AIR PX /FOUL WX Flashcards
Caution: Excessive compressor discharge px may cause EDC damage. If the difference between inlet and discharge PX reaches approximately ______ Hg, the max compressor discharge should be computed.
35 inches
Prop DEICE sys operation period of one complete cycle is
160 seconds (8x20 second intervals)
Windshield heat required warm up period prior to selecting high pwr is:
10 minutes
AC pwr’d EMP DEICE timer motor cycles consist of
8 seconds per strip (20 strips total)
16 second dead band
One complete cycle 176 seconds
LE HOT light illuminates when LE inner skin reaches
110 C
What is Fire Bottle (HRD) Halon charge?
600 PSI
LE HOT light illuminates when?
110 C
Isobaric Range for pressurization is?
0-13.3 in Hg
Differential Range for pressurization is?
13.3 - 13.9 in Hg
Safety Range for pressurization is?
13.9 - 14.4 in Hg
CABIN PRESS illuminates/extinguishes when?
10,000’ +/- 500’ cabin altitude / 8000’ cabin altitude
O2 with diluter active gives approximately how much time on O2?
2 hours
O2 at 100% gives approximately how much time of O2?
45mins to 1 hour.
O2 sys Px at 70 C is?
1500 psi Min.
A, B, C, Valves functions?
Remember catch a CAB
C - hot air bypass vlv is “cookin”
A - Turbine bypass vlv is “ahhhh”
B - Turbine Shutoff vlv is “brrrrr”
When Eng Anti-Ice is turned on what happens?
9% drop in SHP
5% increase in FF to compensate for loss of Bleed Air
500 lbs/hr if using wing & engine anti ice
What is the Ice control times for prop deice?
160 sec (8-20 seconds cycles)
What is EMP deice control times?
176 sec with 44 sec test
What is Wing Deice times?
20-30 sec with 10C rise
What components make up the EMP Foul WX system?
P3C T/O
Parting Strips (Bus A)
Cycling Strip PWR relay (Bus B)
Control Relay ( )
Control Power CB (EXT Main DC)
Timer Motor (MEAC)
Overheat temp Condition
When to use High windshield heat?
FLIB
Fog on Window
Low doesn’t work
Ice is anticipated and OAT s 0 to - 25C
Below 10,000’ with high bird activity
