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Text NOTAM production rules

...

NAV.BL.type

Corresponding Q codes (2nd and 3rd letters)

ILS or ILS_DME

QIC - if both the Localizer and the Glidepath components have a (E)TD associated with the Event

QID - if only its DME component has (E)TD associated with the Event

QIG - if only its Glidepath component has (E)TD associated with the Event

QIL - if only its Localizer component has (E)TD associated with the Event

QII - if only its MKR component has (E)TD associated with the Event and its (N)BL.NavaidComponent.markerPosition=INNER

QIM - if only its MKR component has (E)TD associated with the Event and its (N)BL.NavaidComponent.markerPosition=MIDDLE

QIO - if only its MKR component has (E)TD associated with the Event and its (N)BL.NavaidComponent.markerPosition=OUTER

QIY - if only its NDB component has (E)TD associated with the Event and its (N)BL.NavaidComponent.markerPosition=MIDDLE

QIX - if only its NDB component has (E)TD associated with the Event and its (N)BL.NavaidComponent.markerPosition=OUTER

MLS or MLS_DME

QIW

NDB or NDB_MKR

QNB - if NDB component (E)BL.class=ENR

QNL - if NDB component (E)BL.class=L

LOC or LOC_DME

QIN

DME

QND

MKR

QNF

VOR_DME

QNM

TACAN

QNN

VORTAC

QNT

VOR

QNV

DF

QNX

NDB_DME, TLS or OTHER

QXX

and

NAV.TD.operationalStatus

Corresponding Q codes (4th and 5th letters)

UNSERVICEABLE

AS

ONTEST

CT

INTERRUPT

LS

PARTIAL

AS

FALSE_INDICATION

XX

DISPLACED

CM

IN_CONSTRUCTION

XX

OTHER

XX   

Scope

Insert here AE. 

Items B, C and D

...

The following pattern should be used for automatically generating the E field text from the AIXM data: 

Image RemovedImage Added

Code Block
titleEBNF Code
collapsetrue
template = ["NAV.BL.name(1)"] "NAV.BL.type(2)" ["NEQ.BL.type(3)"] ["NEQ.TD.availability.signalType(4)"] [( "NAV.BL.designator(5)" | "RWY-" "NAV.BL.runwayDirection(5)")] \n ["NEQ.BL.frequency(6)"] ["NEQ.BL.channel(7)"] \n ["NEQ.BLTD.typeoperational status(38)"] ["NEQ.TD.availability.signalType(4)"] \n
 "NEQ.TD.operational status(8)" ","["\n" ["due to" "NEQ.TD.NavaidOperationalStatus.annotation(9)" "."] \n
{"\n" "NEQ.TD.NavaidOperationalStatus.annotation(10)" "."}.

Reference

Rule

(1)

The name of the Navaid shall be included if present in the NAV.BL data

(2)

Insert the type from the Navaid baseline, according to the following decoding rule:

NAV.BL.type

Text to be inserted in item E

VOR

"VOR"

DME

"DME"

NDB

If (E)BL.class=N then use the word "LOCATOR", otherwise use the word "NDB"

TACAN

"TACAN"

MKR

If used as NavaidComponent of an ILS or ILS_DME Navaid, then insert (N)BL.markerPosition first followed by "MKR", otherwise insert just the word "MKR"

ILS

"ILS"

ILS_DME

"ILS"

MLS

"MLS"

MLS_DME

"MLS"

VORTAC

"VORTAC"

VOR_DME

"VOR/DME"

DNB_DME

"NDB/DME"

TLS

"Transponder Landing System"

LOC

"LOC"

LOC_DME

"LOC/DME"

NDB_MKR

"NDB/MKR"

DF

"DF service (question)"

SDF

"SDF eqptSimplified Directional Facility eqpt"

OTHER

None

(3)

If the Navaid Baseline has several Navaid components and only one of its primary component NavaidEquipment has a NEQ.TD associated with the Event, then insert the type of that equipment, according to the following decoding rule:

NEQ.BL

Text to be inserted in Item E

DME

"DME part"

VOR

"VOR part"

TACAN

"TACAN part"

Glidepath

"GP part"

Localizer

"LOC part"

Azimuth

"azm signal"

Elevation

"elev signal"

SDF

"SDF eqptSimplified Directional Facility eqpt"

DirectionFinder

"DF service (question)"

NDB

If (E)BL.class=N then use the word " LOCATOR", otherwise use the word "NDB"

MarkerBeacon

If used as NavaidComponent of an ILS or ILS_DME Navaid, then insert (N)BL.NavaidComponent.markerPosition first followed by "MKR", otherwise insert just the word "MKR"

(4)

If NAV.BL is TACAN or VORTAC and its (TACAN)TD.availability.signalType is specified, then insert its value here.

(5)

The following rules apply:

  • If NAV.BL.type has the value ILS, ILS_DME, LOC, LOC_DME, MLS or MLS_DME, then insert the RunwayDirection.BL.designator of the associated NAV.BL.runwayDirection, if available;
  • Otherwise, insert the NAV.BL.designator, if available.

(6)

Apply the following rules:

NAV.BL.type

Use the following value

VOR, VOR_DME, VORTAC

(VOR)BL.frequency followed by its uom value

NDB, NDB_MKR, NDB_DME

(NDB)BL.frequency followed by its uom value

SDF

(SDF)BL.frequency followed by its uom value

any other

leave empty

(7)

Apply the following rules:

NAV.BL.type

Use the following value

VOR_DME, DME, NDB_DME

(DME)BL.channel

TACAN, VORTAC

(TACAN)BL.channel

any other

leave empty

(8)

Insert the NEQ.TD.operationalStatus decoded as follows:

NEQ.BL.availability/operationalStatus

Text to be inserted in Item E

UNSERVICEABLE

"unserviceable"

ONTEST

"On test, do not use. False indication possible."

INTERRUPT

"subject to interruption"

PARTIAL

"unserviceable" (note that this should only occur for TACAN components)

FALSE_INDICATION

"do not use, false indication"

DISPLACED

"displaced"

IN_CONSTRUCTION

"in construction, do not use"

OTHER

"operational status is affected"

(9)

If specified, insert here only the NEQ.TD.NavaidOperationalStatus.annotation that has propertyName="operationalStatus" and purpose="REMARK", translated into free text according to the following encoding rules.

(10)

Annotations shall be translated into free text according to the rules for annotations decoding.

...