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I believe the transponder code can be changed to a special value to indicate a hijack condition. Perhaps they install a sort of "silent alarm" control to do thi
by jcrawfordor 13y ago
I believe the transponder code can be changed to a special value to indicate a hijack condition. Perhaps they install a sort of "silent alarm" control to do this?
- cjrp 13y ago7500 - hence in light aircraft (with rotary dials to adjust each number) you have to switch the transponder to standby before changing squawk. Prevents briefly sending out a 75/76/7700 as you're rotating through them.