Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

Controlling RVR

Tech Log The very best in practical technical discussion on the web

Controlling RVR

Old 1st Oct 2023, 10:33
  #1 (permalink)  
Thread Starter
 
Join Date: Jun 2018
Location: Uk
Posts: 53
Likes: 0
Received 0 Likes on 0 Posts
Controlling RVR

I was talking to a captain about this. He told me that the only important RVR is the touchdown one as this is the legal one. Is this correct? The mid point and end point are advisory only. Does the take off RVR have to satisfy all 3 values as well?
Paulm1949 is offline  
Old 1st Oct 2023, 11:18
  #2 (permalink)  
 
Join Date: Dec 2003
Location: Tring, UK
Posts: 1,817
Likes: 0
Received 2 Likes on 2 Posts
Assuming you fly for a UK operator, all this information should be in your OM A. RVR requirements may depend on the type of approach/departure, what parts of the runway you are going to use and the actual visibility, so what you were told is incorrect as a blanket statement, although it may have applied to what you were doing at the time.

Once you get into LVOs, it becomes a bit more detailed with a fair amount of if/but/and, so worth a look.
FullWings is offline  
Old 1st Oct 2023, 13:26
  #3 (permalink)  
 
Join Date: Jan 2006
Location: Between a rock and a hard place
Posts: 1,262
Likes: 0
Received 0 Likes on 0 Posts
RVR for landing: Touch down has to be above minima. Mid-point 125 m. Stop-end: 75 m.

RVR for takeoff: All three RVR measurements have to be above minimum RVR for takeoff.

Operating under EASA rules.
172_driver is offline  
Old 1st Oct 2023, 13:53
  #4 (permalink)  
 
Join Date: Mar 2012
Location: Having a margarita on the beach
Posts: 2,395
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Paulm1949
I was talking to a captain about this. He told me that the only important RVR is the touchdown one as this is the legal one. Is this correct? The mid point and end point are advisory only. Does the take off RVR have to satisfy all 3 values as well?
Hi,

EASA Land?

AMC1 CAT.OP.MPA.305(a) Commencement and continuation of approach

ED Decision 2022/012/R

MINIMUM RVR FOR CONTINUATION OF APPROACH — AEROPLANES

(a) The touchdown RVR should be the controlling RVR.

(b) If the touchdown RVR is not reported, then the midpoint RVR should be the controlling RVR.

(c) Where the RVR is not available, CMV should be used except for the purpose of continuation of an approach in LVO in accordance with AMC10 CAT.OP.MPA.110.

GM1 CAT.OP.MPA.305 Commencement and continuation of approach

(…)

e) Where additional RVR information is provided (e.g. midpoint and stop end), this is advisory; such information may be useful to the pilot in order to determine whether there will be sufficient visual reference to control the aircraft during roll-out and taxi. For operations where the aircraft is controlled manually during roll-out, Table 1 in AMC1 SPA.LVO.100(a) provides an indication of the RVR that may be required to allow manual lateral control of the aircraft on the runway.

Always check Your OMA as it could be more restrictive (as ours is).

AMC1 SPA.LVO.100(a) Low-visibility operations and operations with operational credits

(…)The minimum RVR value specified in Table 1 or 2 should be achieved for all reporting points representative of the parts of the runway from the point at which the aircraft commences the take-off until the calculated accelerate-stop distance from that point.

Cheers.
sonicbum is offline  
Old 1st Oct 2023, 19:38
  #5 (permalink)  
 
Join Date: Dec 2003
Location: England
Posts: 117
Likes: 0
Received 0 Likes on 0 Posts
AMC1 CAT.OP.MPA.305(a) Commencement and continuation of approach

ED Decision 2022/012/R

MINIMUM RVR FOR CONTINUATION OF APPROACH AEROPLANES

(a) The touchdown RVR should be the controlling RVR.

(b) If the touchdown RVR is not reported, then the midpoint RVR should be the controlling RVR.

GM1 CAT.OP.MPA.305 Commencement and continuation of approach

(e)Where additional RVR information is provided (e.g. midpoint and stop end), this is advisory; such information may be useful to the pilot in order to determine whether there will be sufficient visual reference to control the aircraft during roll-out and taxi. For operations where the aircraft is controlled manually during roll-out, Table 1 (aeroplanes) in AMC1SPA.LVO.100(a) and Table 3 (helicopters) in AMC2SPA.LVO.100(a) provide an indication of the RVR (e.g. midpoint and stop end) that may be required to allow manual lateral control of the aircraft on the runway.
Stanley Eevil is offline  
Old 2nd Oct 2023, 14:39
  #6 (permalink)  
 
Join Date: Sep 2007
Location: EU
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts
For take-off - all sections used for take-off roll and RTO must be at or above minimums
For landing - as below:
On the website
https://www.easa.europa.eu/community...r-operations-0 you can find AWO IMPLEMENTATION MANUAL V1.2
(or download directly via the link: https://www.easa.europa.eu/community...0checklist.pdf
I have found the following text on p.21
3.5.2 Approach ban CAT.OP.MPA.305 and related AMC&GM.
(...)
5- Additional RVR information (e.g., midpoint and stop end) are advisory and they should allow the pilot to determine if sufficient visual reference exist to control the aircraft during roll-out and taxi.

Hope it helps
poldek77 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.