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Old 13th June 2008, 08:03 AM
Ahmet H Ahmet H is offline
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Default Plane loses way after pilot error

Plane loses way after pilot error over London


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A Polish Boeing 737 which came close to hitting another aircraft over London had the wrong co-ordinates entered into the flight computer.

The pilots then failed to understand instructions given in English by controllers, the Air Accidents Investigations Branch report revealed.

The Warsaw-bound plane weaved across the skies after taking off from Heathrow last June.

The co-pilot used standby instruments to return the plane to Heathrow.

According to the report the "serious incident" developed when a "simple" error in entering the aircraft's position went undetected.

The LOT airlines co-pilot entered an easterly longitude instead of westerly, causing the electronic navigation system to shut down.

But this was only noticed by the crew once the Boeing 737 carrying 95 passengers and crew had taken off from the west London airport.

The report said the pilot had difficulty "comprehending and communicating" with air traffic controllers and responded to instructions "slowly and erratically".

Investigators said: "A number of the exchanges were misunderstood, probably as a result of language difficulties."

It was also noted that "the pilots had little idea of their position and, after a few minutes, they were entirely dependent on air traffic controllers for their navigation".

Another aircraft was forced to change its course when the Polish plane flew too close but it was not close enough to be considered a "near miss" by investigators.

The co-pilot was forced to use standby instruments, and guided by controllers, landed the plane back at Heathrow.

The report said the incident demonstrated how reliant pilots have become on the Flight Management System.

Controllers were also criticised for failing to realise how severe the aircraft's navigational difficulties were.

BBC.co.uk
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Old 13th June 2008, 11:10 AM
Matt_L Matt_L is offline
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Reminds me of an Air New Zealand a320 incident in 2007 in Sydney with a similar thing occuring. Maintenance entered coordinates wrong into FMC and pilots didnt notice. http://www.atsb.gov.au/publications/...200700065.aspx
Air Nz pilots seemed to have responded better then this set of Polish crew despite their repeated strange accent to Sydney ATC
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Old 17th June 2008, 04:13 AM
Rod Sloan Rod Sloan is offline
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Wouldn't be the first time AirNZ have made this error. A DC10 and Mt Erebus springs to mind.
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Old 17th June 2008, 09:21 AM
Ken N Ken N is offline
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Quote:
Originally Posted by Matt_L View Post
Maintenance entered coordinates wrong into FMC and pilots didnt notice.
Wow....does maintenance have access to navigation data ??
That's a bit scary........
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Old 17th June 2008, 08:05 PM
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Raymond Rowe Raymond Rowe is offline
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Quote:
Originally Posted by Ken N View Post
Wow....does maintenance have access to navigation data ??
That's a bit scary........
Who else do you think loads the data.
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