AWO.B.CATII.101 CS AWO.B.CATII.101 Applicability

This section is applicable to aeroplanes for which certification is sought to allow the performance of approaches with DHs below 60 m (200 ft) down to 30 m (100 ft) -Category II operations, using a precision approach system as defined in ICAO Annex 10 (See AMC AWO.B.CATII.101(a)).

[Issue: CS-AWO/2]

AMC AWO.B.CATII.101(a) Applicability and terminology

ED Decision 2022/007/R

An xLS (as defined in CS AWO.B.CATI.102) which has outputs that indicate the magnitude and sense of deviation from a preset azimuth and elevation angle giving operational characteristics equivalent to those of a conventional ILS is considered a precision approach system.

An aeroplane with a basic airworthiness approval for IFR operations is eligible to perform xLS precision approaches down to a DH of 60 m (200 ft), assuming that the necessary xLS receiver(s) and instruments and their installation have been approved. The purpose of Subpart B Section 3 is to specify the supplementary airworthiness requirements for the performance of xLS approaches with DHs below 60 m (200 ft) down to 30 m (100 ft). Depending upon the applicable operational regulations, aeroplanes that are certified in accordance with this Section may also be eligible to conduct SA CAT II operations.

Terminology

- (a) The term 'approach system' used here refers only to the airborne system. It includes the equipment listed in CS AWO.B.CATII.111, and all related sensors, instruments and power supplies. - (b) 'Decision height (DH)' is the wheel h eight above the runway elevation by which a go-around must be initiated unless adequate visual reference has been established and the aircraft position and approach path have been visually assessed as satisfactory to continue the approach and landing safel y. Where 'DH' is used in Section 3, it means the minimum DH for which compliance with the requirements of Section 3 has been demonstrated. - (c) A 'go -around' is the transition from an approach to a stabilised climb. - (d) 'Failure condition' and the terms des cribing the probabilities and effects of failure conditions are defined in AMC 25.1309.

Easy Access Rules for All-Weather Operations (CS-AWO)

SUBPART B -APPROACH AND LANDING SECTION 3 -AIRWORTHINESS CERTIFICATION OF AEROPLANES FOR OPERATIONS WITH DECISION HEIGHTS (DHs) BELOW 60 M (200 FT) AND DOWN TO 30 M (100 FT) -CATEGORY II (CAT II) OPERATIONS

The term ' localiser ' and ' glide path ' have been retained for use with either ILS, MLS or GLS.

Cross reference is made in this Section to AMC AWO.A.ALS.110 which provides guidance on controls, indicators and alerts associated with installations incorporating more than one type of approach system (e.g. ILS and MLS and/or GLS).

[Issue: CS-AWO/2]