Document ID: chunk:federal_register_of_legislation:F2023C00696:body:0:p55
Version: federal_register_of_legislation:F2023C00696
Segment Type: other
Provision Reference: 
Character Range: 212031–216940

plus 1.25% of the slant range.  Controllers may use figures from the table below.
                                          DME Equipment Error Correction
Slant Range                               Correction
300 NM or less                            4 NM
220 NM or less                            3 NM
140 NM or less                            2 NM
60 NM or less                             1 NM

10.8.3.8         The following tolerances are applicable to short range navigation aids:
Table 10.8‑3
Navigation Aid            Tolerance for Precise Plotting  Tolerance for Manual Plotting  Conditions
ILS Localiser Front Beam  ± 2.4 °                         ± 2.5°                         Within 25 NM except:
                                                                                            1. Above 2,000 FT AGL, within ±5° of course line 25 NM;
                                                                                         2.    Below A050 30 NM;
                                                                                         3.    A050 and above 50 NM.
VOR radials (or TACAN)    ± 5.2°                          ± 5.5°                         Range (based on height above the navaid):
                                                                                         Below 5,000 FT 60 NM
                                                                                         5,000 to 9,999 FT 90 NM
                                                                                         10,000 to 14,999 FT 120 NM
                                                                                         15,000 to 19,999 FT 150 NM
                                                                                         At or above 20,000 FT 180 NM*
                                                                                         Note: For published lateral separation diagrams that are displayed for controller reference, a maximum range of 150 NM must be used.
                                                                                         The tolerance can be applied outside the listed range when an inbound aircraft has reported established on the VOR/TACAN.
NDB/Locator               ± 6.9°                          ± 7°                           Range as per ERSA.
DME arc                   ± 2.5 NM                        ± 2.5 NM                       Includes DME equipment error.
Localiser Equivalence     ± 1 NM                          ± 1 NM                         The aircraft must be:
                                                                                           (a) established on 1 of the following approaches to a runway:
                                                                                              (i) Area Navigation — Global Navigation Satellite System (RNAV (GNSS));
                                                                                              (ii) Required Navigation Performance Approach (RNP APCH);
                                                                                              (iii) Required Navigation Performance Authorisation Required Approach (RNP AR APCH); and
                                                                                           (b) within 25 NM of the runway threshold; and
                                                                                           (c) at or inside the Initial Approach Fix (IAF) for the runway; and
                                                                                           (d) aligned with the centreline of the runway.

10.8.3.9         The following circular error of position (CEP) and cross track tolerances are applicable to long range navigation systems, subject to the conditions specified:
Table 10.8-4
Tolerance            Conditions
25 NM CEP               1 Aircraft flight notification must indicate RNP10 or RNP4.
                        2 Only useable for separation with the 25 NM CEP tolerance of another RNP10 or RNP4 aircraft.
                        3 1 NM buffer between tolerances is not required.
14 NM CEP               1 Not useable in airspace designated OCA.
                        2 Aircraft flight notification must indicate AUSEP, RNP10 or RNP4.
7 NM CEP                1 Not useable in airspace designated OCA.
                        2 Aircraft flight notification must indicate GPSRNAV or GPSOCEANIC.
Expanding formula       1 Not useable in airspace designated OCA.
                        2 Aircraft flight notification 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