Ba 777
03-03-2008, 05:40 PM
#1
Gets Weekends Off
Thread Starter
Joined APC: Sep 2005
Position: Retired 767 Captain
Posts: 548
Ba 777
I checked this on Snopes, but found nothing.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
03-04-2008, 08:44 AM
#4
Prime Minister/Moderator
Joined APC: Jan 2006
Position: Engines Turn Or People Swim
Posts: 39,273
Sounds like Enquirer material, but it's not totally far-fetched. The DoD spends a lot of money hardening critical systems against electromagnetic spectrum attacks.
There's little doubt that at close range the SPY-1 phased-array radar on Ticonderoga class cruisers or Arleigh Burke class destroyers could interfere with various systems on a fly-by-wire civilian aircraft.
There's little doubt that at close range the SPY-1 phased-array radar on Ticonderoga class cruisers or Arleigh Burke class destroyers could interfere with various systems on a fly-by-wire civilian aircraft.
03-04-2008, 12:58 PM
#5
On Reserve
Joined APC: Feb 2008
Posts: 13
I'll bite.
Here is a link to the latest on this from the AAIB (British version of the NTSB):
http://www.aaib.dft.gov.uk/latest_ne...in_s1_2008.cfm
In the report they said the left engine thrust reduction happened ~ 7 seconds after the right engine. They also said the data shows the EECs slewed the fuel metering valves further open to attempt to increase thrust. So I would say the EEC was not the issue.
They also apparently found evidence of fuel pump cavitation on both engines (even though the plane had enough fuel on board).
What does it all mean? I think you're right. RF-induced failure, but not from a car below. It was an airliners.net pax who had video camera, iPod, and cell phone on.
Here is a link to the latest on this from the AAIB (British version of the NTSB):
http://www.aaib.dft.gov.uk/latest_ne...in_s1_2008.cfm
In the report they said the left engine thrust reduction happened ~ 7 seconds after the right engine. They also said the data shows the EECs slewed the fuel metering valves further open to attempt to increase thrust. So I would say the EEC was not the issue.
They also apparently found evidence of fuel pump cavitation on both engines (even though the plane had enough fuel on board).
What does it all mean? I think you're right. RF-induced failure, but not from a car below. It was an airliners.net pax who had video camera, iPod, and cell phone on.
03-04-2008, 03:59 PM
#6
Gets Weekends Off
Joined APC: Nov 2006
Posts: 168
I'm a little skeptical, but hey anything is possible.
One of the certification requirements for the airplane is the ability to operate normally in the presence of external EMI - especially critical systems such as flight controls and propulsion.
The EECs and all of the related wiring is heavily shielded to prevent such an event. It's possible that the ground on a shield or the EEC itself could be disconnected which could allow a stray signal to interfere with system operation.
One of the certification requirements for the airplane is the ability to operate normally in the presence of external EMI - especially critical systems such as flight controls and propulsion.
The EECs and all of the related wiring is heavily shielded to prevent such an event. It's possible that the ground on a shield or the EEC itself could be disconnected which could allow a stray signal to interfere with system operation.
03-04-2008, 05:54 PM
#7
Gets Weekends Off
Joined APC: May 2007
Position: B-747-400/8
Posts: 146
Originally Posted by rickair7777
There's little doubt that at close range the SPY-1 phased-array radar on Ticonderoga class cruisers or Arleigh Burke class destroyers could interfere with various systems on a fly-by-wire civilian aircraft.
http://www.f-16.net/news_article325.htmlI don't think a mobile blocking device would have enough power to mess up a 777... but sure makes you think.
Last edited by CRJ1000; 03-04-2008 at 06:35 PM.
03-04-2008, 06:06 PM
#8
Rubber dogsh#t out of HKG
Joined APC: Jan 2008
Position: Senior Seat Cushion Tester Extraordinaire
Posts: 620
Originally Posted by Roll Inverted and Pull
I checked this on Snopes, but found nothing.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
the engines were not running at all when the crash trucks arrived and the power loss was well before the road
03-04-2008, 06:36 PM
#9
Retired
Joined APC: Feb 2008
Position: whale wrangler
Posts: 3,527
Originally Posted by Roll Inverted and Pull
I checked this on Snopes, but found nothing.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
A friend sent this concerning the Boeing 777 that crashed short of the
runway in London a few weeks ago.
Well, the British aircraft accident investigation board has finally
come around to the conclusion that I made several weeks ago: the event was
RF-induced.
Prime Minister Dr. Gordon Brown's motorcade was passing under the
approach path of BA038. His security system utilised a RF transmitter to block out
any cell-phone triggered devices. Apparently this system has a two mile
range, and it caused the Boeing 777 EEC's (electronic engine controls) to sense a
"overboost" situation, thereby commanding a reduced-thrust situation for
the engines, simultaneously. Most interesting.
We'll see how Boeing and the BAA handle this one. This could be
potentially bad, in view of the simplicity of technology that the bad guys
could use to bring down an airliner.
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bgmann
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