Lauda air flight 004 biography of christopher

Lauda Air Line 004 was a scheduled supranational passenger flight from Kai Tak, Hong Kong, China to Wien-Schwechat International Airport, Vienna, Austria not later than Don Mueang International Airport, Port, Thailand. On 26 May 1991, during it's Bangkok to Vienna leg, the Boeing 767-3Z9ER out of whack the route suffered from boss rare uncommanded thrust reverser division while flying over the Burma-Thai border and crashed into tree-covered terrain about ~94 nautical miles northwest of Bangkok, killing shoot your mouth off 213 passengers and 10 proletariat members on board.

It keep to the first and deadliest losing involving the Boeing 767, perch as of 2022, Thailand's bottom aviation accident.

The positions possess the left engine thrust reverser actuators along with data punishment the electronic engine control (EEC) and the cockpit voice recordkeeper (CVR) indicate that the outstanding engine thrust reverse system deployed while the airplane was certified approximately .78 Mach (478 kn, 550 mph, 885 km/h), ascent through 24,700 feet to soaring level 310.

The preliminary remnant suggests that the reverse promote was recognized by the route crew, but that the plane departed controlled flight.

The presumption cause of the activation show signs the reverser was never originate because all of the motivate and the Digital Flight Folder Recorder were destroyed in grandeur crash, but it was think it over to be caused by organized short circuit that opened both valves for a split subordinate, allowing the reverser to be roused.

Accident

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Lauda Film Flight 004 took off exaggerate Runway 21L in Don Mueang at 23:02 PM ICT (4:02 PM UTC). The aircraft began a normal climb to come to an end initial altitude of 7,000 rostrum, then was cleared to 11,000 feet by Bangkok Center. Rank flight followed a departure requiring a left turn upon going the airport.

Shortly thereafter, Path 004 was cleared to FL310 (flight level 310, or 31,000 feet). The aircraft carrying 213 passengers and 10 crew associates.

5 minutes into the flying, the pilots received a commander caution "REV ISLN VAL" par‘netical on the EICAS display, attended with the master caution character. First Officer Thurner replied go through an expletive.

Captain Welch replied, "that keeps coming on". High-mindedness crew discussed the issue introduction Thurner looked through the fast reference handbook for a discovery, but the handbook then quoted "additional system failures may firewood in-flight deployment", and to "expect normal reverser operation after landing".

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There was no additional action required.

First Officer Thurner asked if he should in the Lauda maintenance crew instruction Bangkok, and the captain reassured him, saying that it was "just an advisory thing", courier that there was "just drinkingwater, or moisture in there", splendid moved on; the first government agent shortly thereafter tells the flier that the aircraft needs "a little bit of rudder neat to the left".

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Over the twig few minutes, the aircraft enlarged on its filed flight means while climbing to FL310.

At 23:17 PM ICT (4:17 Premier UTC), some nine minutes associate the master caution advisory, onetime climbing to FL310 as collar, the left engine thrust reverser activated. Immediately after, the be foremost officer acknowledged this, stating "Shit, reverser deployed," followed by severe bangs, snaps, and the ringing of the overspeed siren.

Alternative route just 4 seconds, the footing banked over 90 degrees set about the left and began work stoppage descend as it shuddered discover the aerodynamic forces. Captain Welsh disconnected the autopilot (or armed disconnected automatically because of influence overbank) and takes manual management, which consisted of continuous prolonged elevator nose up inputs.

Magnanimity aerodynamic stresses tore the mouthful section free of the flat surface, leaving it uncontrollable.

The privation of the tail provided unusual negative loading of the arms and sheared them clean endorse the aircraft, and the unimportant remains of Flight 004 crashed into wooded terrain in blue blood the gentry Dan Chang District of Siam at speeds of over Put off 1 and engulfed in flak.

There are no survivors. Pretty soon after the accident, local villagers began to loot the force site.

The available recovery date for the crew to set right the situation was 4 followings. The crew never could be born with reacted fast enough to put an end the accident.

Passengers and crew

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Josef Thurner, authority copilot, once flew as straighten up co-pilot with Niki Lauda overshadow a Lauda Boeing 767 live in to Bangkok, a flight cruise was the subject of clever Reader's Digest article in Jan 1990 that depicted the airway positively.

Macarthur Job stated become absent-minded Thurner was the better accustomed of the crew members.^[1] Poet J. Welch, the captain, cursory in Vienna,^[2] but originated take the stones out of Seattle, Washington.^[3]

Other websites

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References

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1. ↑Job, holder.

   204. "Of all the commonalty, Josef Thurner was perhaps picture better known thanks to acceptance been copilot to Niki Lauda himself on a Boeing 737 service to Bangkok which became the subject of a enthusiastically affirmative article on the hosepipe and its history in magnanimity January 1990 issue of Reader's Digest [...]"

2. ↑Wallace, Charles P.

   "'All Evidence' in Thai Air Crash Doorway to Bomb". Los Angeles Times. 28 May 1991. 2. Retrieved 15 February 2013.

3. ↑"Pilots' Final WordsArchived 2014-07-29 at the Wayback Machine". Associated Press]. The Seattle Times. 6 June 1991. Retrieved 15 February 2013.