anti ice Flashcards
function of the Air Foil Tail anti ice system
the tail anti-ice system provides anti ice of horizontal stab
with TAIL AIR FOIL ON engine bleed air flows through ducts to the horizontal stab leading edge
Wing anti ice system Wing Ice detection system test when is it inhibited
anti ice of wing slats,
RESET resets system and removes WING ICE DETECTED alert from EAD. The system will not reset if ice remains on sensors
TEST tests the wing ice detection system WING ICE DET PASS displayed
on the ground
when ice is detected on either or both upper wing surfaces the alert WING ICE DETECTED is displayed
system is inhibited during takeoff, landing and inflight.
the function of the AIR DATA HEAT switch
Push button amber
OFF illuminates when all air data system heaters are off 6
Dark when all heater circuits for pitot,rudder limiter, AOA , stall probes ,static ports and RAT probes are energized
on ground heat to RAT probe is inhibited
the operation of the Anti Ice switch
ON and Off nose cowl
if only one switch on the ENG(L/R-A-ICE ON) alert is displayed
relationship between pneumatic isolation valve and use of wing or tail anti ice
In flight opens if only one system is supplying bleed air
Normal ops does not need to be open
what windshields are electrically anti-iced and anti fogged
three pilot windshields anti-iced and anti-fogged
clear view and overhead anti fogged
2 switches WINDSHIELD ANTI-ICE AND ANTI-FOG seperately control the system
The function of the Pneumatic Overheat Detection System (PODS)
dual tail ,single manifolds tail,wing,pods e/e, alerts,tested
dual loop sensors in the tail compartment and single loop in the wing and tail anti-ice manifolds
PODS is located E/E compartment
If failure in PODS detected in the ant-ice manifold it automatically closes anti-ice valve at the WING ANTI-ICE OFF/TAIL A-ICE OFF Alert displays
If PODS fails to shutoff the affected manifold the WING MANF FAIL?TAIL MANF FAIL alert dip lays
PODS is automatically tested when the engine fire protection system is tested
When is engine anti ice required
1) Ground 6C or below
2) visible moisture fog rain snow fog less than 1 mile and or
3 td spread, runways or taxi wet.
FLIGHT 10 C deg or below with visible moisture.
what are the readouts of ANTI -ICE on
With the WING AIR FOIL and TAIL AIR FOIL switches selected ON, the
AIRFOIL A-ICE ON alert is displayed. With the WING AIR FOIL, TAIL AIR
FOIL and L/R ENG anti-ice switches selected ON, the A-ICE ALL ON alert is
displayed
what is high and low stage
5th and 8th
What does Wing Anti-ice off alert mean. Wing manf fail
Pods automatically close anti-ice valve ,
Wing/tail manifold failure Pods fails to shutdown affected manifold
will the wing anti ice reset if ice is on the wing
no
what does WING ANTI-ICE OFF TAIL ANTI-ICE OFF alert mean. and WING MANF FAIL . Tail MANF FAIL
Pods detected an overheat in the Tail or Wing Manifold and shut off the system.
Pods was not able to shut off the system.
