Directorate General of Civil Aviation the regulatory body of
civil aviation in Turkey, has promulgated a new Directive on
aircraft nationality and registration marks on 12 September 2014
aiming to meet the requirements of Annex-7 of ICAO that will be
applied to all existing registered or future registered aircrafts
on DGCA registry.
Accordingly, the aircrafts are classified in two tables as
defined in appendices to the directive that are particular for
general aircrafts and very light aircrafts. In general
classification the aircrafts are sub-classified as lighter than air
aircrafts and heavier than air aircrafts complying to the Annex-7
and very light aircrafts are sub classified as motorized and
Pursuant to the article 6 of the Directive Registration marks
are given to the classified aircrafts starting with registration
nationality and (-) sign followed by three letters in the Turkish
alphabet and reserved for one year period for the relevant
The registration mark consists of combination of letters for
Turkish civil aircrafts. The registration marks should be selected
among triple-letters combinations after national mark by class of
following aircrafts, "U" for ultra light/micro light,
"B" for balloons, "H" for, "Z" for
agricultural purposes aircrafts and "P" for gliders. The
letters other than those allocated for such aircrafts are used for
general aircraft classification.
The registration marks starting with "I" is used for
unmanned aerial vehicles and continues with sequential numbers. A
separate registry is kept for unmanned aerial vehicles.
The five-letter combinations used in Part II of the
International Code of Signals and three-letter combinations used in
"Q" codes starting with "Q" and the signs that
may cause confusion with emergency signs such of "XXX",
"PAN", "TTT", "SOS", "ILF"
are not allowed to be used as registration marks. For general
aircrafts the nationality and registration marks must be painted on
the aircraft or affixed permanently and kept visible and clear.
Registration marks should be placed to the points of the listed
For airships: Registration marks should be placed to the
airframe or in the flight control area. If placed on the airframe,
it should be longitudinal along the airframe and on the upper
surface of the axis of symmetry. Signs should be placed on
horizontal and vertical stabilizers.
For spherical balloons: Registration marks should be placed
complying to the SHT-Balloon Directive excluding unmanned free
For non-spherical balloons: Registration marks should be placed
on both sides over the equipment bands or basket connecting cable
close to the maximum horizontal cross-section excluding unmanned
For lighter than air aircraft: Edge markings must be visible
from both sides as well as from the ground excluding for unmanned
For unmanned aircrafts: Marks should be placed where the
aircrafts can easily be seen and identified.
The registration marks of heavier than air aircrafts should be
placed as described below:
Wings: The marks must be primarily on the lower surface of the
wing structure at heavier than air aircraft. Providing that it is
not placed longitudinal along the entire lower surface of the wing
it can be in the lower part of the left half and must be at an
equal distance to the front and back edges as possible as it is.
Top of the letters should be towards to the leading edge of the
Airframe or equivalent airframe structures and horizontal tail
surfaces: The marks should be placed on each side of the airframe,
between wings and tail surface or on upper half of the vertical
tail surfaces. In cases where it is placed on only one vertical
tail surface it should be on both sides facing outwards of vertical
The new Directive requires all numbers and letters of the
registration marks to be equal at the same level. The letters must
be in Roman type, unadorned and upper case. The image of the
Turkish flag complying with the standards for aircrafts should be
placed on airframes. Directive also requires each aircraft to also
carry a plate having at least the Turkish nationality and
registration marks. All aircrafts given registration mark prior to
the publication date of the Directive should meet all requirements
of the Directive within maximum 6 months of the effectiveness of
The content of this article is intended to provide a general
guide to the subject matter. Specialist advice should be sought
about your specific circumstances.
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