Symptoms of the approaching stall
Kerling-Approsh KG:
A technique that was used in cloud seeding operations in Australia, many moons ago, to find out how close you were to the approaching stall was to initiate a 5 degree level turn and if buffet occured, it was time to descend to the lowest safe altitude for deicing purposes and when done, then climb back to the minus 5 degree centigrade level and continue seeding.
The buffet was an excellent indication that the wing was close to the stall.
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