All instruments
Pitot-static system
Block the pitot tube or the static port and see which instrument starts to read wrong.
Airspeed
95 kt
actual 95
Altimeter
3,000 ft
actual 3,000
Vertical speed
0 ft/min
actual 0
- Pitot pressure
- Static pressure
- Trapped pressure
- Blockage
Time runs 6 times faster, so a climb shows on the instruments quickly.
All clear. Your instruments show what the aircraft is really doing: the needles and the actual values move together.
- Pitot pressure goes to
- the airspeed indicator only
- Static pressure goes to
- airspeed indicator, altimeter and vertical speed indicator