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-   -   Missed Approach Climb Gradient question? (https://www.pprune.org/tech-log/457743-missed-approach-climb-gradient-question.html)

FlightPathOBN 22nd Jul 2011 18:32

Here is an online doc that uses BCOP to analyze the performance climbs for Westjet. http://www.smartcockpit.com/data/pdf...Operations.pdf

This climb out perf is all engine. Note how many variants, depending on temperature and altitude, have a climb rate below 2% All engine.
When you look at BCOP and the performance, hot places like Australia, many variants have EO climb gradients on the order of 1%. This offer no protection from the terrain and obstacle assessments, thus a custom terrain/obstacle clearance is needed, or the weights will be severely restricted.
http://operationsbasednavigation.com.../climbperf.jpg


You've dug yourselves into a hole if you want the world to believe that you can fly jets without having single engine performance that meets the departure and MAP profile.
Again, nothing in the criteria, including the procedures, addresses Engine out.

thats rather humorous, you telling Terpster he needs to understand how aircraft are certified. :ok:

galaxy flyer 22nd Jul 2011 22:21

Seriously, theficklefinger, you do seem to delight in publicly parading around showing that you would be out of your depth in a puddle.

theficklefinger 23rd Jul 2011 00:53

This isn't a debate...if you can't determine you single engine performance as it relates to the departure or MAP that you have to fly, then your either incompetent or lazy, or both.

FlightPathOBN 23rd Jul 2011 01:11


if you can't determine you single engine performance as it relates to the departure or MAP that you have to fly
so now it is as it "relates'


You've dug yourselves into a hole if you want the world to believe that you can fly jets without having single engine performance that meets the departure and MAP profile.
you stated it 'meets'

incompetent...no doubt you are very familiar with this term.

Does your grandmother know you are using her computer? :=

galaxy flyer 23rd Jul 2011 01:12

Agreed the Ficklefinger then, one question, how do you determine OEI flight path clearance for "close-in" obstacles? Those in the ICA or what used to be termed Zone 1.

theficklefinger 23rd Jul 2011 01:25

In the end when I talk single engine performance, you guys have no clue as to what I am talking about......

galaxy flyer 23rd Jul 2011 01:59

No argument there, after all why should performance engineers and check airman know anything on the subject.

aterpster 23rd Jul 2011 08:35

He sounds like another MSFS troll who has gotten loose on the forum.

aterpster 23rd Jul 2011 17:11

FAA AC120-91 is required reading for anyone who actually wants to understand this issue:

http://rgl.faa.gov/Regulatory_and_Gu...E/AC120-91.pdf

theficklefinger 24th Jul 2011 08:44

Aterp - I read it...your point?

aterpster 24th Jul 2011 09:14

theficklefinger:


Aterp - I read it...your point?
Repeating my previous post:


FAA AC120-91 is required reading for anyone who actually wants to understand this issue.
So, since you presumably read it, you either understand it and your questions are answered, or you don't understand it and nothing anyone can say on this forum will make a difference in that regard.

End of discussion.

theficklefinger 24th Jul 2011 10:34

Your blowing smoke, if you had a point you would have made it...

aviatorhi 24th Jul 2011 10:46

Fickle, if you are a pilot (which I highly doubt) I would be surprised if you are able to stay employed anywhere with the attitude that you have. Aterpster is right, but that is beside the point now, you don't belong in any sort of aviation, including simulated.

rudderrudderrat 24th Jul 2011 10:47

Hi ficklefing,

you guys have no clue as to what I am talking about......
Correct. Please rephrase your question.

theficklefinger 24th Jul 2011 11:05

You guys are idiots...no offense, but if you can't figure single engine performance...forget being a pilot, you shouldn't be on a technical aviation forum.

I suspect that we can survive without this poster's erudition - JT

rudderrudderrat 24th Jul 2011 11:17

Hi ficklefing,

You guys are idiots...no offense
- but I do take offence at that remark.

but if you can't figure single engine performance...
er...... I must have missed something, how many engines did you start with?

westhawk 24th Jul 2011 12:26


I suspect that we can survive without this poster's erudition - JT


I suspect JT is correct.

But I appreciated the opportunity presented to review AC 120-91 again aterpster. :)

This is probably the single most misunderstood and misapplied operational requirement I've encountered in my experience as a part 135 pilot. The very few pilots who do seem to grasp the concept are grossly outnumbered!

Anyway, it's been a treat!

aterpster 24th Jul 2011 15:30

westhawk:



But I appreciated the opportunity presented to review AC 120-91 again aterpster. http://images.ibsrv.net/ibsrv/res/sr...lies/smile.gif

This is probably the single most misunderstood and misapplied operational requirement I've encountered in my experience as a part 135 pilot. The very few pilots who do seem to grasp the concept are grossly outnumbered!

Anyway, it's been a treat!
If nothing else AC 120-91 sends a strong message that Part 121 and 135 operators that operate Part 25 birds really do need the expert assistance of performance engineers.

john_tullamarine 24th Jul 2011 21:49

For routine performance work, the work is relatively straighforward and the ops engineer doesn't need a great deal of anything other than

(a) a good understanding of what he/she is endeavouring to achieve

(b) good housekeeping and general attention to detail.

What is a problem is the (generally) pilot who views the work as being a lot more simplistic than it is. Perhaps this sort of view develops as a consequence of using the typically very simply presented RTOW tables in routine line operations ?

FlightPathOBN 24th Jul 2011 22:35

a pilot should be required to spend time in Operations with the people doing the loading plans..


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