Partnair Flight 394

Investigators found that during the two-week period in July 1989 the aircraft received a major overhaul in Canada by the airline's previous owner. Partnair Flight 394 was a chartered flight which crashed on 8 September 1989 off the coast of Denmark 18 km north of Hirtshals. The investigators charted the vibrations and found that two months before the crash, the vibrations stopped for two weeks. Therefore the rudder had made a violent movement as the accident unfolded.Partnair said that the F-16 fighter jet had been flying at a faster velocity and closer to the Convair than reported in the media. During the overhaul, the mechanic replaced one of the bolts/pins. The fighter pilot was startled by the sudden appearance of the aircraft and contacted Oslo air traffic control.

He said that some of the employees "maybe" had been to prior naming ceremonies, which he described as "quite exciting." Both pilots were very experienced, with close to 17,000 flight hours each.
This caused investigators to further scrutinize the tail of the aircraft. Berg was also the company's Flight Operations Manager.Before the flight, the crew found that one of the two main power generators had not worked since 6 September, and the mechanic who inspected the aircraft was unable to fix it. The investigators found that the tail failed at 22,000 feet.

As a result of this, the plane was delayed almost an hour, finally departing at 3:59 p.m.As the Partnair aircraft passed over the water at planned cruising attitude - 22,000 feet, a Norwegian General Dynamics F-16 Fighting Falcon fighter jet passed by it. All 50 passengers and 5 crew members on board the aircraft perished, making it the deadliest civilian aviation accident involving an all-Norwegian airline company.

Lua error in Module:Coordinates at line 668: callParserFunction: function "#coordinates" was not found. Once the financial problem was settled the crew was given permission to depart. This told the investigators that the aircraft disintegrated in the air. The aircraft, registered LN-PAA, was a 36-year-old Convair CV-580 operated by the charter airline Partnair. The mechanic who had inspected the aircraft on the day of the accident flight told the investigators that one of the aircraft's two main generators had failed and that he was not able to repair the faulty generator. Investigators found that the residue was not from a bomb, nor was it from a warhead, as there was not enough of it present. [1] It was also the highest death toll of any aviation accident involving a Convair 580. All 50 passengers and 5 crew members on board the aircraft perished, making it the deadliest civilian aviation accident involving an all-Norwegian airline company. At the time of the crash, there were 2 other Convair 580 in the Partnair fleet.At the time of the accident Partnair was in financial difficulty.

From the maintenance records investigators found that, 10 years prior to the accident flight, the cockpit voice recorder had been modified so that the CVR would use the aircraft's generator instead of the aircraft's battery if full power was applied for takeoff. If the rudder moved in a violent manner, the weights behind the doors would also move violently and hit the shroud doors. The vibrations stopped after the bolt/pin was replaced. In the Partnair crash it had recorded the start of the flight and stopped shortly before the aircraft took off. Therefore the jet, which would have broken the supersonic barrier at that point, had flown too close and at supersonic speed near the Partnair plane. When the investigators reviewed the maintenance records, they found that, during the overhaul, mechanics discovered wear on one of the four bolts/pins that connected the vertical fin to the fuselage. All 50 passengers and 5 crew members on board the aircraft perished, making it the deadliest civilian aviation accident involving an all-Norwegian airline company. Tveiten and Berg were close friends who had flown together for years.
In the Norwegian jurisdiction an aircraft is only allowed to take off if it has two operable sources of power.As the Partnair aircraft passed over the water at planned cruising attitude - 22,000 feet,As the aircraft neared the Danish coastline, 22,000 feet (6,706 m) over the With a rising level of vibration, a failure in the plane's tail section must have become evident to the crew.

Partnair Flight 394 was a chartered flight which crashed on 8 September 1989 off the coast of Denmark 18 km north of Hirtshals. Friedman said that the tags had more monetary value than the actual illegal parts. The particular FDR was able to record for hundreds of hours; the expert unspooled the foil and found that the needle had been shaking for months. As the generator was inoperative on this flight, this meant that power to the CVR cut out as the aircraft took off.Some initial speculation in Norwegian press stated that a bomb brought down Partnair. Half of the employees of the company's head office were on board.

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