Ice and Rain Protection Flashcards
what is the slowest speed in icing conditions clean?
150 kias
what is the slowest (min.) speed to engage the wingstab?
150 kias
when must crew activate the Ice Protection System?
when icing conditions are anticipated or exist - per Section 3 / Normal Procedures
define: “when icing conditions exist or are anticipated”?
icing conditions may exist whenever:
1) the SAT (static air temp) on the ground or for takeoff, or TAT (total air temp) in flight, is 10°C or below and visible moisture in any form is present (such as clouds, fog with visibility of one mile or less, rain snow, sleet or crystals).
2) SAT on the ground is 10°C or below and ramps, taxiways, or runways are contaminated with surface snow, ice, standing water, or slush.
operation in icing conditions:
- maximum takeoff and landing altitude?
10,000 ft
while operating icing conditions, what is the minimum airspeed (clean) when the wing and stabilizer anti-ice system inhibited?
165 kias
while operating icing conditions, what is the minimum airspeed (clean) when the wing and stabilizer anti-ice system is inhibited?
165 kias
while operating icing conditions, what is the minimum airspeed (clean) when the wing and stabilizer anti-ice system is armed?
165 kias
while operating icing conditions, what is the minimum airspeed (clean) when the wing and stabilizer anti-ice system is uninhibited?
150 kias
what is the limitation regarding contaminated aircraft surfaces?
T/O is prohibited with frost (polished or not), ice, snow, or slush adhering to wings, control surfaces, engine inlets, or other critical surfaces.
in what environmental condition is flight prohibited?
- flight into freezing drizzle or freezing rain is prohibited
- the pilot must immediately exit the freezing rain or freezing drizzle conditions by changing altitude or course.
what are the limitations regard the use of the Autopilot in icing conditions?
A/P use is prohibited, when:
a) in severe icing
b) unusual control force / deflection, or unusually large control forces are required to move flight controls when the A/P is disconnected
c) there are indications of frequent A/P re-trimming during straight and level flight
when must wing inspection light be operative?
prior to flight into known or forecast icing conditions
engine 1&2 de-ice controlled and fed by?
switches on ICE panel and bleed from related engine
WHSAIS controlled by and power by?
switch on ICE panel and bleed routed from both engines
