FDC
Second European Operators’ Flight Data Monitoring Forum Meeting
Dave Jesse on January 25, 2013
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I’m writing this blog after the 2nd EOFDM Forum at Cologne. A very full day of presentations covering a wide range of topics leaves me with two outstanding thoughts…

Firstly, there were many measurements relating to runway overruns, either on takeoff or landing, where operators were trying to work out whether the aircraft can stop on the remaining runway available. Emirates presented an energy based approach, where the energy of the aircraft just before the V1 decision point was divided by the distance remaining. With conventional aviation units, this might have unpleasant looking units like lb x knots2 / ft but my guess is that it ends up as a force measurement. I have made a note to look at this again once I am back in the office.

The next approach was to work out the deceleration required to stop on the runway, this time from the point of rejection of a takeoff. This could be expressed in units of ft/sec2 or g. The latter conveniently relates to the Boeing braking action thresholds so can be loosely compared with runway condition. At first thought, I think this is a more convenient way to compute this type of parameter and it has the advantage that it avoids having to know the mass of the aircraft which is not always available.

All in all, something to get the grey matter stirring.

Secondly, the conference saw the last international presentation for my old friend Dave Wright of the UK CAA. Dave has been a mainstay of the Flight Data Monitoring world for some 35 years and I firmly believe that the art and science that is FDM has been advanced in good measure as a result of his enthusiasm and guidance.

Before we risk getting serious, I should point out that Dave has plans to write the authoritative history of FDM, and I can only hope that this effusive praise may get me a good mention!

TTFN
Dave