Document ID: chunk:federal_register_of_legislation:F2023C00696:body:0:p45
Version: federal_register_of_legislation:F2023C00696
Segment Type: other
Provision Reference: 
Character Range: 145632–148555

the operational approval:

(i)            CTA — 5 hours multiple sensor or 3 hours single sensor; or

(ii)          OCA — 12 hours multiple sensor, 5 hours single sensor or 4.5 hours MNPS; or

(c)          RAIM loss or loss of integrity, for more than 5 minutes; or

(d)         operation of the GPS receiver in dead reckoning mode, for more than 1 minute; or

(e)         loss of the GPS receiver navigation function, for more than 1 minute.

10.6.9.3         If there is concern that the update criteria mentioned in paragraphs 10.6.9.2 (a) and (b) may not be met throughout the application of an RNAV standard, the time of the last update must be obtained from the pilot.

10.6.9.4         Separation based on RNP approval may only apply in RNP airspace.

10.6.10         Longitudinal Distance Separation Using ADS-C

10.6.10.1     When using ADS-C reports from FANS-1/A aircraft as the sole means of establishing and monitoring longitudinal distance separation standards, only those standards specifically identified as being approved for ADS-C may be used.

10.6.10.2     Longitudinal distance separation using ADS-C may be established by measuring the distance between:

(a)         the displayed positions of 2 or more FANS-1/A aircraft reporting by ADS‑C; or

(b)           an ADS-C report symbol of a FANS-1/A aircraft and the position of another aircraft determined by an alternative form of position fixing, such as radar, ADS-B, voice or CPDLC reports.

10.6.10.3     All system tool tolerances must be taken into account in any measurement.

10.6.10.4     When 2 FANS-1/A aircraft reporting by ADS-C are flying on the same identical tracks (same or opposite direction), the measurements may be taken directly between the 2 ADS-C symbols.

10.6.10.5     For a bend in track, the measurements may only be taken between each symbol and the turning point, not between the 2 symbols:

10.6.10.6     If 2 FANS-1/A aircraft are flying on diverging or converging route clearances, then measurements may be either to or from a common point on the route clearances:

or taken from where the abeam position of 1 aircraft intersects the route of the other.

10.6.10.7     When longitudinal distance separation is to be determined between FANS-1/A and non-FANS-1/A aircraft:

(a)         the measurement may only be commenced after receiving an ADS-C report from the FANS-1/A aircraft; and

(b)         the request for the voice report must be made as soon as possible after the ADS-C report symbol is displayed; and

(c)          this procedure may only be used when a distance greater than the minimum of the applicable standard is available.

10.6.10.8     When comparing an ADS-C report symbol from a FANS-1/A aircraft with a voice report from another aircraft, the measurement from or to the ADS-C symbol must be taken with reference to the beacon or waypoint reported by the other aircraft.

10.6.11         Distance