The fire after impact burned most intensely and persistently in the center of the cabin where the remains of what appeared to be an auxiliary fuel system were found. No pre-impact malfunctions or failures were found. Both occupants were killed.

The aircraft crashed while doing magnetometer surveys at low altitude. The right engine had lost power then regained it for a short period and lost it again. A videotape in the aircraft recorded the pilot saying, 'I changed that # just in time.' the aircraft yawed and the propeller slowed at the same time. The fuel selector valves were found on the center tanks. The boost pump switches were found in the off position. When changing from outboard to center tanks the boost pumps must be on or fuel starvation will occur. As the aircraft slowed the tape revealed that the copilot called out 'down to 90'. 90 mph is VMC. The aircraft stalled, shortly after the asymmetrical thrust rolled the aircraft to the right and into the ground. Both occupants were killed.

Witnesses saw the aircraft briefly before it crashed. One witness saw the aircraft flying toward a dark cloud at an unknown altitude, but too high to fly under it. Shortly thereafter, he heard the engine noise increase and decrease, then increase until it was loud. He then heard what sounded like an explosion. He did not see the crash, but saw smoke from the crash site. A woman close to the crash site said the weather was very windy, heavy rain was falling and visibility was restricted. An examination of the wreckage revealed the outboard wing panels had failed from positive overloads and the left horizontal stabilizer had failed downward. These parts were found 3/4 to 1 mile from the main wreckage. Prior to the flight, a passenger, who paid for fuel and minor maintenance, said the purpose of the flight was for surveying. However, no surveying equipment was on board. Sheriff personnel said the aircraft was under surveillance for an illegal operation.

Crashed in unknown circumstances, killing all three occupants.

At approximately 0928 est, the pilot obtained a FSS weather briefing by telephone. He was briefed on conditions of low ceilings, fog, light rain, drizzle, snow and blowing snow along his route. However, he did not ask about icing conditions and the briefing did not include a fight precaution for icing nor a sigmet (issued at 0820 est) which forecasted moderate to severe mixed icing. While en route, the pilot made several altitude changes by request. When he was queried about a heading deviation, he replied 'we're having a little problem.' this was the last radio contact. ATC received no radio calls concerning icing problems or an emergency. Witnesses near the crash site saw the aircraft come out of the clouds in a near vertical descent, rotating in a nose down attitude, then impact and burn. Airframe ice up to 1/2 inch thick was found on/near parts that were not fire damaged.