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Accident | |
---|---|
Date | 2 May 1970 |
Summary | Water landing after fuel exhaustion due to pilot error |
Site | Caribbean Sea 18°N64°W / 18°N 64°W |
Aircraft | |
Aircraft type | Douglas DC-9-33CF |
Aircraft name | Carib Queen |
Operator | Overseas National Airways on behalf of ALM Antillean Airlines |
Registration | N935F |
Flight origin | John F. Kennedy International Airport, New York |
Destination | Princess Juliana International Airport, St. Maarten |
Occupants | 63 |
Passengers | 57 |
Crew | 6 |
Fatalities | 23 |
Injuries | 37 |
Survivors | 40 |
ALM Antillean Airlines Flight 980 was a flight scheduled to fly from John F. Kennedy International Airport in New York City to Princess Juliana International Airport in St. Maarten, Netherlands Antilles, on 2 May 1970.[ citation needed ] After several unsuccessful landing attempts, the aircraft's fuel was exhausted, and it made a forced water landing (known as ditching) in the Caribbean Sea 48 km (30 mi; 26 nmi) off St. Croix, with 23 fatalities and 40 survivors. The accident is one of a small number of intentional water ditchings of jet airliners.[ citation needed ]
The aircraft was a twin-engine Douglas DC-9-33CF, operated on behalf of ALM Antillean Airlines by Overseas National Airways (ONA), with an ONA aircraft and flight crew, and an ALM cabin crew. [1] Its serial number was 47407, its line number was 457, and was manufactured on 23 January 1969.[ citation needed ] It was registered in the United States with FAA tail number N935F. [2]
The flight carried 57 passengers and 6 crew.[ citation needed ] The flight crew consisted of Captain Balsey DeWitt (37), First Officer Harry Evans II (25), and Navigator Hugh Hart (35). [3]
Flight 980 made a normal departure from Kennedy Airport, and had an uneventful flight to the Caribbean, although the flight did need to descend to a lower altitude south of Bermuda to avoid thunderstorms, increasing the fuel consumption rate.[ citation needed ] After the flight was given descent clearance to 10,000 feet (3,000 m), regional air traffic control (ATC) advised that weather in St. Maarten was below landing minima, a set of criteria that determine whether landing is possible.[ citation needed ] The captain elected to divert to San Juan, but shortly thereafter, the tower at St. Maarten advised them that the weather had improved sufficiently for landing.[ citation needed ] The flight made an initial approach to St. Maarten, but failed to see the runway in time to line up for landing, and announced a missed approach.[ citation needed ]
Flight 980 then made a second landing attempt, but it, too, was unsuccessful because of alignment with the runway.[ citation needed ] After breaking off that approach, the crew made a third attempt, but the aircraft was too high to land safely.[ citation needed ] After assessing the weather and fuel situation, the crew elected to divert to St. Croix, and received a vector and clearance.[ citation needed ] At this point, the crew noticed a possible discrepancy between the fuel gauges and what had been computed as the amount of fuel remaining.[ citation needed ] The captain advised ATC of his intention to ditch the aircraft, and began a low approach over the water.[ citation needed ] Flight 980 ditched in the Caribbean Sea at 3:49 pm local time, 30 miles east of St. Croix. [4] [3]
Although the pilots flashed the seat belt signs just prior to ditching, confusion remained in the cabin as to when or whether the plane was to touch down.[ citation needed ] The public address system was not working on the plane, so the cabin were not given any warning of the impending ditching.[ citation needed ] Consequently, an unknown number of passengers and crew were either standing up, or had their seat belts unfastened, when the aircraft struck the water.[ citation needed ]
The sea was rough at the time as a result of the weather conditions. [4] The aircraft remained relatively intact after the water landing, but soon sank in about 5,000 ft (1,500 m) of water, and was never recovered.[ citation needed ] The accident resulted in 23 fatalities, as well as injuries to 37 of the 40 survivors.[ citation needed ] Both pilots and the navigator survived.[ citation needed ] The survivors were left bobbing in the turbulent and shark-inhabited sea in their life jackets until rescue came. [4] [5] Recovery of the survivors by helicopter began approximately 1+1⁄2 hours after the ditching, and the last survivor, the first officer, was picked up about 1 hour later. [3] The helicopters were guided to the rescue site by a Pan American Airways plane, whose pilot reported the ditching by radio, then circled the scene until help came to help guide rescuers. [4]
Rescue efforts included units from the U.S. Coast Guard, U.S. Navy, and U.S. Marine Corps, and a number of survivors were rescued by helicopter. [6]
The accident was investigated by the U.S. National Transportation Safety Board (NTSB).[ citation needed ] The report concluded that the cause of the accident was poor fuel management, complicated by the crew's inattention and distraction as a result of the weather situation and multiple diversions.[ citation needed ] Some specific issues cited include miscalculation of the rate of fuel consumption, misreading fuel gauges, and incorrect computation of the amount of fuel expected to be remaining at the time of landing.[ citation needed ] The NTSB report stated:
The Board determines that the probable cause of this accident was fuel exhaustion which resulted from continued, unsuccessful attempts to land at St. Maarten until insufficient fuel remained to reach an alternate airport. [3]
— NTSB report
The NTSB also concluded that the chances of survival in the accident were worsened by poor coordination among the crew before and during the ditching.[ citation needed ]
The recommendations in the report included adding "warn passengers" to the checklist of procedures for emergency landings and ditchings, requiring that flights not be dispatched without a working public address system, and phasing out an older type of seat belt then in use in favor of more modern designs.[ citation needed ]
DeWitt was fired six weeks after the ditching; he never piloted a plane again. [7] [8]
The ditching was also made into a film. The ditching of Flight 980 is featured in the first season 1 episode of The Weather Channel documentary Why Planes Crash . The episode, produced and directed by Caroline Sommers and entitled "Brace for Impact," aired in July 2009. It features an exclusive interview with Captain Balsey DeWitt. [5]
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