AIM

10/12/17

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11

National Security and Interception Procedures

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15. Interception Signals

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1 and TBL 5

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2.

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1

Intercepting Signals

INTERCEPTING SIGNALS

Signals initiated by intercepting aircraft and responses by intercepted aircraft

(as set forth in ICAO Annex 2-Appendix 1, 2.1)

Series

INTERCEPTING Aircraft Signals

Meaning

INTERCEPTED Aircraft Responds

Meaning

1

DAY

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Rocking wings from a position

slightly above and ahead of, and normally
to the left of, the intercepted aircraft and,
after acknowledgement, a slow level turn,
normally to the left, on to the desired
heading.

NIGHT-Same and, in addition, flashing
navigational lights at irregular intervals.

NOTE 1

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Meteorological conditions or

terrain may require the intercepting
aircraft to take up a position slightly above
and ahead of, and to the right of, the
intercepted aircraft and to make the
subsequent turn to the right.

NOTE 2

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If the intercepted aircraft is not

able to keep pace with the intercepting
aircraft, the latter is expected to fly a series
of race

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track patterns and to rock its wings

each time it passes the intercepted aircraft.

You have
been
intercepted.
Follow me.

AEROPLANES:
DAY

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Rocking wings and following.

NIGHT

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Same and, in addition, flashing

navigational lights at irregular intervals.

HELICOPTERS:
DAY or NIGHT

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Rocking aircraft, flashing

navigational lights at irregular intervals and
following.

Understood,
will comply.

2

DAY or NIGHT

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An abrupt break

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away

maneuver from the intercepted aircraft
consisting of a climbing turn of 90 degrees
or more without crossing the line of flight
of the intercepted aircraft.

You may
proceed.

AEROPLANES:
DAY or NIGHT-Rocking wings.

HELICOPTERS:
DAY or NIGHT

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Rocking aircraft.

Understood,
will comply.

3

DAY

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Circling  aerodrome, lowering land-

ing gear and overflying runway in direction
of landing or, if the intercepted aircraft is a
helicopter, overflying the helicopter land-
ing area.

NIGHT

−

Same and, in addition, showing

steady landing lights.

Land at this
aerodrome.

AEROPLANES:
DAY

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Lowering landing gear, following

the intercepting aircraft and, if after
overflying the runway landing is consid-
ered safe, proceeding to land.

NIGHT

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Same and, in addition, showing

steady landing lights (if carried).

HELICOPTERS:
DAY or NIGHT-Following the intercepting
aircraft and proceeding to land, showing a
steady landing light (if carried).

Understood,
will comply.