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-   -   NAT Doc 007 January 2017 Important Changes (https://www.pprune.org/questions/591157-nat-doc-007-january-2017-important-changes.html)

767Capt 19th Feb 2017 14:38

NAT Doc 007 January 2017 Important Changes
 
http://flightservicebureau.org/wp-content/uploads/2017/02/NATDoc007-2017Edition-OPSGROUP.pdf

Anyone noticed the important changes on this revision especially the contingencies?
Careful reversing course in case of a diversion.

Basil 19th Feb 2017 17:53

Interesting. Seems more codified than I recollect.
Now retired so, not that it matters to me, but:


f) For deviations of greater than 10 NM, when the aircraft is approximately 10 NM from track,
initiate a level change of 300 ft.
If flying generally Eastbound (i.e. a magnetic track of 000° to 179°) and deviating left
(ie north) of track then descend 300 ft; if, however, deviating right (i.e. south) of track
then climb 300 ft.
If flying generally Westbound (i.e. a magnetic track of 180° to 359°) and deviating left
(i.e. south) of track then climb 300 ft; if, however, deviating right (i.e. north) of track
then descend 300 ft.
Why 300' and not 500'?

Hotel Tango 19th Feb 2017 17:58

So that if somebody screws up there's still 400ft?

ATC Watcher 19th Feb 2017 20:03

Almost HT, I would say because of the crossing tracks , if everybody diverts at same time ( i.e. due Wx ) on crossing you have someone 300ft down a FL , some opposite 300ft up their FL , so 400ft separation between them . Makes sense.

Basil 19th Feb 2017 20:11

Aahso, Got it (I think). That's why you lucky pax aren't flown by 75yo s ;)

john5432 20th Feb 2017 10:18

Do you know the exact date in when NAT Doc 007 was published in January, and also is it effective immediately or a certain future effective date?
Thank you.

767Capt 20th Feb 2017 16:03


Originally Posted by Basil (Post 9681190)
Interesting. Seems more codified than I recollect.
Now retired so, not that it matters to me, but:



Why 300' and not 500'?

300' is for greater than 10NM weather deviation required,
500' for other deviations requiring exiting tracks.
Must read the able vs unable to maintain altitude section carefully.
Also notice "should" vs must... I guess they wanted to give the PIC some leeway to be able to deviate from published procedure in case of fire/smoke etc..

tubby linton 20th Feb 2017 18:19

Ifalpa briefing document.http://ifalpa.org/downloads/Level1/S...form=hootsuite

fourgolds 21st Feb 2017 06:14

Did I miss something . The IFALPA bulletin ( see link) , says 500 ft ?

Hotel Mode 21st Feb 2017 08:24

300ft is for weather deviations. The IFALPA link is for in flight contingencies.

TKFIT 24th Feb 2017 02:45

Effect
 
Thus i cant find this publication on original icao website, do you know when these changes will take effect? Because it is still the 2016 version is on icao.int website.


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