Lauda Air Flight 004 was an international passenger flight that crashed due to a thrust reverser deployment of the number one engine, in flight. May 26 is the 146th day of the year in the Gregorian calendar (147th in leap years). ... 1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ... The Boeing 767 is a commercial passenger aircraft manufactured by Boeings Commercial Airplane division. ... Lauda Air is an airline based in Austria. ... Lauda Air is an airline based in Austria. ... KLM Fokker 70 with reverse thrust applied. ... An engine is something that produces some effect from a given input. ...

On May 26, 1991, about 2310 local time, Flight 004 (originating from Hong Kong's Kai Tak Airport), a Boeing B-767-3Z9ER, registration OE-LAV, ship name Wolfgang Amadeus Mozart, took off from Old Bangkok International Airport (now Don Mueang International Airport) for its flight to Vienna International Airport with 213 passengers and 10 crew, under the command of Capt. Thomas J. Welch and First Officer Josef Thurner. May 26 is the 146th day of the year in the Gregorian calendar (147th in leap years). ... 1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ... Hong Kong International Airport, popularly known as Kai Tak Airport (Chinese å•Ÿå¾·æ©Ÿå ´ Pinyin: Qǐdé, WG: Chi-te) was the international airport of Hong Kong until July 6, 1998. ... The Boeing 767 is a commercial passenger aircraft manufactured by Boeings Commercial Airplane division. ... Wolfgang Amadeus Mozart (baptized as Johannes Chrysostomus Wolfgangus Theophilus Mozart; January 27, 1756 – December 5, 1791) was a prolific and highly influential composer of Classical music. ... Don Mueang International Airport (IATA: DMK, ICAO: VTBD) (or also (Old) Bangkok International Airport) (Thai: , also Don Muang, Thai: ) is an airport in Bangkok, Thailand. ... Vienna Schwechat International Airport (IATA: VIE, ICAO: LOWW) (German: Flughafen Wien-Schwechat), located 18 kilometers (11 miles) southeast of Vienna, is the busiest airport in Austria. ...

At 2322, Welch and Thurner received a visual advisory warning indicating that a possible system failure would cause the thrust reverser on the No. 1 engine to deploy in flight. Because the Emergency/Malfunction Checklist indicated that no action was necessary, Welch and Thurner didn't take any action.

At 2331, the thrust reverser on the No. 1 engine deployed while the plane was over the jungle near Ban Nong Rong (Uthai Thani Province), Thailand. Thurner's last recorded words are reported to have been, "Reverser's deployed!" Uthai Thani (Thai อุทัยธานี) is one of the provinces (changwat) of Thailand. ...

The 767 stalled in mid-air and disintegrated at 4000 ft (1200 m). None of the 223 passengers and crew survived. The explosion remains the worst aviation disaster on Thai soil to date.

Upon hearing of the crash, Niki Lauda, retired Formula 1 race driver and owner of the airline, flew to Thailand and personally visited the crash site, turning up information that led to the accident's cause, which was the failure of the thrust reverser isolation valve. He tested his findings in a Boeing 767 simulator in England and revealed those findings in a press conference shortly thereafter. A subsequent official investigation corroborated Lauda's findings, leading Boeing to modify the thrust reverser system to prevent similar occurrences. Andreas Nikolaus Niki Lauda (born February 22, 1949 in Vienna) is an Austrian entrepreneur, former Formula One (F1) racing driver and three-time F1 World Champion. ... Formula One - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... Motto: (French for God and my right) Anthem: God Save the King/Queen Capital London Largest city London Official language(s) English (de facto) Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq mi  Population    - 2005 est. ...

Similar accidents

• Hughes XF-11 - this aircraft also crashed due to a thrust reverser (in this case a reversible-pitch propeller) inadvertently deploying in flight.

The second XF-11 prototype in flight. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

External links

• PlaneCrashInfo.Com - Lauda Air Flight 004
• Aviation Accident Database - Lauda Air Flight 004
• Accident Report - Lauda Air Flight 004
• Grand Prix Hall Of Fame - Niki Lauda (Contains Lauda's role in Flight 004 investigation)