Paragraph 42 General

When any signal specified in the following paragraphs of this rule is displayed it shall be placed in a signals area, which shall be a square visible from all directions bordered by a white strip 30 centimetres wide the internal sides measuring 12 metres.

A white landing T, as illustrated in this paragraph,

Fig. 1

signifies that aeroplanes and gliders taking off or landing shall do so in a direction parallel with the shaft of the T and towards the cross arm, unless otherwise authorised by the appropriate air traffic control unit.

A white disc 60 centimetres in diameter displayed alongside the cross arm of the T and in line with the shaft of the T, as illustrated in this paragraph,

Fig. 2

signifies that the direction of landing and take off do not necessarily coincide.

A white dumb-bell, as illustrated in this paragraph,

Fig. 3

signifies that movements of aeroplanes and gliders on the ground shall be confined to paved, metalled or similar hard surfaces.

A white dumb-bell as described in (4) above but with a black strip 60 centimetres wide across each disc at right angles to the shaft of the dumb-bell, as illustrated in this paragraph,

Fig. 4

signifies that aeroplanes and gliders taking off or landing shall do so on a runway but that movement on the ground is not confined to paved, metalled or similar hard surfaces.

A red and yellow striped arrow, as illustrated in this paragraph,

Fig. 5

the shaft of which is one metre wide placed along the whole or a total of 11 metres of two adjacent sides of the signals area and pointing in a clockwise direction signifies that a right-hand circuit is in force.

A red panel 3 metres square with a yellow strip along one diagonal 50 centimetres wide, as illustrated in this paragraph,

Fig. 6

signifies that the state of the manoeuvring area is poor and pilots must exercise special care when landing.

A red panel 3 metres square with a yellow strip, 50 centimetres wide, along each diagonal, as illustrated in this paragraph,

Fig. 7

signifies that the aerodrome is unsafe for the movement of aircraft and that landing on the aerodrome is prohibited.

A white letter H, as illustrated in this paragraph,

Fig. 8

signifies that helicopters shall take off and land only within the area designated by the marking specified in rule 44(5).

A red letter L displayed on the dumb-bell specified in paragraphs (4) and (5), as illustrated in this paragraph,

Fig. 9

signifies that light aircraft are permitted to take off and land either on a runway or on the area designated by the marking specified in rule 44(6).

A white double cross, as illustrated in this paragraph,

Fig. 10

signifies that glider flying is in progress.