Decoding
Text NOTAM production rules
This section provides rules for the automated production of the text NOTAM message items, based on the AIXM 5.1.1 data encoding of the Event. Therefore, AIXM specific terms are used, such as names of features and properties, types of TimeSlices, etc:
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In general, the ICAO DOC 8126 and the OPADD rules shall be followed. These have not been copied in this document in order to avoid duplication with those documents. Only instructions that are specific to the AIXM encoding of this event are stated here.
Item A
The item A shall contain the AHP.BL.designator if AHP.BL.locationIndicatorICAO='YES'. Otherwise, the nationality letter(s) as defined in ICAO Doc 7910 followed by “XX” or “XXX”.
Q code
Insert here QMNLC
Scope
Insert the value ‘A’.
Lower limit / Upper limit
Use “000/999”
Geographical reference
Insert the coordinate of the ARP (AHP.BL.ARP.ElevatedPoint) of the airport, formatted as follows:
the set of coordinates comprises 11 characters rounded up or down to the nearest minute; i.e. Latitude (N/S) in 5 characters; Longitude (E/W) in 6 characters;
the radius value is “005”.
Items B, C and D
Items B and C shall be decoded following the common production rules.
If at least one APE.BL.availability.ApronAreaAvailability.timeInterval exists (i.e. the Event has an associated schedule), then all such Timesheet(s) shall be represented in item D according to the common NOTAM production rules for {{Item D, E - Schedules}}. Otherwise, item D shall be left empty.
Item E
The following pattern should be used as a base for generating the E field text from the AIXM data:
| Code Block | ||||
|---|---|---|---|---|
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template = ["(1)" "AHP.BL.type (2)" ("AHP.BL.name (3a)" | "AHP.BL.ARP (3b)")] \n "Apron" "APN.BL.name" "closed" "APE.BL.annotation (4)" "\n" \n
[ "due to" "APE.BL.availability.annotation (5)"]\n
{"\n" "APE.BL.annotation(6)" "."} ["."]. |
Reference | Rule | ||||||||
|---|---|---|---|---|---|---|---|---|---|
(1) | If AHP.BL.locationIndicatorICAO=YES, then ignore this branch. | ||||||||
(2) | Insert here the type of the airport decoded as follows
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(3) | a. If AHP.BL.name is not NIL, then insert it here. Otherwise b.insert here the text "located at" followed by the AHP.BL.ARP.ElevatedPoint decoded according to the text NOTAM production rules for aixm:Point. | ||||||||
| (4) | Insert here the APE.annotation note with propertyName="extent" and purpose="DESCRIPTION" translated into free text according to the decoding rules for annotations. | ||||||||
| (5) | Insert here the ApronElement/ApronAreaAvailability.annotation with propertyName="operationalStatus" and purpose="REMARK" translated into free text according to the decoding rules for annotations. | ||||||||
(6) | Other annotations of APE.BL shall be translated into free text according to the decoding rules for annotations. |
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