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FIG 6

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Negative (Aircraft)

Negative reply from aircraft:

Negative reply from aircraft:

NEGATIVE (NO)

NEGATIVE (NO)

Fishtail plane

Fishtail plane

FIG 6

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Message received and understood (Aircraft)

Message received and understood by aircraft:

Message received and understood by aircraft:

Day or moonlight - Rocking wings

Day or moonlight - Rocking wings

Night - Green flashed from signal lamp

Night - Green flashed from signal lamp

Emergency Services Available to Pilots

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