Annex C: Height-Monitoring Performance Monitoring

C-5. GPH 204A Procedure. The DND/CAF RVSM monitoring procedures are published in GPH204A (advisory reference 3.2.g), Article 432, paragraph 9.

C-6. ADS-B Monitoring Procedures. Upon request, aircraft equipped with qualified ADS-B out systems will be height-monitored during normal operations, at RVSM altitudes in airspace where sufficient ADS-B data is available to the FAA to determine RVSM performance. The following requirements for monitoring must be met:

1. The aircraft must be equipped with a qualified ADS-B OUT System (v2);
2. The Flight ID/Call Sign transmitted by ADS-B must match the Flight ID/Call Sign specified in the flight plan; and
3. The operation must include at least 15 minutes of level flight at an RVSM flight level (FL290-FL410)

C-7. AGHME Monitoring Procedures. For aircraft not eligible for ADS-B Out monitoring, AGHME is an alternative. This ground-based system uses fixed location to automatically produce estimates of the geometric height of suitably equipped aircraft flying within the coverage area of an AGHME constellation. Overflight of ground-based height monitoring systems is transparent to the pilot. The following procedures should be used to maximize the chance of successful monitoring by an AGHME constellation:

1. Ensure that the aircraft is in RVSM-approved configuration.
2. Ensure that the aircraft has serviceable Mode S transponder. Without Mode S, there will be no measurement.
3. Obtain acceptance of a RVSM monitoring plan from the SSO OA.
4. Confirm with the DTAES RVSM Registration Coordinator that the aircraft is properly listed on the register (e.g., aircraft type, serial number, Mode S code, etc.).
5. Choose an AGHME location for monitoring (see AGHME Locations for choices and to verify operational status).
6. Plan flight on a route through the centre of the AGHME coverage area between FL290 and FL410.
7. Ensure that the flight plan provides for straight and level flight operation through the AGHME coverage area.
8. There are no special monitoring routings; therefore, do not ask ATC for any special treatment to accommodate AGHME measurement, as it is not an ATC responsibility.

C-8. The systems are continuously recording data. Prior coordination is not required to conduct a monitoring flight.

C-9. RVSM Approvals and Monitoring Status Results. Online reports for DND/CAF aircraft are available on the NAARMO website. A sample extract of the July 2019 NAARMO monitoring report for the DND and the CAF aircraft is provided in Figure C-1.

C-10. Height Monitoring Results. Confirmation of successful monitoring is stored in the abridged version of the NAARMO RVSM Approvals database. Monitoring status results will not be distributed. OAA, TAA, WSM and Operational staff may refer to this database for confirmation of a successful monitoring flight. If an aircraft does not appear in the approvals database, then this is an indication that the RVSM approval information for this aircraft is not complete, it is not an indication of an unsuccessful monitoring flight.

C-11. Non-Compliant Monitoring Report. If the TCCA RVSM Coordinator (Annex B, paragraph B-8) receives a notification from NAARMO that a DND/CAF aircraft was monitored and found non-compliant, the TCCA RVSM Coordinator has been instructed to send the notification to the following DND addressees:

• For action: SSO OA
• For information: DTAES RVSM Registration Coordinator (See Annex B, Paragraph B-6)

C-12. Upon receipt of a non-compliant report, the SSO OA point of contact for RVSM is responsible for taking the following actions:

1. The affected aircraft is to be restricted from RVSM operations.
2. The Wing is to be instructed to take actions that they deem appropriate to investigate all possible causes and correct the conditions causing the failure.
3. A successful monitoring flight must be flown on the affected aircraft to remove the RVSM restriction.
4. The DTAES RVSM Registration Coordinator must be notified when the non-compliance has been resolved.