B777 glide landing at Heathrow

[4Greens]

Was curious to know what changes to operating procedures were instigated as a result of this accident due to ice in the fuel system.

[Teddy Robinson]

Try ... reading the report perhaps ?

[wiggy]

Well FWIW and as I recall it the temporary solution was a requirement for the selection of full power for ten (?) seconds shortly prior to top of descent and then a further requirement to ensure idle power was maintained for a minimum period of time (? 30 seconds) at some point during the decent itself - not certain about absolute timings I'm afraid, that's all gone from the old short term memory.....

All that has now gone following the fitting of modified heat exchangers.

[4Greens]

Tried to get the final report on the AAIB website with no success, hence my appeal to PPRUNE.

[Feathers McGraw]

Air Accidents Investigation: G-YMMM Report Sections (http://www.aaib.gov.uk/publications/formal_reports/1_2010_g_ymmm/g_ymmm_report_sections.cfm)

This should go directly to a page allowing the various report pdfs to be downloaded.

4greens? Ex Slender delta crew perhaps?

[RobShan]

At the design level, the intake to fuel heat exchange unit was modified. In this photo (http://en.wikipedia.org/wiki/File:Ice-Trent-800-Heat-Exchanger_inset.jpg) the inlet pipes protrude a few millimetres from the plate behind. In the redesign as I recall, they were made flush. I can't remember why this worked, but apparently it did.