+SN
05-05-2019, 08:15 AM
#2
Perennial Reserve
Joined APC: Jan 2018
Posts: 11,480
Legally, in accordance with the FOM, or successfully?
And why do you ask?
Legally, I believe this is the applicable guidance:
https://www.faa.gov/documentLibrary/...78_FAA_Web.pdf
This is the applicable subsection:
(2) Takeoff in Heavy Snow Conditions. Operators with a deicing program approved
in accordance with § 121.629 will be allowed to takeoff in heavy snow conditions subject to the following restrictions:
• The aircraft must be anti-iced with undiluted Type II, III, or IV fluids.
• The aircraft critical surfaces must be free of contaminants, or the aircraft must be
properly deiced before the application of the anti-icing fluid.
• When appropriate, the operator must accomplish an approved tactile and/or visual
check of the aircraft critical surfaces within 5 minutes of takeoff.
• If this check is accomplished visually from within the aircraft, the view must be
such that it is not obscured by deicing/anti-icing fluid, dirt, or fogging. If the critical surfaces cannot be seen due to snowfall, distance from the viewing position, inadequate lighting, or for any other reason, the check must be a visual or tactile check conducted from outside the aircraft.
• If a definitive fluid failure determination cannot be made using the checks prescribed, takeoff is not authorized. The aircraft must be completely deiced, and if precipitation is still present, anti-iced again before a subsequent takeoff.
And why do you ask?
Legally, I believe this is the applicable guidance:
https://www.faa.gov/documentLibrary/...78_FAA_Web.pdf
This is the applicable subsection:
(2) Takeoff in Heavy Snow Conditions. Operators with a deicing program approved
in accordance with § 121.629 will be allowed to takeoff in heavy snow conditions subject to the following restrictions:
• The aircraft must be anti-iced with undiluted Type II, III, or IV fluids.
• The aircraft critical surfaces must be free of contaminants, or the aircraft must be
properly deiced before the application of the anti-icing fluid.
• When appropriate, the operator must accomplish an approved tactile and/or visual
check of the aircraft critical surfaces within 5 minutes of takeoff.
• If this check is accomplished visually from within the aircraft, the view must be
such that it is not obscured by deicing/anti-icing fluid, dirt, or fogging. If the critical surfaces cannot be seen due to snowfall, distance from the viewing position, inadequate lighting, or for any other reason, the check must be a visual or tactile check conducted from outside the aircraft.
• If a definitive fluid failure determination cannot be made using the checks prescribed, takeoff is not authorized. The aircraft must be completely deiced, and if precipitation is still present, anti-iced again before a subsequent takeoff.
Last edited by Excargodog; 05-05-2019 at 08:30 AM.
05-05-2019, 08:17 AM
#3
Gets Weekends Off
Joined APC: Nov 2014
Position: E170 CA/LCA
Posts: 621
Originally Posted by 8ballfreight
Is republic able to depart in heavy snow?
I believe if you can depart 5 minutes after de ice and a pre contamination check has been completed. I have never seen it done in real life because no one wants that liability and generally the airport is a cluster and 5 minutes isn’t possible.
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05-05-2019, 08:21 AM
#4
Banned
Joined APC: Mar 2019
Position: B757 seat 41B
Posts: 149
Originally Posted by 170driver
I believe if you can depart 5 minutes after de ice and a pre contamination check has been completed. I have never seen it done in real life because no one wants that liability and generally the airport is a cluster and 5 minutes isn’t possible.
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Do you guys not use Type IV?
05-05-2019, 09:26 AM
#8
Gets Weekends Off
Joined APC: Nov 2014
Position: E170 CA/LCA
Posts: 621
Originally Posted by Base2Final
There is no hold over time for HEAVY SNOW for TYPE I through IV.
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Exactly why no one wants to take the liability, you can technically go as long as the pre contamination check of the wings is satisfactory.
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