Document ID: chunk:federal_register_of_legislation:F2023C00696:body:0:p56
Version: federal_register_of_legislation:F2023C00696
Segment Type: other
Provision Reference: 
Character Range: 216620–220047

must indicate:
                           (a) INS/IRS; and
                           (b) AUSEP, RNP10 or RNP4.
                        3 CEP tolerance is a circle of radius:
                           (a) 3 NM on departure, or 4 NM at each update; and
                           (b) expanding at a rate of 3 NM per hour since departure or update, to a maximum of 14 NM radius.
                        4 Any lateral separation diagram so produced must be approved by the ATS provider.
                        5 Unless informed otherwise, ATC may assume update when 1 of the following occurs:
                           (a) aircraft passage within 180 NM of 2 DME stations for a DME/DME fix where the position lines cross at an angle between 30° and 150°;
                           (b) aircraft passage within 25 NM of a collocated VOR/DME beacon;
                           (c) aircraft passage over a VOR beacon at or below FL200.
± 30 NM Cross track     Aircraft flight notification must indicate:
                        (a) INS/IRS; and
                        (b) AUSEP, RNP10 or RNP4.
±15 NM Cross track      1 Aircraft flight notification must indicate:
                           (a) INS/IRS; and
                           (b) AUSEP, RNP10 or RNP4.
                        2 The update interval (that is, the flight time since departure or a waypoint suitable for updating present position) does not exceed:
                           (a) for aircraft equipped with single INS/IRS — 3 hours; or
                           (b) for aircraft with 2 or more INS/IRS — 5 hours.

10.8.3.10     The following tolerances are applicable to visual tracking and position fixing:
Table 10.8‑4
Conditions                          Tolerance
By day—powered aircraft             0 to 2,000 FT AGL       ±1 NM
2,001 to 5,000 FT AGL               ±2 NM
5,001 to 10,000 FT AGL              ±4 NM
By day—non-powered glider aircraft  0 to 10,000 FT AGL      ±5 NM
By night                            0 to 2,000 FT AGL       ±2 NM
2,001 to 5,000 FT AGL               ±3 NM
5,001 to 10,000 FT AGL              ±5 NM
By day and night                    10,001 FT AGL to FL200  ±8 NM
FL201 to FL300                      ±12 NM
FL301 to FL400                      ±16 NM

10.8.3.11     The following miscellaneous tolerances are applicable:
Table 10.8‑5
Means of Position Fixing  Tolerance  Conditions
Navigation Training       20 NM CEP  Flight Notification specifies SAN/NAVEX or FTS/NAVEX.
                                     Allows for along track and cross-track errors.
Dead reckoning            ± 12°
                          ± 9°       Initial track guidance has been provided by NDB, VOR, or TACAN and there is no subsequent change in track.
Flight path monitoring    ± 9°          1. Aircraft is observed on the ATS surveillance system to maintain track.
                                        2. Tolerance applied from the edge of a circle of 5 NM centred on the last observed position.
                                        3. When using radar, the distance from the radar site is less than 200 NM.

Section 10.9:   Separation Standards—Applicable to En-route Area Navigation by Aircraft Using Inertial Navigation Systems

10.9.1              Introduction

10.9.1.1         This section is concerned with the horizontal (that is, lateral and longitudinal) separation standards to be employed by ATC in respect of aircraft