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Old 12th Sep 2006, 05:35
  #27 (permalink)  
Mike Cross
 
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And I don't know how you measure the reliability of notams source, but is the https://www.notams.jcs.mil/ so bad?
This is the US Department of Defense NOTAM system and there is nothing whatever wrong with using it for briefing for flights originating in US airspace. However I suspect that's not what you are doing.

The trouble with that one is that it doesn't include the Q-line, the mechanism by which we determine the area of influence for any Notam. As such, that particular source isn't much use to me.
Wrong answer. If you select "RAW" rather than "Report" for the output this is what you get.
Y7744/04 NOTAMN
Q) EGTT/QXXXX/IV/NO/EW/000/020
A) EGTT B) 0403191445 C) UFN
D) H24
E) LFA 17, NIGHT SECTOR 3B (W) WARNING. CREWS ARE TO BE AWARE THAT TWO ANEMOMETER MASTS HAVE BEEN ERECTED AT THE FOLLOWING POSITIONS: N5352.26 W00312.09 N5351.36 W00317.40 N.B DURING THE HOURS OF DARKNESS THE TWO ANEMOMETER MASTS MAY NOT BE LIT
F) SFC G) 265FT AMSL
The Convention on International Civil Aviation, to which ICAO member States are signatories lays down the standards for NOTAM. Individual States are able to group NOTAM into series (in the above example Y7744/04 indicates it is Series Y) and decide which series are distributed internationally and which are not. In addition other States can decide which series they want to subscribe to. The whole system works on the basis that each State provides briefing services only for flights originating within its own airspace.

As an example, France, in AIP GEN 3.1.3.2 states:-
3.1.3.2 THE NOTAM
a) The NOTAM series
Depending on the subject, NOTAM are issued in the following series:
Series A: Information of a general international scope and concerning
more particulary long range flights (for international publication).
Series B: Information of a limited international scope and concerning
more particulary other flights (restricted international publication limited
to the European region).
Series D: containing information on other aerodromes used for international
flights. Publication is restricted to the countries involved within the
scope of SCHENGEN agreements (Germany, Austria, Belgium,
Denmark, Finland, Greece, Luxembourg, The Netherlands, Portugal,
Sweden, Iceland and Norway).
If therefore you took a NOTAM brief from outside the Schengen countries for a flight within France (e.g. you briefed from UK AIS for a flight to a small airfield in France, clearing customs at Calais) you would not see any of the Series D NOTAM.

If you want to make sure you are covered, your information should originate from the AIS of the State within whose airspace the flight originates. The correct way of briefing in the above example would be to take your briefing from a recognised UK source for the flight to Calais and from a French source for the onward flight from Calais to your destination.

Incidentally, there is EC legislation in the offing that will probably require providers of AIS information to be certified. The CAA's response to the "Common Requirements" in resect of AIS is here.

Mike

Last edited by Mike Cross; 12th Sep 2006 at 05:50.
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