---
title: "GM1 HPT-DSN.B.100 Final approach and take-off areas (FATOs) — Certification Specifications and Guidance Material for Heliport Design (CS-HPT-DSN) — Issue 1, Aerodromes · Avioverse"
description: "General: A FATO may not be necessary to be provided at and aerodrome, where the runway is used for the purposes of final approach and take-off of…"
url: "https://avioverse.aero/regulations/easa/aerodromes/cs-hpt-dsn/chapter-b-helicopter-operating-areas/gm1-hpt-dsn-b-100"
---

# GM1 HPT-DSN.B.100 Final approach and take-off areas (FATOs)

Certification Specifications and Guidance Material for Heliport Design (CS-HPT-DSN) — Issue 1 · Regulation (EU) No 139/2014 · EAR revision 13 Mar 2026

GM Guidance material

## GM1 HPT-DSN.B.100 Final approach and take-off areas (FATOs)

(a) General:

(1) A FATO may not be necessary to be provided at and [aerodrome](https://avioverse.aero/glossary/easa/aerodrome), where the [runway](https://avioverse.aero/glossary/easa/runway) is used for the purposes of final approach and take-off of helicopters.

(2) Where a FATO is located near a runway or [taxiway](https://avioverse.aero/glossary/easa/taxiway), and when simultaneous helicopter and [aeroplane](https://avioverse.aero/glossary/easa/aeroplane) operations are planned, the separation distance between the edge of a runway or taxiway and the edge of a FATO should not be less than the appropriate dimension in Table GM1-B-1.

(3) Operational limitations should be considered under certain wind conditions.

| If aeroplane mass and/or helicopter mass are                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Distance between FATO edge and runway edge or taxiway edge |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------- |
| up to but not including 3 175 kg                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | 60 m                                                       |
| 3 175 kg up to but not including 5 760 kg                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 120 m                                                      |
| 5 760 kg up to but not including 100 000 kg                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 180 m                                                      |
| 100 000 kg and over                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | 250 m                                                      |
| Note: The values specified in this table are primarily intended to mitigate risks of wake turbulence encounters. In addition to this table, when positioning a FATO intended to be used simultaneously with a nearby runway or taxiway, attention should be given to other CS ADR-DSN requirements such as the minimum [runway strip](https://avioverse.aero/glossary/easa/runway-strip) width. Local environment should be taken into account when setting the separation between the FATO and nearby infrastructure elements to ensure the safety of simultaneous operations. |                                                            |

Table GM1-B-1. FATO minimum separation distance

(b) A FATO should not be located:

(i) near taxiway intersections or holding points where jet engine efflux is likely to cause high turbulence; or

(ii) near areas where aeroplane vortex wake generation is likely to occur.

GM · GM1 HPT-DSN.B.100 — Regulation (EU) No 139/2014 · ED Decision 2019/012/R · Aerodromes Easy Access Rules · EAR revision 13 Mar 2026

[All rules in CHAPTER B — HELICOPTER OPERATING AREAS](https://avioverse.aero/regulations/easa/aerodromes/cs-hpt-dsn/chapter-b-helicopter-operating-areas)

Consolidated from the EASA Easy Access Rules (revision 13 Mar 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.