GE ADTS552F, User Manual

Page: 87 / 153

M
ANUAL
V
ENTING OF THE
A
IRCRAFT
P
ITOT AND
S
TATIC
S
YSTEMS
[EN] English 77 K0553 Revision D
The order the manual let-down valves are opened is:
Figure 3-27: Manual let-down ADTS542F and ADTS552F
Figure 3-28: Manual let-down ADTS553
Number of
Channels Application 1st Valve open 2nd Valve open 3rd Valve open 4th Valve open
2 Pitot & Static Pt to Ps (A) Ps to Atm (B) N/A N/A
Number of
Channels Application 1st Valve open 2nd Valve open 3rd Valve open 4th Valve open
3 Smart Probe
Angle of Attack Ps2 to Ps1 (A) Pt1 to Ps1 (B) Ps1 to Atm (C) N/A