---
title: "AWO.B.CATIII.117 CS AWO.B.CATIII.117 Automatic ground-roll control — CS-AWO · Avioverse"
description: "(See AMC AWO.B.CATIII.115) - (a) When automatic ground-roll control or head-up ground-roll guidance is being used, the probability that the point on the…"
url: "https://avioverse.aero/regulations/easa/cs-awo/subpart-b-section-4/awo-b-catiii-117"
---

# AWO.B.CATIII.117 CS AWO.B.CATIII.117 Automatic ground-roll control

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

IR Implementing rule

## AWO.B.CATIII.117 CS AWO.B.CATIII.117 Automatic ground-roll control

(See AMC AWO.B.CATIII.115)

\- (a) When automatic ground-roll control or head-up ground-roll guidance is being used, the probability that the point on the aeroplane centre line between the main wheels will deviate more than 8.2 m (27 ft) from the runway centre line on any one landing shall be less than 5 %.

\- (b) Additionally, when the operation is predicated on the provision of fail-operational ground-roll control, the probability that the outboard landing gear will deviate to a point more than 21 m (70 ft) from the runway centre line while the speed is greater than 74 km/h (40 kt) shall be less than 10 -6 .

\[Issue: CS-AWO/2]

IR · AWO.B.CATIII.117 — CS-AWO · 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](https://avioverse.aero/regulations/easa/cs-awo/subpart-b-section-4)

Consolidated from the EASA Easy Access Rules (revision 14 Aug 2026, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.