AWO.B.CATIII.124 CS AWO.B.CATIII.124 Head-up display (or other form of guidance display) fail-operational hybrid landing system

All Weather Operations (CS-AWO) · CS-AWO · EAR revision 14 Aug 2026

IRImplementing rule

AWO.B.CATIII.124CS AWO.B.CATIII.124 Head-up display (or other form of guidance display) fail-operational hybrid landing system

(See AMC1 AWO.B.CATIII.121 and AMC2 AWO.B.CATIII.121)

Where a HUDLS is fitted for use in the event of automatic landing system failure, the combination of the two systems shall comply with CS AWO.A.ALS.111 and CS AWO.A.ALS.112. In addition, the failure modes of the display shall not lead a pilot to disengage a satisfactorily functioning autopilot and obey the malfunctioning display.

[Issue: CS-AWO/2]

IR · AWO.B.CATIII.124 — CS-AWO · ED Decision 2022/007/R · CS-AWO Easy Access Rules · EAR revision 14 Aug 2026

All rules in SUBPART B -APPROACH AND LANDING SECTION 4 -AIRWORTHINESS CERTIFICATION OF AEROPLANES FOR OPERATIONS WITH DECISION HEIGHTS (DHs) BELOW 30 M (100 FT) OR NO DECISION HEIGHT (DH) -CATEGORY III (CAT III) OPERATIONS

Consolidated from the EASA Easy Access Rules (revision 14 Aug 2026, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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