Offsetting - time to make it official just about everywhere
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In some circumstances, SLOP is a complete and utter waste of time and effort.
Why?
Flying eastbound across Africa not all that long ago, EgyptAir was heard to be told by Khartoum to descend from FL330 to 290 due to crossing traffic.
The EgyptAir flight, clearly not liking this reasonable idea, simply went silent...no further contact was heard on the frequency.
SLOP....phooey
Fergetaboutit.
Why?
Flying eastbound across Africa not all that long ago, EgyptAir was heard to be told by Khartoum to descend from FL330 to 290 due to crossing traffic.
The EgyptAir flight, clearly not liking this reasonable idea, simply went silent...no further contact was heard on the frequency.
SLOP....phooey
Fergetaboutit.
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I've heard that over certain parts of the 'dark continent' a 500' departure from a cleared level is also used by some crews, along with an offset >2nm.
Slightly off topic, but ADS may become a requirement for reduced longitudinal separation, particularly when climbing/descending through the level of other similarly equipped aircraft, with less then the current longitudinal minimum.
Watch this space...
Slightly off topic, but ADS may become a requirement for reduced longitudinal separation, particularly when climbing/descending through the level of other similarly equipped aircraft, with less then the current longitudinal minimum.
Watch this space...
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Perhaps offsetting will evolve over time through natural selection where all the centerliners will eventually be killed off!
It reminds me of when in the 90's following a spate of collisions of fast jets at low level in the UK, it was suggested to the flight safety empire that they could halve the risk of collision by alternating odd and even squadron numbers flying at 500' and 250'.
Nothing happened of course, such a colmplex system would perhaps be far too difficult to administer, and the training value lost would not be justified by saving the odd aircraft!
Rather than persuading the cash critical airline industry to spend money on electric kit and software to enable offsetting, why not draw a couple of extra points on the map at each TP and just join a different set of dots?
It reminds me of when in the 90's following a spate of collisions of fast jets at low level in the UK, it was suggested to the flight safety empire that they could halve the risk of collision by alternating odd and even squadron numbers flying at 500' and 250'.
Nothing happened of course, such a colmplex system would perhaps be far too difficult to administer, and the training value lost would not be justified by saving the odd aircraft!
Rather than persuading the cash critical airline industry to spend money on electric kit and software to enable offsetting, why not draw a couple of extra points on the map at each TP and just join a different set of dots?
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Rather than persuading the cash critical airline industry to spend money on electric kit and software to enable offsetting, why not draw a couple of extra points on the map at each TP and just join a different set of dots?
I think some sort of built-in offset is inevitable, and suspect that it is being resisted for very much the same reasons proper security measures were resisted in the US, until they got the proverbial wet fish smacked across their faces six years ago - $$$$$. When the $$$ cost of not implementing it equals the $$$$ cost of continuing to use our current 'on centreline' procedures, things will change.
My guess is that it will be the civil suits served by some bottom-feeding lawyers representing the surviving relatives of some passengers killed in an incident similar to the head on collision in Brazil last year that will swing it, when they argue that the airline/FMS manufacturers/regulatory authorities/toilet cleaners at Boeing or Airbus did not provide a safety measure that it was known - and widely discussed (as in here on Pprune) - would increase safety margins.
I'm surprised it hasn't happened already over the Brazilian collision, and in this case, 'bottom-feeding lawyers' might actually achieve something for the good.
actually I have also been pushing offsetting for many years.. even posted on pprune about it.... makes incredible sense... glad this topic has raised its head again
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This was one of the early 'serious' issues covered by Pprune way back in its infancy. It would seem the archives have moved, for the links to the two original articles that Danny once had on the PPrune opening page (now gone), don't work any more.
Mods, newer readers to the site might like to see http://www.pprune.org/forums/showthr...=Lessons+Delhi
and http://www.pprune.org/forums/showthr...=Lessons+Delhi
if they're still accessible with some other link.
There are also a few other threads on the issue:
http://www.pprune.org/forums/showthr...=Lessons+Delhi
http://www.pprune.org/forums/showthr...=Lessons+Delhi
and there was quite a bit of discussion about offsetting in the thread about the midair in Brazil last year.
Mods, newer readers to the site might like to see http://www.pprune.org/forums/showthr...=Lessons+Delhi
and http://www.pprune.org/forums/showthr...=Lessons+Delhi
if they're still accessible with some other link.
There are also a few other threads on the issue:
http://www.pprune.org/forums/showthr...=Lessons+Delhi
http://www.pprune.org/forums/showthr...=Lessons+Delhi
and there was quite a bit of discussion about offsetting in the thread about the midair in Brazil last year.
