what do you think of this SID
Thread Starter
Joined: Nov 2005
Posts: 314
Likes: 70
From: on the way to sea
first of all it uses heading and after that a fix - what happens in case of strong wind and slow aircraft? it is not clear what to do in case of r/t failure... and heading 179....and it is not connected to any airway....it simply stops at point modro. I haven't seen anything like that...so I'm asking if there are some examples in the world...just for comparison.
Joined: Feb 2002
Posts: 417
Likes: 20
From: D(Emona)
On AIP charts is says:
Comm failure procedure:
In case of radio failure climb on HDG 179deg, after passing R264 DOL turn left inbound DOL and enter holding. Climb to 8000ft MSL.
It is not connected to any airway because it is used only when radar vectored. To me the only questionable part is HDG to MODRO - I cannot see the RNAV requirement for this departure.
This departure was presumably established to shorten departure clearance (after departure climb straight ahead, at marker west turn left heading 180deg, further by radar..).
Comm failure procedure:
In case of radio failure climb on HDG 179deg, after passing R264 DOL turn left inbound DOL and enter holding. Climb to 8000ft MSL.
It is not connected to any airway because it is used only when radar vectored. To me the only questionable part is HDG to MODRO - I cannot see the RNAV requirement for this departure.
This departure was presumably established to shorten departure clearance (after departure climb straight ahead, at marker west turn left heading 180deg, further by radar..).
Thread Starter
Joined: Nov 2005
Posts: 314
Likes: 70
From: on the way to sea
comm failure procedure is written alright, but what to do with it? when will the aircraft, let's say a light one, commence approach? and what happens when due to heavy r/t plane passes modro point? will it follow r/t failure procedure?
Joined: Jun 2001
Posts: 889
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From: Australia
the only questionable part is HDG to MODRO
Again practically speaking, it seems unlikely that an aircraft without R/T failure would actually get that far on the SID ("after reaching 6000' expect further clearance" etc).
O8
Joined: Aug 2000
Posts: 1,695
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From: Egcc
kontrolor
They should follow the standard radio failure procedure for the state in question if not advised of any differences from standard in the airfield briefing notes.
Could be one of a couple of things.
1. Someone who knows about procedure design will be able to tell you what requirements need to be met regarding terrain separation limits during a SID procedure. This takes into account a certain error margin producing a 'funnel' which meets the minimum requirements, which presumably this procedure must comply with in order to be promulgated.
2. Heading could be a misprint and should read TRACK. Have had this before on Jeppesen charts, which take their info from the AIP.
PP
comm failure procedure is written alright, but what to do with it? when will the aircraft, let's say a light one, commence approach?
first of all it uses heading and after that a fix - what happens in case of strong wind and slow aircraft?
1. Someone who knows about procedure design will be able to tell you what requirements need to be met regarding terrain separation limits during a SID procedure. This takes into account a certain error margin producing a 'funnel' which meets the minimum requirements, which presumably this procedure must comply with in order to be promulgated.
2. Heading could be a misprint and should read TRACK. Have had this before on Jeppesen charts, which take their info from the AIP.
PP
