Marathon

The fuel tanks were filled the day before the accident date, and on the day of the accident, the airplane was flown from that airport to the Miami International Airport, where the pilot picked up 2 passengers and flew uneventfully to Cuba. He performed a preflight inspection of the airplane in Cuba and noted both auxiliary fuel tanks were more than half full and both main tanks were half full. The flight departed, climbed to 8,000 feet; and was normal while in Cuban airspace. When the flight arrived at TADPO intersection, he smelled strong/fumes of fuel in the cabin. The engine instruments were OK at that time. The flight continued and when it was 10-12 miles from Marathon, he smelled something burning in the cabin like plastic material/paper; engine indications at that time were normal. He declared "PAN" three times with the controller, and shortly thereafter the right engine began missing and surging. He then observed fire on top of the right engine cowling near the louvers. He secured the right engine however the odor of fuel and fumes got worse to the point of irritating his eyes. He declared an emergency with the controller, began descending at blue line airspeed, and the fumes/odor got worse. Approximately 5 minutes after the right engine began missing and surging, the left engine began acting the same way. He secured the left engine but the propeller did not completely feather. At 400 feet he lowered full flaps and (contrary to the Pilot's Operating Handbook and FAA Approved Airplane Flight Manual) the landing gear in preparation for ditching. He intentionally stalled the airplane when it was 5-7 feet above the water, evacuated the airplane with a life vest, donned then inflated it. The airplane sank within seconds and he was rescued approximately 20 minutes later. The pilot first reported 4 months and 19 days after the accident that his passport which was in the airplane at the time of the accident had burned pages. He was repeatedly asked for a signed, dated statement that explained where it was specifically located in the airplane, and that it was not burned before the accident flight; he did not provide a statement. Examination of the airplane by FAA and NTSB revealed no evidence of an in-flight fire to any portion of the airplane, including the right engine or engine compartment area, or upper right engine cowling. Examination of the left engine revealed no evidence of preimpact failure or malfunction. The left magneto operated satisfactorily on a test bench, while the right magneto had a broken distributor block; and the electrode tang which fits in a hole of the distributor gear; no determination was made as to when the distributor block fractured or the electrode tang became bent. The left propeller blades were in the feathered position. Examination of the right engine revealed no evidence or preimpact failure or malfunction. The right hand stack assembly was fractured due to overload; no fatigue or through wall thickness erosion was noted. Both magnetos operated satisfactorily on a test bench. The right propeller was in the feathered position. An aluminum fuel line that was located in the cockpit that had been replaced the day before the accident was examined with no evidence or failure or malfunction; no fuel leakage was noted.

The pilot was aware of thunderstorms along his route of flight. He paralleled a line of storms for about 20 minutes looking for a hole in the storms to penetrate, without any success. He turned, and climbed to an altitude of 13,500 feet. He noticed what seemed to be an opening to the south, and turned southbound, through the hole, for about 2 or 3 miles, and then the hole closed. He turned the airplane to the right to reverse course, when he inadvertently penetrated a cell. At this point he said he "lost control of the airplane, and was turned upside down…...heading straight down towards the ground...…traveling at a high rate of speed..….the airspeed indicator was pegged." At an altitude of about 2,000 feet, he was able to level the wings, reduce power and raise the nose. He said he was then able to slow the airplane for a "controlled crash landing," straight a head in a sugar cane field. According to the Sheriff's Report, he struck the field in which the aircraft was lying in immediately after slowing the airplane. The distance from the initial impact area to where the airplane came to rest was about 75 yards.

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 flight (a Monroe County Mosquito Control operation) began at about 1740 edt to conduct low altitude spraying. When it did not return, a search was initiated. At about 0245, the aircraft was found in a remote area on water key near the town of Summerland Key, FL. Evidence at the accident scene suggested the aircraft struck 40 feet high mangrove trees with the left wing as the pilots were making a procedure turn to start another spray run. No preimpact failure or malfunction of the aircraft or engines was found. There were no known witnesses, but the accident was estimated to have occurred at about 2030 edt. Sunset was at 1952 edt. About 22 miles southwest at Key West, the 1750 weather was in part: 1,500 feet scat, 10 miles visibility, wind from 330° at 10 knots. Aprx 85 miles north-northeast, the wind was from 100° at 11 knots. Both pilots were killed.

After takeoff from Miami-Intl Airport, while climbing to a height of 100 feet, the left engine failed. The pilot stopped climbing and was attempting to land on the remaining wet runway when the airplane banked left, causing the left wing to drop and to struck the runway surface. Upon impact, the left main gear was torn off. The airplane went out of control, crash landed and came to rest. All 33 occupants were evacuated safely while the aircraft was damaged beyond repair.

Shortly after takeoff from Marathon Airport, while in initiale climb, both engines failed simultaneously. The aircraft stalled and crashed into the sea few dozen yards off shore. The pilot was uninjured and quickly rescued while the airplane was lost.

The crew was completing a positioning flight from Havana to Miami for the purpose of maintenance, the propeller to be adjusted. While cruising along the Keys, a distress call was received. The airplane apparently crashed into the Strait of Florida, between Key West and Marathon. SAR operations were conducted but eventually suspended few days later as no trace of the aircraft nor the crew was ever found.

Shortly after a night take off from runway 07, while in initial climb, the four engine aircraft went out of control and crashed into the sea some 3 miles off shore. All four crew members were killed.