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Old 26th March 2010 | 01:50
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safetypee
 
Joined: Dec 2002
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From: UK
The choice of landing runway appears to have been the shorter, but into-wind option. However, given the forecast gusts, the likely approach and landing speeds could have been higher than normal.

The investigation report could be interesting following recent research.
An overview of the issues is given in ‘Slippery When Wet’.

Re runway grooving; is runway 06 grooved? Is it a concrete surface, does it drain well?

The underlying Transport Canada research is in Joint Winter Runway Friction Measurement Program.

The specific trials on wet runways - Aircraft landing operations on wet runways, has some interesting conclusions:-

“… using the braking coefficients obtained during the tests on wet surfaces, indicates that the current operational dispatch factor of 1.92 for turbojet aircraft does not provide an adequate safety margin for landings on wet runways, particularly those with low texture or rubber contamination.”[/i]

"… current operational dispatch factor of 1.43 for turbopropeller aircraft does not provide an adequate safety margin for landings on wet runways.”
[i]

Has anyone been able to locate an on-line copy of the latest TC report - “Risk and Benefit-Cost Analyses of Procedures for Accounting for Wet Runway on Landing”?
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