AWO.A.EFVS.101 CS AWO.A.EFVS.101 General

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

IRImplementing rule

AWO.A.EFVS.101CS AWO.A.EFVS.101 General

- (a) An enhanced flight vision system (EFVS) uses an electronic means to provide a real-time display of the forward external scene topography through the use of imaging sensors. - (b) The EFVS shall provide a demonstrated vision performance in low-visibility conditions and a level of safety suitable for the proposed operational procedure that will allow the required visual references to become visible in the image before they are visible naturally out-the-window. - (c) The EFVS shall provide an enhanced vision image that can be used during an instrument approach to enhance the pilot's ability to detect and identify the required visual references for landing in order to gain an operational credit and descend below the decision altitude (DA) / decision height (DH) or minimum descent altitude (MDA). - (d) The EFVS sensor imagery and required aircraft flight information and flight symbology shall be displayed on a HUD (or equivalent display) so that the imagery and symbology are clearly visible to the pilot flying in their normal position with the line of vision looking forward along the flight path. The HUD or equivalent display that is used to display the EFVS sensor imagery, aircraft flight information and flight symbology shall comply with the requirements of Subpart A Section 2. - (e) The EFVS shall include the display element, sensors, computers and power supplies, indications, and controls. It may receive inputs from an airborne navigation system or flight guidance system. The EFVS display characteristics and dynamics shall be suitable for the manual control of the aircraft. - (f) A database may be used to support the provision of a synthetic runway (or equivalent). For these databases, a consistent set of data quality requirements (DQRs) shall be established to support the intended function of the equipment. Any requirements for the databases must be described to enable operators to conduct checks before using the database. The means of processing and maintaining the database shall be defined.

[Issue: CS-AWO/2]

IR · AWO.A.EFVS.101 — CS-AWO · ED Decision 2022/007/R · CS-AWO Easy Access Rules · EAR revision 14 Aug 2026

AMCAcceptable means of compliance

AMC AWO.A.EFVS.101 General

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The functions the enhanced flight vision system (EFVS) is intended to perform should be defined. This definition should include what features will be displayed and the criticality of pilot decision-making when using the display features. The additional intended functions (for example, terrain alerting) should be defined according to AMC 25-11 as well as CS 23.2500 and CS 25.1301.

This should include the use of the EFVS to visually acquire the visual references required to operate below the DA/H or the MDA and the criticality of pilot decision-making based on what is visible when using the EFVS display. The purpose of the EFVS is to provide a visual advantage over the pilot's out-the-window view using natural vision. In lowvisibility conditions, the 'enhanced flight visibility' should exceed the 'flight visibility', and the required visual references should become visible to the pilot at a longer distance with an EFVS than they would be out-the-window using natural vision. The visual advantage of using an EFVS should be demonstrated before descending below the DA/H or the

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

MDA because this is the point in an instrument approach procedure where the operating rules permit an EFVS to be used in lieu of natural vision for operational benefits.

- Note 1: The EFVS is not intended to replace the technologies or procedures already used to safely fly the aircraft down to the MDA/H or the DA/H.

- Note 2: While the goal of the EFVS is to exceed the natural flight visibility in the majority of cases / weather conditions, there may be meteorological conditions where the EFVS does not provide a significant advantage.

- Note 3: The HUD (or equivalent display) is separately certified and should remain subject to all applicable rules and guidance for a given category of aircraft and operation.

Databases that are used to support the provision of a synthetic runway (or equivalent) that are provided by a Type 2 DAT provider certified in accordance with Regulation (EU) 2017/373 1 or equivalent, and that are compliant with the data quality requirements (DQRs) are considered to be an acceptable means of compliance to CS AWO.A.EFVS.101(f).

Note: For databases, the applicant should identify the DQRs during the airworthiness approval and demonstrate that they are consistent with the intended function of the equipment.

[Issue: CS-AWO/2]

AMC — CS-AWO · ED Decision 2022/007/R · CS-AWO Easy Access Rules · EAR revision 14 Aug 2026

All rules in SUBPART A -ENABLING EQUIPMENT SECTION 1 -AUTOMATIC LANDING SYSTEMS (ALSS)

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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