Perform Deice/Anti-Ice Procedures

Question 1

CA – When is a cold weather pre-flight inspection required?

Answer 1

OAT ≤5ºC, OR

Atmospheric conditions conducive to icing exist, OR

Aircraft RON and may have been subject to
contamination, OR

ice from the previous leg, OR

wing fuel temp ≤0ºC
(SOPM 4-01.53 and GDPM 4.4)

Cold soak ice is suspected in the fuel tank area
(GDPM 4.4)

Question 2

FO – How is a cold weather pre-flight inspection conducted?

Answer 2

Visual and tactical inspection. Run your hand along the wing (GDPM 4.5)

Question 3

CA – What is the clean aircraft concept?

Answer 3

Don’t take off with frozen contaminants adhering to critical surfaces (GDPM 6.1)

Question 4

FO – Is it ever permissible to takeoff with contaminants on the under surface of the wing and if so what type of contaminant and maximum thickness?

Answer 4

Yes. Underwing frost caused by cold fuel. Up to 1/8 inch (GDPM 4.5)

Question 5

CA – What is a Hold Over Time?

Answer 5

Estimate of time the deicing/anti-icing fluid remains effective (GDPM 2.8)

Question 6

CA – If the snowfall intensity is absent in an official weather observation, how is snowfall intensity determined when calculating a Hold Over Time?

Answer 6

Use the visibility chart in the EHOT APS app

Question 7

FO – Is it advisable to use Snowfall Intensities as a Function of Prevailing Visibility chart when visibility is reduced by snowfall along with other forms of obscuration (FG, HZ, FU)?

Answer 7

CAUTION: When the visibility is reduced by snowfall along with other forms of obscuration, such as fog, haze, smoke, etc., the actual snowfall intensity may be overestimate.
(GDPM B.4)

Question 8

FO – Is it advisable to use Snowfall Intensities as a Function of Prevailing Visibility chart when visibility is reduced by snowfall along with other forms of obscuration (FG, HZ, FU)?

Answer 8

CAUTION: When the visibility is reduced by snowfall along with other forms of obscuration, such as fog, haze, smoke, etc., the actual snowfall intensity may be overestimate.
(GDPM B.4)

Question 9

CA – During the Pre Deice/Anti-Ice check, what information is communicated from the flight crew to deice personnel?

Answer 9

Aircraft tail number
Aircraft configured for deicing
Types of fluid required
Surfaces to be deiced/anti-iced
(DEICE/ANTI-ICE CHECKLIST)

Question 10

FO – What Elements are required to be communicated from deice personnel to the flight crew?

Answer 10

Elements A, B, C, E
A: type of fluids
B: fluid concentration in percentage
C: Time of final application
E: post deicing and/or anti-icing check is complete
(DEICE/ANTI-ICE CHECKLIST)

Question 11

CA – Is the Flight Deck Deice/Anti-Ice Checklist completed as challenge and response?

Answer 11

Yes (DEICE/ANTI-ICE CHECKLIST)

Question 12

FO – What is a pretakeoff check and when is it required to be conducted?

Answer 12

Check to ensure critical surfaces remain free of frozen contaminants.
Performed anytime the aircraft has been deiced/anti-iced and a HOT has been established.
(GDPM 4.20)

Question 13

CA – What is normally the representative surface on SkyWest aircraft?

Answer 13

Outer/upper wing surfaces. Should be seen from the flight deck. If not, look out the cabin windows.
(GDPM 4.20)

Question 14

FO – What action must be taken if the crewmember conducting the pretakeoff check is unable to determine if the representative surface is free of frozen contaminants?

Answer 14

Repeat the deice/anti-ice process and establish a new HOT (GDPM 4.20)

Question 15

CA – How do you determine if de-ice and/or anti-ice fluid has failed?

Answer 15

Usually loses its glossiness. Dulled, crystalline appearance. Accumulated snow. (GDPM B.6)

Question 16

FO – When is a pretakeoff contamination check required?

Answer 16

Freezing or frozen precip has been present AND

HOT has been exceeded, OR
HOT is no longer valid due to changing conditions, OR
Operations in heavy snow are being conducted
(GDPM 4.21)

Question 17

CA – How is a pretakeoff contamination check conducted?

Answer 17

Within 5 minutes of takeoff:
set parking brake, pilot out of flight deck protocol, use flashlight to inspect wings from cabin windows, back to flight deck and report findings
(GDPM 4.21)