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

EU-OPS Planning minima.

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

EU-OPS Planning minima.

Thread Tools
 
Search this Thread
 
Old 18th Nov 2020, 17:11
  #1 (permalink)  
Thread Starter
 
Join Date: Mar 2005
Location: UK
Posts: 551
Likes: 0
Received 0 Likes on 0 Posts
EU-OPS Planning minima.

Can anyone clarify this..?

Selected destination alternate has a CAT I ILS therefore NPA minima apply at the planning stage. Is it acceptable to use LOC (GS Out) mins?

OM-A states that LOC only can be considered NPA, but I'm not sure if this is only applicable when deciding available approach, or can it also be used for 'next one up'?
TotalBeginner is offline  
Old 18th Nov 2020, 17:12
  #2 (permalink)  
 
Join Date: Apr 2010
Location: IRS NAV ONLY
Posts: 1,230
Likes: 0
Received 0 Likes on 0 Posts
It's a NPA, so... yes.
FlyingStone is offline  
Old 18th Nov 2020, 18:43
  #3 (permalink)  
 
Join Date: Oct 2001
Location: England
Posts: 741
Likes: 0
Received 3 Likes on 1 Post
GM1 CAT.OP.MPA.185 Planning minima for IFR flights — aeroplanes

PLANNING MINIMA FOR ALTERNATE AERODROMES
Non-precision minima (NPA) in Table 1 of CAT.OP.MPA.185 mean the next highest minima that apply in the prevailing wind and serviceability conditions. Localiser only approaches, if published, are considered to be non-precision in this context. It is recommended that operators wishing to publish tables of planning minima choose values that are likely to be appropriate on the majority of occasions (e.g. regardless of wind direction). Unserviceabilities should, however, be fully taken into account.

I hope this helps

MM
Miles Magister is offline  
Old 18th Nov 2020, 21:10
  #4 (permalink)  
Thread Starter
 
Join Date: Mar 2005
Location: UK
Posts: 551
Likes: 0
Received 0 Likes on 0 Posts
Very helpful, thanks!

I guess my only reason for querying it is... If the ILS becomes unserviceable, it's unlikely that the LOC will be available. But then I suppose 'planning stage' is the key here.
TotalBeginner is offline  
Old 19th Nov 2020, 10:46
  #5 (permalink)  
 
Join Date: Dec 2010
Location: in a 5 m/s thermal
Age: 29
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Hi,

It can be the case that only the G/S fails so in that case the LOC only minima can be used for an NPA. (at EGBB rwy 33, there was a NOTAM for a while about drainage issues affecting the GP so only LOC was available)
But if you know that during preflight planning, then NPA RVR/VIS + 1 000 m /Ceiling shall be at or above MDH + 200 ft criteria needs to be satisfied. (from the same table as referenced before)

Altough if the ILS GP fails while you are on the way and you still have to LOC available, those minimas are applicable as you are now executing the flight.

h
hoduka 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



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.