Number of
Channels
Application
3
Smart Probe
Angle of
Attack
Figure 3-28: Manual let-down ADTS553
1st Valve
open
Ps2 to Ps1 (A)
Pt1 to Ps1 (B)
M
V
ANUAL
ENTING OF THE
2nd Valve
3rd Valve
open
open
Ps1 to Atm
(C)
A
P
S
S
IRCRAFT
ITOT AND
TATIC
YSTEMS
4th Valve
open
N/A
102