---
title: "AWO.B.CATIII.128 CS AWO.B.CATIII.128 Documentation required — CS-AWO · Avioverse"
description: "Documentation providing the following information is required for certification:"
url: "https://avioverse.aero/regulations/easa/cs-awo/subpart-b-section-4/awo-b-catiii-128"
---

# AWO.B.CATIII.128 CS AWO.B.CATIII.128 Documentation required

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

IR Implementing rule

## AWO.B.CATIII.128 CS AWO.B.CATIII.128 Documentation required

Documentation providing the following information is required for certification:

\- (a) A specification of the aeroplane and the airborne equipment.

\- (b) Evidence that the equipment and its installation comply with the applicable standards.

\- (c) A failure analysis and an assessment of system safety (see AMC 25.1309).

\- (d) A performance analysis demonstrating compliance with the performance criteria of CS AWO.B.CATIII.115, CS AWO.B.CATIII.116 and CS AWO.B.CATIII.117 (see CS AWO.A.ALS.106(b)).

\- (e) Flight test results including validation of any simulation.

\- (f) Limitations on the use of the system and crew procedures to be incorporated in the AFM;

\- (g) Evidence that the crew workload complies with CS 25.1523.

\- (h) Inspection and maintenance procedures shown to be necessary by the system safety assessment (see CS 25.1529).

\[Issue: CS-AWO/2]

ED Decision 2022/007/R

SECTION 5 -AIRWORTHINESS CERTIFICATION OF AEROPLANES FOR OPERATIONAL CREDITS FOR VISUAL SEGMENT IN REDUCED RUNWAY VISUAL RANGE (RRVR)

IR · AWO.B.CATIII.128 — 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.