AMC4 SPA.LVO.105(c) Specific approval criteria

CAA ORS9 Decision No. 47

Text in magenta in force from 30 October 2025

OPERATING PROCEDURES — CAT III

For CAT III operations, the following should apply:

1. The flight crew should consist of at least two pilots.

2. The approach should be flown using a certified system as identified in the AFM.

3. All height call-outs below 200 ft above the runway threshold elevation should be determined by the use of a radio altimeter or other device capable of providing equivalent performance.

4. For operations in which a DH is used, the DH should be determined by the use of a radio altimeter or other device capable of providing equivalent performance, if so determined by the aircraft certification process.

5. At DH, the following visual references should be distinctly visible and identifiable to the pilot:

   1. for operations conducted either with fail-passive flight control systems or with the use of an approved HUD or equivalent display system: a segment of at least three consecutive lights, which are the centre line of the approach lights, or TDZ lights, or runway centre line lights, or runway edge lights, or a combination of these; and

   2. for operations conducted either with fail-operational flight control systems or with a fail-operational hybrid landing system using a DH: at least one centre line light to be attained and maintained by the pilot.

6. For operations with no DH, there is no specification for visual reference with the runway prior to touchdown.