User manual
Bronco X
Aerosoft GmbH 2012
40 41
• 4400 to 4477: Reserved for use by SR-71, YF-12, U-2 and
B-57, pressure suit flights, and aircraft operations above FL600
(USA only).
• 5000: Aircraft in Military Operations.
• 6000: Australia: Military flights in Class G airspace.
• 7000: VFR standard squawk code when no other code has
been assigned (ICAO). UK: this code does not imply VFR; 7000
is used as a general squawk.
• 7001: Sudden military climb out from low-level operations (UK)
• 7004: Aerobatic and display code in some countries.
• 7010: VFR circuit traffic code in the UK.
• 707X: Paradrop activities in France (7070, 7071, 7072...).
• 7615: Australia: civil flights engaged in littoral surveillance.
• 7777: Military interception Emergency codes:
• 7500: Unlawful Interference i.e., Aircraft hijacking (“seven fife,
man with knife”)
• 7600: Lost Communications.
• 7700: General Emergency (“seven, seven, goes to heaven”)
Tacan Receiver
TACAN is a VOR like navigation
system that uses transmitters
that are mainly placed on or
close to military airfields. Where
you tune a VOR using a
frequency, a TACAN is identi-
fied by a channel.