John Heddles
@john-heddles
Customer
Famed Member
Joined: May 14, 2016
Last seen: Jun 12, 2026
Topics: 2 / Replies: 963
Reply
zero fuel weight ballast

For some larger aircraft, depending on how the weight and balance limits are set up, centre tank fuel could get tangled up with ZFW. However, at th...

7 years ago
Forum
Reply
Take off and landing charts

Suggest you post a couple of scanned completed charts. That way we can see, comment and help .. ?

7 years ago
Forum
Reply
Take Off charts type 1

Not quite sure what Take Off charts (Type 1) are. Perhaps you can post a scan of the particular chart which is causing you trouble ? [color=blue]...

7 years ago
Forum
Reply
Performance Exam Query's

Subject to any curious things the examiner might like, in which case Bob/Stuart will correct me, the following is the standard approach to things. ...

7 years ago
Forum
Reply
File format

However, if you run a google search on CAD package file formats, you will have more than enough reading to keep you occupied for a while.

7 years ago
Reply
Height/ altitude/elevation

[i][b]Pressure Height and Pressure Altitude are interchangeable terms - they refer to AMSL.[/b][/i] 'fraid that's not quite correct. Pressure he...

7 years ago
Forum
Reply
Interpolation accuracy in PEXO Performance exam

[color=blue][i][b]I have included the TAS and other such tables in the supplement because the CASA syllabus requires that you should be able to extrac...

7 years ago
Forum
Reply
Interpolation accuracy in PEXO Performance exam

I'll leave it for Bob/Stuart to comment on what the examiner wants these days. Obviously, if he wants to see interpolations to 5 decimals, then give...

7 years ago
Forum
Reply
Weight & Balance - Adding Weight

Our interest is in trying to help you get around your problem. If you post a scan of a couple of sample calculations, perhaps we can do just that ?

7 years ago
Reply
Weight & Balance - Adding Weight

If I may add some amplification to Bob's comments - (a) as part of the certification flight test process, the TPs make assessments based on the Sta...

7 years ago
Reply
Weight & Balance - Adding Weight

[color=blue][i][b]At this stage I am using a formula which doesnt take long to work out once the ZFW has been calculated but it doesnt get me an exact...

7 years ago
Reply
Weight & Balance - Adding Weight

Probably not much in the way of efficiency gains to be made, I'm afraid. On the other hand, once you have done the hard yards in (b), below, you cer...

7 years ago
Reply
Drift question

Your problem, on this occasion, is that you are misreading or misinterpreting what the question is trying to tell you. Especially when something is...

8 years ago
Reply
Answer discrepancy - Echo T/O Chart

hmmm ... perhaps my earlier eyeball run around the carpets might have been a tad casual. This time I have done what I should have done first off...

8 years ago
Forum
Reply
Answer discrepancy - Echo T/O Chart

[i][b]I'm also getting the same answer. Runway 09 with 20kt headwind gives 2900 kg MTOW, Runway 18/36 (with 20kt crosswind) also give me 2900kg...[/b]...

8 years ago
Forum
Page 45 / 65