3 Answers
Pitot blockage but drain hole NOT blocked
Asked by: James A Harris 13756 views Aircraft Systems
If the pitot tube inlet becomes blocked but the drain holes remain open (if this is possible) won't this essentially cause the AS indicator to read close to zero if the pressure in the chamber is equalized through the drains? Are there one way valves involved? It seems that the answer I see everywhere is that when the pitot inlet is blocked the system will act like an altimeter. Is that always the case? Thanks and need to know before my instrument practical this weekend.