The air accident of a Boeing 707 in Santa Cruz occurred on October 13, 1976. A cargo plane of the type Boeing 707-131F the US Jet Power , with a cargo carrier on behalf of Lloyd Aereo Boliviano of Santa Cruz de la Sierra to Miami performed should collide with buildings and objects shortly after take-off from El Trompillo airport in the initial climb until they hit a playing field in front of the Estadio William Bendeckcrashed. All three occupants of the machine were killed in the accident, and up to 110 people were reportedly killed on the ground. It is the worst aircraft accident in Bolivia.
The aircraft used on the flight was a Boeing 707-131F. It was the 48th Boeing 707 ever built with the serial number 17671. The machine made its maiden flight on June 30, 1959 and was delivered to its first owner, Trans World Airlines , on July 14, 1959 with the aircraft registration N744TW . The machine was finally sold on November 4, 1972 to the Swiss airline Phoenix Airways , where it went into operation as HB-IEG before the company's operating license was revoked in March 1974. On April 8, 1975 the machine was bought by the American Jet Power , which the Boeing with the new registrationN730JP allowed. On May 23, 1975 the machine was leased to the question flight. From June 10, 1975 to August 1975, the machine was leased to ARCA Aero Vias Columbianas , where the Boeing with the registration number HK-1773 was in operation. The leasing return then received its old registration number N730JP back, with which it remained in operation until the end. The aircraft was leased to Trans Global from March 1976 and from May 25, 1976 to Huns Air , and then again to Trans Global from August 1976 . In October 1976 the machine was leased to RODEL Enterprises , who commissioned theLloyd Aéreo Boliviano operated. The four-engine long-range - narrow-body aircraft was equipped with four turbine jet engines of the type Pratt & Whitney JT3C equipped.
Inmates and flight plan
There was only a three-person American crew on board the machine, consisting of the flight captain Charles Baldwin, the first officer Lee Marsh and the flight engineer Leslie Bennett. All three crew members were from the Miami metropolitan area . The plane was to be flown from Santa Cruz to Miami. A cargo flight from Houston, Texas to Santa Cruz had previously been carried out with her; On this flight, machines for oil production were transported with the Boeing.
The machine's take-off run at 1.30 p.m. from runway 32 of El Trompillo Airport was exceptionally long. After rotating , the Boeing hardly gained any altitude. It reached a height of six meters and grazed tree tops, roofs of houses and power lines. She tore a part of the building of Julio Gutierrez-primary school with, rolled to the left and went 560 meters past the runway end in inverted flight to the ground. In the collision with the school, the caretaker, his wife and three students who were in the building were killed. Most of the students were not harmed because they had lunch before the time of the accidentwent home. The wreck then skidded down Avenida de Ejercito, capturing and killing a group of people queuing outside a shop to buy paraffin . The machine finally slid onto a field in front of the Estadio William Bendeck at 1:32 p.m., on which two youth football clubs were playing against each other in front of spectators. The wreck went up in flames and parts of the wreckage flying around also damaged parts of the stadium. A number of spectators were killed, eight players who were in the locker room died from smoke gases. 50 people died on the street. Debris and corpses were scattered on the field, 40 deaths were reported. According to various reports, between 88 and 110 people were killed on the ground in addition to the three crew members.
Initial reports said that one of the machine's engines had failed after takeoff. Passers-by reported that an engine on the left wing had burned before the crash. The investigation into the accident was made more difficult by the fact that the flight data recorder was not operational at the time of the accident. When the cassette was opened, it was found that all of the tape was wrapped around the take-up spool. The three radio channels of the Cockpit Voice Recorder(CVR) contained some information, but the microphone channel in the cockpit area was not functional and the recording did not contain any usable information. During the investigation, a structural and an engine failure, malfunction of the flight control and system failures could be excluded as possible causes of the accident. The displays for the engine pressure ratio (EPR) showed 2.32, which is a setting for a start in dry thrust and thus with reduced power without the addition of distilled waterto the engine. The water valves were determined to be open at the time of impact, but it was not possible to determine with certainty whether the crew had attempted a dry-thrust take-off with distilled water in stock, or whether the take-off was with an engine pressure ratio (EPR) of 2.32 was performed, with the option to increase the thrust if necessary. The investigators stated that the cause of the accident was an error on the part of the crew, who had failed to select a mode with enough engine thrust. The accident was attributed to inadequate flight preparation, crew exhaustion and failure to abort take-off.
- Jet Power 707-Ops The final flight of N730JP, odljets.net
- 1976: Bolivian plane crashes in Santa Cruz, BBC
- Crash of a Boeing 707-131F in Santa Cruz: 113 killed, B3A – Bureau of Aircraft Accident Archives
- Accident report B707-131, N730JP , Aviation Safety Network
- Registration Details For N730JP (Jet Power) 707-131, planelogger.com