What does this mean?
Jet Blast Rat
Joined: Jan 2001
Posts: 2,081
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From: Sarfend-on-Sea
Re: What does this mean?
These are performance categories. Based on 1.3 times the stall speed in approach configuration (1.3 x VS0). Light aircraft will be cat A,the heaviest civvy aircraft cat D and military fast jets might be cat E.
Joined: Jan 2001
Posts: 171
Likes: 0
From: Manchester, England
Re: What does this mean?
hmmm, not quite correct - all depends on the approach speed - ie a B757-300 is a Cat D, where as an A330 is a Cat C, slower apprch speed you see. All avail in the Jepp or Aerad books...
have trust, have trust
TS
have trust, have trust
TS
Jet Blast Rat
Joined: Jan 2001
Posts: 2,081
Likes: 0
From: Sarfend-on-Sea
Re: What does this mean?
No problem Justin.
Tight slot - and approach speed is determined at least in part by VREF, which is 1.3 x VS0, so what you say is equivalent although I think you are wrong in the specifics. It is reference speed not approach speed (which might be higher) that is the determining speed.
If you look at the JAA ATPL suyllabus what I said was entirely correct. I admit that doesn't necessarily mean it is correct, but given the forum it probably means it is the best answer, and since yours is equivalent I still don't think I have been shown to be wrong. I did not teach performance so I could not say so definitively, but I did teach ATPL flight planning, and in the Jeppesen manual we used was a table of categories - all based on 1.3 x VS0.
Tight slot - and approach speed is determined at least in part by VREF, which is 1.3 x VS0, so what you say is equivalent although I think you are wrong in the specifics. It is reference speed not approach speed (which might be higher) that is the determining speed.
If you look at the JAA ATPL suyllabus what I said was entirely correct. I admit that doesn't necessarily mean it is correct, but given the forum it probably means it is the best answer, and since yours is equivalent I still don't think I have been shown to be wrong. I did not teach performance so I could not say so definitively, but I did teach ATPL flight planning, and in the Jeppesen manual we used was a table of categories - all based on 1.3 x VS0.
Thread Starter
Joined: Oct 2005
Posts: 13
Likes: 0
From: Manchester, UK
Re: What does this mean?
Ok thanks guys. Just one more question. For an IFR flight plan I have been told to put a relevant cross in the associated sections indicating emergency radios and any emergency equipment. Does this 'cross' indicate you have the item or not?
Thanks again.
Justin
Thanks again.
Justin
Only half a speed-brake
Joined: Apr 2003
Posts: 4,459
Likes: 136
From: Commuting not home
The for is copied to the computer "as it is", study it and you will see the result comes out as (FPL-GABC-IG-C170-.... so you cross out all that does not apply.
But better yet, ask the officer next time you submit one.
Yours,
FD
(the un-real)
But better yet, ask the officer next time you submit one.
Yours,
FD
(the un-real)
