BBC Homepage World Service Education
BBC Homepagelow graphics version | feedback | help
BBC News Online
 You are in: World: Americas
Front Page 
World 
Africa 
Americas 
Asia-Pacific 
Europe 
Middle East 
South Asia 
-------------
From Our Own Correspondent 
-------------
Letter From America 
UK 
UK Politics 
Business 
Sci/Tech 
Health 
Education 
Entertainment 
Talking Point 
In Depth 
AudioVideo 



The BBC's Paul Reynolds in Washington
"There's been one suggestion that passengers be told how old a plane is"
 real 28k

Thursday, 24 August, 2000, 03:11 GMT 04:11 UK
Design fault blamed for TWA crash
Janice Watson, whose daughter Jill was killed in the TWA crash
Some relatives wept as the conclusions were revealed
Design flaws in the Boeing 747 jumbo jet contributed to the explosion that destroyed TWA Flight 800 over the Atlantic Ocean four years ago, US safety officials have ruled.

At the end of its longest and costliest investigation, the National Transportation Safety Board (NTSB) faulted the aircraft's designers for placing heat sources beneath a fuel tank.

It said the probable cause of the disaster was an explosion of the centre wing fuel tank caused by inflammable vapours.

NTSB chairman Jim Hall
Jim Hall: Should passengers be told the age of aircraft?
The source of the ignition was most likely to have been an electrical short circuit, the NTSB said, adding that the wiring associated with the fuel quantity indication system may have carried the "explosive voltage" to enter the tank.

Boeing, the world's largest aircraft builder, had told the safety board it had found no evidence to support the idea that a "specific electrical system or component of the 747-100 fuel quantity indicating system ignited a fuel/air explosion".

All 230 people on board the New York-to-Paris flight were killed when it blew up off Long Island on 17 July 1996.

Wrongly assumed

NTSB chairman Jim Hall, summing up the findings, said the accident was not caused by a bomb or a missile, but by a chain of events "set in motion years before" by the manufacturers, and the Federal Aviation Administration (FAA), which regulates the aviation industry.

He said the FAA's design and certification policy wrongly assumed that "fuel tank explosions could be prevented solely by precluding all ignition sources".

wreckage from TWA flight 800
A design flaw caused the catastrophic explosion, say experts
On the grounds that aged wiring could have been a factor in the tragedy, Mr Hall also ordered a study to check whether older aircraft are more prone to disaster - and whether passengers should be told the age of the plane on which they were travelling.

He said the review, to be completed by 15 November, should look for a link particularly in cases where there were "catastrophic accidents and in-flight fires".

"We are extending the life of many of these aircraft well beyond what they put as their economic design life," Mr Hall said.

"Most people understand that as you get older, things degrade."

Search BBC News Online

Advanced search options
Launch console
BBC RADIO NEWS
BBC ONE TV NEWS
WORLD NEWS SUMMARY
PROGRAMMES GUIDE
See also:

22 Aug 00 | Americas
Search for TWA crash answers
01 Jun 00 | Americas
TWA missile theory tested
19 Nov 97 | Americas
FBI ends TWA crash inquiry
Internet links:


The BBC is not responsible for the content of external internet sites

Links to more Americas stories are at the foot of the page.


E-mail this story to a friend

Links to more Americas stories