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Forum: Tech Log

9th Dec 2008, 18:05

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

tournesol, to avoid any misunderstanding about...

tournesol, to avoid any misunderstanding about landing from Vref-5 at the threshold; I stress that the certification tests only demonstrate that a landing will be safe, and thus provides a margin of...

Forum: Tech Log

25th Nov 2008, 01:37

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

Stan Woolley #67, an interesting point, which is...

Stan Woolley #67, an interesting point, which is similar to many disparities in the industry. The problem might originate with:-
The aircraft certification standard may be pre regulatory change -...

Forum: Tech Log

24th Nov 2008, 01:44

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

tournesol Re – “If you have been in icing...

tournesol Re – “If you have been in icing conditions for an extended period of time, and at 50ft you fly below Vref, you will drop like stone”.
Your explanation perhaps states the obvious.
...

Forum: Tech Log

17th Nov 2008, 18:12

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

framer, et el “… to confirm that the 'Target...

framer, et el “… to confirm that the 'Target Threshold Speed' is indeed Vref+5 on a nice day, and not Vref.” (#37)

In my experience (several operators and manufacturers), ‘Target Threshold Speed’...

Forum: Tech Log

14th Nov 2008, 12:30

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

Stanley Eevil, - “…performance manuals assume a...

Stanley Eevil, - “…performance manuals assume a 15kt overspeed…”
I believe that you are perpetuating a widely held misbelief; see:- Landing performance of large transport aeroplanes....

Forum: Tech Log

13th Nov 2008, 17:44

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

FE Hoppy – “just be sure you have the extra...

FE Hoppy – “just be sure you have the extra landing distance required”
Absolutely correct! The extra 10 kts that pilots add without thought is equivalent to 300-500ft added to the actual landing...

Forum: Tech Log

12th Nov 2008, 12:52

Replies: 76

Vref & landing

Views: 62,815

Posted By safetypee

Spam Up. IIRC not all versions of ‘HS 125’ (if...

Spam Up. IIRC not all versions of ‘HS 125’ (if any) use the standard margins for calculating approach speed; thus you should follow what is written in the ‘particular’ aircraft’s manuals.

Normally...

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