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The
primary role of D&D is to provide assistance to aircraft in emergency and, where possible,
a position fixing service.
2.7 The use of D&D to provide 121.500 MHz across UK airspace, including certain
international aerodromes, enables the most efficient and coherent response to emergency
calls. 121.500 MHz is also provided at international airports where D&D is unable to
monitor to circuit altitude, and at military aerodromes, by their associated ATS units.
2.8 D&D can provide an instantaneous auto-triangulation fixing service to aircraft transmitting
on 121.500 MHz in the London and Scottish FIRs, generally at the following levels:
• Within the London FIR at and above 3000ft amsl over land east of Wales and
south of Manchester, reducing to 2000ft amsl within 40nm of Heathrow,
• Within the Scottish FIR at and above 8500ft amsl generally, reducing to between
2000 and 5000ft over the sea and lowland areas, and
• Unreliable service outside of these areas.
Last updated: 28 September 2023
Tom Denton concluded by advising the Group that Gatwick had invited the CAA to
conduct an aircraft arrivals procedure assessment as had recently been conducted at
Heathrow.
5.
Last updated: 19 November 2021
The Chair informed the Board of her recent meetings, which included a meeting with
the Board of Highlands and Islands Airports in Inverness and an introductory meeting
with the new Chair of Gatwick Airport on important topics including, long-term
punctuality and engagement with the community.
5.
Last updated: 18 June 2021
There was an issue at Heathrow where
there were a number of specific aircraft types which experienced radio altimeter failures.
Last updated: 03 September 2024
The IAA seeks to improve its
operational and environmental efficiency by radically changing their airspace
structure around Dublin airport, including new departure routes and
implementation of a new method of managing arrival streams called Point-
Merge.
Last updated: 16 November 2021
Background
In 2014 TAG Farnborough Airport consulted on proposed changes to the air 1.2
traffic routes to and from the airport.
Last updated: 21 December 2015
With regard to Understanding the needs of users, the CAA references both Constructive
Engagement with airlines and airports and consumer research as means to understand those
directly using and affected by NERL’s services.
Last updated: 24 February 2026
Andy Taylor
mentioned that the issue of de-conflicting traffic from the Heathrow BIGGIN hold
remains.
Last updated: 19 November 2021
Airport-based Operators 26 9 35
2.
Last updated: 24 November 2021
OFFICIAL - Public
AIRSPACE CO-ORDINATION NOTICE
Safety and Airspace Regulation Group
ACN Reference: Version: Date: Date of Original
AR-2026- 1.0 29/07/2026 29/07/2026
AERIAL SURVEY FARNBOROUGH
BIOFLIGHT
CAT Z
Subject to NOTAM: No
Date(s) of activity/Validity: Times
30 Jul 26 – 31 Dec 26 Day Capture – within 20 degrees sun-angle - No clouds
below listed altitude
Vertical Limits: Allocated Mode 3A (SSR):
2000ft – 2300ft AMSL Tactically Issued by ATC
Aircraft Details: NDS Approved:
Type: P68C, P68 Observer
Callsign: BIOxx No
Event Sponsor(s): Aircraft Operator(s):
APEM Limited
Unit 3 and 4a
Aviation Business Centre
Aviation Park
Flint Road
Saltney Ferry
Chester
CH4 0GZ
Tel: (01244) 520 460
ops@apemltd.co.uk
Bioflight
ROSKILDE AIRPORT
HANGARVEJ E12
4000 ROSKILDE
DENMARK
+45 26 82 72 82
old@bioflight.dk
ATS Units/
Controlling Agencies: Geographical Limits:
Odiham 01993 895907
Farnborough 01252 526017
Last updated: 29 July 2026
