Thread: Airspeed Low
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Old 09-20-2021, 07:03 PM
BobTurner BobTurner is offline
Join Date: Dec 2011
Location: Livermore, CA
Posts: 7,858

Easier to do the following test. Disconnect (or plug) the static vents. Open the static line somewhere inside the cabin. Go fly. Problem fixed? (Try with air vents open, and closed.) Cabin pressure is usually different than true static, but not enough to decrease airspeed 15 knots.
An easier, alternative test is to set your altimeter to field elevation, then carefully do a high speed low pass 50 over the runway. Does the altimeter read field elevation plus 50? If so your static system is okay.
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