PPRuNe Forums - View Single Post - SID Climb Gradient : "Minimum or Average"
Old 10th February 2017 | 06:23
  #27 (permalink)  
john_tullamarine
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: ATPL
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From: various places .....
I wrote MIGHT.

Noted. My comment was not intended to criticise you at all, rather, I am always cognisant of posts being read by newchums, hence the clarification.

make decision based upon the sum of your experience

.. but why waste effort and all that experience when it would be far simpler, and a whole sight more valid and useful, to do (or have your operator do) the escape sums before hand ?

What I did say was that with OEI you should be on an approved EFP

Generally, that covers the V1 case. The big problem is no V1 failure, continue SID, noise stops well into the SID but well prior to a safe area height ...

In some cases, the operator will require all departures to be via the escape where the SID is too limiting. In all (ie most occasions) of the remaining cases, the ops engineers SHOULD have done the sums to get you out of trouble with a failure ANYWHERE along the SID flightpath. Unfortunately, this is not the case so often and the Commander is left holding the baby ..

and I'm obviously without doubt above the min gradient well maybe yes just hold at the end of it or pick up vectors

Maybe yes, maybe no ... and maybe the paragraph above is a better way to go ?

It's also an option to manoeuvre visually around the objects in VMC


If you have a couple of big rocky bits well to one side or the other, fine .. if you plan to eyeball it over the obstacles ... good luck and rather you than me. Generally, just not feasible due to the shallow climb gradients OEI.

Or fly straight out over the sea

Not much good if you are in tiger country and need to get past some nasty terrain before you see blue underneath ..

There are many valid options

I am a bit of a conservative .. but, I suggest, there is only one valid OEI option (unless you any departing in a flat desert area with nil rocky bits as far as the eye can see) and that is to do the OEI escape sums before departure. Generally, this is not feasible for the line pilot so it falls (rightly) on operator management.
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