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The diagram below shows the AIXM classes, including the relevant data types and code lits, needed to encode that information.
To To encode the hours of operation of a radio navigation and landing aid In in AIXM 5, the NavaidOperationalStatus class has to be used.
It is possible to code the availability of a Navaid and also of a NavaidEquipment.
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The operationalStatus indicates the state of the navaid:
| OPERATIONAL | Operating normally. | |||||
| UNSERVICEABLE | Not available. | |||||
| ONTEST | On test, do not use. | |||||
| INTERRUPT | Expect interruptions of the signal. | |||||
| PARTIAL | Operating with limited capabilities. For example, used when just the DME part of a VOR/DME is working.
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| CONDITIONAL | Operative subject to published limitations or conditions. | |||||
| FALSE_INDICATION | Giving false indication, do not use. | |||||
| FALSE_POSSIBLE | False indication possible, use with caution. | |||||
| DISPLACED | Displaced | |||||
| IN_CONSTRUCTION | In Construction | |||||
| OTHER | Other |
For the AIP data set the default value for the hours of operation for a navaid will be 'OPERATIONAL'. Most of the others status are only relevant for an application of the Digital NOTAM concept.
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Coding Rules for Hours of Operation for Navaid
| Identifier | Data Encoding Rule | Justification | Data Verification Rule (UID) | Remarks |
|---|---|---|---|---|
| NAV-501 | Either the availability of the Navaid or the all the instances of NavaidEquipment the Navaid is composed shall only be coded. | Minimum AIP Data set | TBD | |
| NAV-502 | The availability of a NavaidEquipment shall only be coded in case of a Navaid composed of more than one NavaidEquipment, whereas at least one of them has a different availability than the others. | Data consistency | TBD | See open question above |
| NAV-503 | If for a Navaid composed of more than one NavaidEquipment, the availability of one of its NavaidEquipment is coded, the availability shall be coded for all other NavaidEquipment instances of that Navaid as well. | Data consistency | TBD | See open question above |
| NAV-504 | If a Navaid is composed of more than one NavaidEquipment, the availbilty is coded for the instances of NavaidEquipment are not exactly the same the availabililty of the Navaid shall not be coded. | Data consistency | TBD | See open question above |
| NAV-505 | If a Navaid is composed of one single NavaidEquipment the availability shall only be coded for the Navaid, | Data consistency | TBD | See open question above |
| NAV-506 | If a Navaid is composed of more than one NavaidEquipment all having exactly the same availability, the availability shall only be coded for the Navaid, (it is not necessary to copy it for each instance of NavaidEquipment). | Data consistency | TBD | See open question above |
Coding Examples
See topic Navaid [NAV]