British Airways 777 lands short of runway

[Mal]

The initial report into the 'landing' has been released by the AAIB (Air Accidents Investigation Board) in the UK.

Just lists some quick information about the 'landng' and clears up a few myths/misconceptions about the flight.

Makes for some interesting reading:

Air Accidents Investigation Branch: Accident: Heathrow 17 January 2008 - initial report


The final report will make very interesting reading.

Also there are some good media articles floating around if you search for them.

 

[dot]

Not sure how reliable the bogger or the original poster is on the PilotsofAmerica forum, but it's an interesting read.

Leaked Detailed BA 777 Accident Investigation Update (Flightblogger)

Dot

 

[oz_mark]

Latest report:

http://www.aaib.dft.gov.uk/cms_resources/S3-2008 G-YMMM.pdf


Seems not much progress in tracking down the problem, but they seem to have a clue:

The high pressure (HP) fuel pumps from both engines have unusual and fresh cavitation damage to the outlet ports consistent with operation at low inlet pressure. The evidence to date indicates that both engines had low fuel pressure at the inlet to the HP pump. Restrictions in the fuel system between the aircraft fuel tanks and each of the engine HP pumps, resulting in reduced fuel flows, is suspected.

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[serfty]

Ice?

Heathrow crash investigators urge action over ice threat to planes | Business | guardian.co.uk

Here's the AAIB Interim Report report (1Mbyte .pdf):

• Accident to Boeing 777-236ER, G-YMMM

Summary

The investigation has shown that the fuel flow to both engines was restricted; most probably due to ice within the fuel feed system. The ice is likely to have formed from water that occurred naturally in the fuel whilst the aircraft operated for a long period, with low fuel flows, in an unusually cold environment; although, G-YMMM was operated within the certified operational envelope at all times.

 

[albatross710]

Ice?

Heathrow crash investigators urge action over ice threat to planes | Business | guardian.co.uk

Here's the AAIB Interim Report report (1Mbyte .pdf):

• Accident to Boeing 777-236ER, G-YMMM

I see in today's press that there is a recommendation for the engines to be run at high power for a period of each flight if the aircraft has been operated in exceptionally cold or low burn environments. This is intended to increase fuel flow and decrease the chance of water buildup.

 

[straitman]

I see in today's press that there is a recommendation for the engines to be run at high power for a period of each flight if the aircraft has been operated in exceptionally cold or low burn environments. This is intended to increase fuel flow and decrease the chance of water buildup.

This is all shades of using Carburettor Heat and/or monitoring of Cylinder Head temperatures in piston engine aircraft :!:

 

[albatross710]

Reading the incident report, it seems that it was a servicable, well maintained, well designed and skillfully piloted aircraft which came unstuck.

[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]Safety Recommendation 2008-047.[/FONT][/FONT]
[FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]It is recommended that the Federal Aviation Administration and the European Aviation Safety Agency, in conjunction with Boeing and Rolls-Royce, introduce interim measures for the Boeing 777, powered [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]by Trent 800 engines, to reduce the risk of ice formed [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]from water in aviation turbine fuel causing a restriction in the fuel feed system. [/FONT][/FONT]

The use of JetA1 with the anti-icing additives is a recommendation? (Milspec F34). Another fuel cost coming our way.

 

[serfty]

Saw this on FT:

Media

The ATC recording is worth a listen ...

 

[docjames]

Nice site.

Qatari responded really quickly - bet they got a decent view of what happened straight out their windows!

 

[samh004]

The ATC recording is quite cool, especially with the visuals showing a/c and vehicles on the ground.

Was the plane scrapped?

 

[mannej]

Yes, it is the only Hull-loss involving a 777 AFAIK.