I saw this video that shows an A-10 mission in Afghanistan. At 4:31 and 6:08 the callout "Altitude, altitude" is audible.
I would like to know which flight conditions are required to trigger the callout.
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1$\begingroup$ Welcome to aviation.SE! $\endgroup$– PondlifeDec 14, 2019 at 19:07
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4$\begingroup$ You would need a manual that describes the particular Ground Proximity Warning System parameters for the A-10. It'll be something on the lines of radar altitude below a threshold value, with a descent rate above a threshold, and terrain closure rate (due to sloping ground) above a threshold. $\endgroup$– John KDec 14, 2019 at 19:24
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