ADR.OPS.B.045 Low-visibility procedures

LOW-VISIBILITY TAKE-OFF (LVTO) WITH AN RVR LESS THAN 125 M In addition to the low-visibility procedures which are required for LVTOs, the following should also apply to LVTOs with an RVR less than 125 m:

(1)if an ILS signal is used for lateral guidance, the ILS localiser signal meets the requirements for category III operations including the availability of a standby transmitter; and

(2)if an ILS signal is used, the low-visibility procedures should include protection of the ILS-sensitive area.

RUNWAY CENTRE LINE LIGHTS The specifications for the required runway centre line lights are contained in CS ADR-DSN.M.690.

SUITABILITY OF RUNWAYS — APPROACH AND LANDING OPERATIONS

(a)CAT II instrument approach operations may be conducted on a precision approach category II or III runway, using a CAT II instrument approach procedure.

(b)CAT III instrument approach operations may be conducted on a precision approach category III runway, using a CAT III instrument approach procedure.

(c)SA CAT I approach operations may be conducted in accordance with the following:

(1)the runway is a precision approach category I runway and an obstacle free zone (OFZ) is established;

(2)a CAT I instrument approach procedure that includes an OCH based on a radio altimeter is used;

(3)where an ILS/MLS is used, it is not promulgated with any restrictions affecting its usability and is not offset from the extended runway centre line;

(4)where a GBAS landing system (GLS) is used, it is not promulgated with any restrictions affecting its usability and should not be offset from the extended centre line;

(5)the glide path angle is 3.0o;

(6)the pre-threshold terrain is surveyed and either a precision approach terrain chart (ICAO Annex 4, Chapter 6) is published in the AIP or the required information is included in the aerodrome terrain and obstacle chart – ICAO (Electronic) (ICAO Annex 4, Chapter 5).

(d)SA CAT II approach operations may only be conducted in accordance with the following:

(1)the runway is a precision approach category I runway and an OFZ is established, and for operations with an RVR of less than 400 m, runway centre line lights are installed;

(2)a CAT II instrument approach procedure is used;

(3)where an ILS/MLS is used, it is not offset from the extended runway centre line and no restrictions affecting its usability are published in the AIP;

(4)where a GLS is used, it is not offset from the extended runway centre line and no restrictions affecting its usability are published in the AIP;

(4)where an ILS is used, it is certified to class II/D/2;

(5)the pre-threshold terrain is surveyed and either a precision approach terrain chart (ICAO Annex 4, Chapter 6) has been published or the required information is included in the aerodrome terrain and obstacle chart – ICAO (Electronic) (ICAO Annex 4, Chapter 5).

(e)The switch-over times of the different lighting elements on runways supporting SA CAT I/II approach operations should be as follows:

(f)The switch-over time for runway edge lights may be increased to 15 sec if runway centre line lights are provided. In this case, the switch-over time for runway centre line lights should be 1 sec.

SUITABILITY OF RUNWAYS FOR EFVS APPROACH AND LANDING OPERATIONS

(a)An EFVS-A operation may be conducted on a runway if:

(1)it is served by a straight-in instrument approach procedure in accordance with Part-FPD of Regulation (EU) 2017/373;

(2)an OFZ is established or a VSS is not penetrated by obstacles, and an instrument departure procedure is established;

(3)the touchdown zone (TDZ) RVR is available;

(4)low-visibility procedures are in effect;

(5)the switch-over time for runway edge, threshold and end lights meets the specifications in CS ADR-DSN.S.880 for CAT II/III runways.

(b)An EFVS-L operation may be conducted on a runway when, in addition to point (a):

(1)an aerodrome obstacle chart – ICAO Type A is published in the AIP; and

(2)a precision approach terrain chart – ICAO is published in the AIP.

GENERAL

(a)When low-visibility procedures (LVPs) are in effect:

(1)persons and vehicles operating on the movement area should be restricted to the essential minimum;

(2)the critical and sensitive areas of ILS/MLS/GLS should be safeguarded.

(b)The aerodrome operator should, in coordination with air traffic services, establish low-visibility taxi routes.

CRITERIA FOR THE PREPARATION OF LVPs When establishing the RVR and cloud ceiling values below which LVPs should be prepared, the aerodrome operator should consider:

(a)the aerodrome layout and its complexity;

(b)the location of the control tower;

(c)the facilities and equipment available; and

(d)the density of traffic.

EQUIPMENT FAILURES TO BE REPORTED AND EFFECTS ON FLIGHT OPERATIONS The following equipment failures should be reported if the system is degraded or unserviceable or if back-up procedures cannot provide the same level of service: