GOVERNMENT OF INDIA             CIVIL AVIATION REQUIREMENTS
CIVIL AVIATION DEPARTMENT       SECTION 2 - AIRWORTHINESS
                                SERIES 'X' PART I
                                ISSUE I,DATED 18TH FEBRUARY '1976

File No. 4/451/AI(2)

Subject : Registration Markings of aircraft.

1.   Rule 37 of Aircraft Rules (revised Aircraft Rules  effective 
     1-4-1976) require that all aircraft registered in India must 
     have nationality and registration markings.

     This part of Civil Airworthiness Requirements prescribes the 
     form  and manner in which the nationality  and  registration 
     markings are to be affixed on aircraft.

2.   DEFINITIONS :

     (a)  Nationality  Marks  : Group of  characters  affixed  on 
          aircraft surface to identity the  country to which  the 
          aircraft  belongs.
     
     (b)  Registration Marks : A group  of characters affixed  on 
          aircraft   surface  following  nationality   marks   to 
          identify a particular aircraft.

3.   Nationality and Registration Marks to be used :

     The  nationality  marks to be affixed on  Indian  registered 
     aircraft  would be capital letters "VT" in  Roman  character 
     and  registration marking would consist of a group of  three 
     letters  in  Roman  Character as assigned  by  the  Director 
     General of Civil Aviation.  A hyphen must be placed  between 
     the nationality and registration marks.  The Nationality and 
     Registration marks shall be painted on the aircraft or shall 
     be  affixed  thereto by any other means ensuring  a  similar 
     degree of permanency in the following manner.

4. Location of Nationality and Registration Marks :

4.1 Lighter-than-Air aircraft :

  4.1.1   Airships : The marks on an airship shall appear  either 
          on the hull, or on the stabilizer surfaces.  Where  the 
          marks  appear  on  the  hull,  they  shall  be  located 
          lengthwise  (to be read horizontally) on  each side  of 
          the  hull and also on its upper surface on the line  of 
          symmetry.    Where  marks  appear  on  the   stabilizer  
          surfaces,  they shall appear on the horizontal  and  on 
          the  vertical stabilizers, the marks on the  horizontal 
          stabilizer shall be located on the lower surface,  with 
          the  tops of the letters towards the leading edge;  the 
          marks  on the vertical stabilizer shall be  located  on 
          each  side  of the bottom half  stabilizers,  with  the 
          letters placed horizontally.

  4.1.2   Spherical Balloons (other than unmanned free balloons):

          The  marks  shall appear in  two  places  diametrically 
          opposite.   They  shall  be located  near  the  maximum 
          horizontal circumference of the balloon.

  4.1.3   Non-Spherical   Balloons  (other  than  unmanned   free 
          balloons) :


          The  marks  shall appear on each side.  They  shall  be 
          located  near the maximum cross section of the  balloon 
          immediately above either the rigging band or the points 
          of attachment of the basket suspension cables.

  4.1.4   The side marks on lighter-than-air aircraft (other than 
          unmanned free balloons) shall be visible both from  the 
          sides and from the ground.

  4.1.5   Unmanned free Balloons : The marks shall appear on  the 
          identification plate.

4.2  Heavier-than-Air Aircraft :

 4.2.1    Wings  :  The  marks shall appear  once  on  the  lower 
          surface  of the wing structure.  They shall be  located 
          on  the  left  half of the lower surface  of  the  wing 
          structure  unless they extend across the whole  of  the  
          lower  surface  of  the wing  structure.   As   far  as    
          possible  the marks shall be located  equidistant  from 
          the leading and trailing edges of the wings.  The  tops 
          of the letters shall be towards the leading edge of the 
          wing.  

 4.2.2    Fuselage  (or Equivalent Structure) and  Vertical  Tail 
          Surfaces :

          The  marks  shall  appear either on each  side  of  the 
          fuselage  (or equivalent structure) between  the  wings 
          and  tail  surface,  or on the   upper  halves  of  the 
          vertical  tail  surfaces.   When located  on  a  single 
          vertical tail surface they shall appear on both  sides.  
          When located on multivertical  tail surfaces they shall 
          appear on the outboard sides of the outer surfaces.

 4.2.3    Special Cases :  If an aircraft does not possess  parts 
          corresponding to those mentioned in 4.2.1 and 4.2.2 the 
          marks  shall  be  located at a place  approved  by  the 
          Director General of Civil Aviation.

5.   Measurements of Nationality and Registration Marks :

5.1  The  letters  used  for Nationality and  Registration  marks 
     shall be of equal height.


5.2  Lighter-than-air aircraft :
     
  5.2.1   The  height of the marks on  lighter-than-air  aircraft 
          (other than unmanned free balloons)  shall be at  least 
          50 centimetres.

  5.2.2   The measurements of the marks related to unmanned  free 
          balloons  shall be determined taking into  account  the 
          size  of the Payload to which the identification  plate 
          is  affixed, and shall have prior approval of  Director 
          General of Civil Aviation.

5.3  Heavier-than-air Aircraft :

  5.3.1   Wings :  The height of the marks on the wings shall  be 
          at least  50 centimetres.

  5.3.2   Fuselage  (or  equivalent structure) and vertical  tail 
          surfaces :


          The height of the marks on the fuselage (or  equivalent 
          structure)  and on the vertical tail surfaces shall  be 
          at least 30 centimetres.

  5.3.3   Special case : If a heavier-than-air aircraft does  not 
          possess parts corresponding to those mentioned in 5.3.1 
          and  5.3.2  the measurements of the  marks  shall  have 
          prior  approval  of  the  Director  General  of   Civil 
          Aviation.

6.   Types   of   Characters  for  Nationality  and  Registration 
     Marks:

6.1  The  letters  shall be capital letters in  Roman  characters 
     without any ornamentation.

6.2  The  width  of  each letter (except the letter  I)  and  the 
     length  of  hyphens shall be two-thirds of the height  of  a 
     letter.  W = 2/3H.

6.3  The  letters and hyphens shall be formed by solid lines  and 
     shall   be  of  a  colour  contrasting  clearly   with   the 
     background.   The   thickness  of  the    lines   shall   be  
     one-sixth  of  the  height  of  a letter.    T = 1/6H.

6.4  Each   letter  shall  be  separated  from  that   which   it 
     immediately precedes or follows, by a space of not less than 
     one  quarter  of  a  letter's width.    A  hyphen  shall  be 
     regarded  as  a  letter  for this purpose.  D  =  1/4  W,  = 
     1/4x2/3H, = 1/6 H.

6.5  The letters shall always be kept in good condition, so  that 
     they are read clearly and easily.

7.   Identification Plate :

     An  aircraft shall carry an identification  plate  inscribed 
     with  Nationality  and Registration mark together  with  the 
     name and address of the  registered owner.  The plate  shall 
     be made of fire-proof metal/material and shall be secured in 
     a prominent place  on the aircraft and kept clean.  In  case 
     of  an  unmanned  free balloon,   plate  shall  be   affixed 
     conspicuously to the exterior of the payload.

8.   General :

     The provision of this CAR shall not apply to  meteorological 
     pilot balloons used exclusively for meteorological  purposes 
     or to unmanned free balloons without a payload.


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