Perform De-Ice / Anti-Ice Flashcards
(16 cards)
What are the critical surfaces on the CRJ?
Those surfaces that must be free of frozen contaminants
i. Wing leading edges, wing forward and rear upper surfaces (including winglets), and associated flight controls.
ii. Horizontal stabilizer leading edge, forward and rear upper surfaces, and associated flight controls
iii. Vertical stabilizer and associated flight controls
iv. Engine inlets
Critical areas that must be free of frozen contaminants are:
*Air data probes/sensors
*AOA vanes
*Antennas
*Fuel drains and NACA vent scoops
*APU intake/exhaust
*Landing gear
*Flight deck windshields and windows
What elements will the deice crew communicate to the flight crew regarding element C?
Element C: Specify the time of the beginning of the final deicing/anti-icing step. This time can be expressed to the crew in local, military, or how many minutes ago the fluid application began.
Has the fluid failed if snow is observed on top of the wing after deice / anti-ice process?
Yes
Fluid failure occurs when frozen contamination eventually accumulates on the surface of the fluid and is no longer being absorbed by the fluid.
Calculate a holdover time using the following conditions: 050/10 1/2SM SN OVC003 -03/-03 A29.93
Clariant Max Flight 04.
Does not exist for heavy snow.
When does the holdover time begin?
When the final application of the deicing/anti-icing fluid commences.
What is the purpose of advancing thrust levers (one at a time) to 60% N1 for 20 seconds on the Post Deice / Anti-Ice check?
Verify engines are clear of fluid or contaminates.
What areas of the aircraft are normally sprayed when Type I is requested?
Entire aircraft
What areas of the aircraft are normally sprayed when Type IV is requested?
Wings and tail
If asked by the deice crew, is it acceptable to advise the deice crew of where to apply fluid?
Yes
What is the difference between deicing and anti-icing?
Deicing is a procedure used to remove frost, ice, slush, or snow.
Anti-icing is a procedure used to provide protection against the formation of frost, ice, and the accumulation of snow or slush on clean surfaces of the aircraft for a limited period of time once the aircraft has been deiced.
How is the aircraft configured for deicing / anti-icing?
In accordance with the Flight Deck Deicing/Anti-ice Checklist.
When should you consider deicing the landing gear?
When operations have been, or will be, conducted on heavily contaminated ramps and/or runways.
What is the threat of using deice / anti-icing fluid in the landing gear area?
Damage to carbon brakes from water or fluid mixture spray.
When is a Pretakeoff check required? How and from where is it accomplished?
Anytime the aircraft has been deiced/anti-iced, and an HOT has been established, to ensure critical surfaces remain free of frozen contaminants.
From whatever vantage point in the aircraft the PIC determines gives an accurate indication of the condition of the representative surface.
When is a Pretakeoff contamination check required? How and from where is it accomplished?
When freezing or frozen precipitation has been present since completion of the Post Deicing/Anti-icing Check and,
a) The HOT has been exceeded, or
b) The HOT is no longer valid due to changing weather conditions, or
c) Operations in heavy snow are being conducted.
The Pretakeoff Contamination Check is performed from inside the cabin. The Captain:
i.Sets the aircraft parking brake and the aircraft remains static while the check is conducted.
ii. Turns the landing and taxi lights off.
iii. Turns the wing inspection lights on.
iv. Makes a cabin announcement to inform the passengers a flight deck crewmember will be entering the cabin to conduct an inspection of the wings for the purpose of ensuring the absence of frozen contaminants prior to takeoff.
The flight deck crewmember conducting the check:
i. Calls the flight attendant and asks to have the ceiling lights switched to dim and all other cabin lights turned off during the low-light conditions.
ii. Enters the cabin using the Pilot Out-of-Flight Deck protocol.
iii. Proceeds to the most advantageous row from which to view the wing upper surfaces.
iv. Asks the passengers seated in the adjacent rows to stand in the aisle while the inspection is performed, as appropriate.
v. Conducts a close visual inspection of both wing upper surfaces, including associated control surfaces and winglets.
vi. Determines if the wing upper surfaces are free of frozen contamination.
vii. Asks passengers to be re-seated and to fasten seat belts.
viii. Regains entry to the flight deck using Pilot Out-of-Flight Deck protocol.
ix. Reports findings to the PIC, as applicable.
Is the CRJ 200 allowed to operate in heavy snow?
No
