Aspen Avionics Evolution EFD1000 PFD - 6.2. Pitot;Static System Blockage

EFD1000 PFD Pilot’s Guide
CHAPTER 6, EMERGENCY AND ABNORMAL PROCEDURES
EFD1000 PFD Pilot’s Guide
EFD1000 PFD Pilot’s Guide Page 6-3A-01-184-00 REV B
6.2. Pitot/Static System Blockage
A static line blockage will result in altitude remaining xed and a zero vertical speed
despite aircraft pitch and/or power setting changes. In addition, IAS indications will
be incorrect if the static line is blocked. Errors will typically be noticed in the climb or
descent phase of ight. When descending, ambient pressure increases, which will result
in the indicated airspeed reading less than the actual airspeed. The opposite eect will
be observed in a climb.
A pitot line blockage will result in the airspeed indicator behaving like an altimeter
when the aircraft altitude changes, and it does not respond to airspeed changes.
When Pitot or Static Line is Blocked
1. Select an alternate static source.
2. Set Pitot Heat to ON.
CAUTION
Most light aircraft have only a single pitot and static port
available for ight instrument use. As such, the pitot and static
lines used by the EFD1000 system are shared with those lines used
by the standby airspeed indicator and altimeter. Should these
lines become blocked, such as might occur due to inadvertent
icing encounter, both the standby indicators and the EFD1000
indicators will display erroneous airspeed and/or altitude
information.
In the event of erroneous airspeed and altitude information at
the EFD1000, the EFD1000 Attitude Monitor will present a “CROSS
CHECK ATTITUDE” annunciation.