Winter Ops Flashcards
What are the maximum depths of runway contaminants for take off?
When more than 25% of the runway surface area, within the required length and width being used for takeoff)
Standing Water 0.5 in,
Slush 0.59 in,
Wet Snow. 0.75 in,
Dry Snow 3 in,
(Different for landing)
What is visible moisture by bombardier definition for a WAT data?
Any precept or cloud below 1500 ft
Wat data - visible moisture - YES
Ice ACC - yes
Icing conditions - no unless less than or = to 10*
When do we add the malfunction additive to the Vga and Vac?
Always
They go on top of the Vref Vga Vac calculated
(Write them down before you erase)
(Bleed inop has special unequal additives)
What do we do different on the ice shedding procedures on the ground in heavy Snow?
60% N1 and hold it for 10 sec
What runway condition are not considered a contaminant but are equivalent to WET runway condition code?? (3)
Frost
Damp
Trace
Contaminants with depth = 1/8” (0.13”) or 3 mm
FOM Apdx 4 16.1.2.8 and chart on 16.1.2
What runway condition code do we use for a sanded or chemically treated ice with CRFI >0.40?
Compact snow
What runway condition code for landing do we use when contaminants are less than 25%?
Wet 5
What ice contaminants which in combination of ice conditions >25% is prohibited?
Wet ice,
Water over ice,
Dry or wet snow over ice,
Slush over ice,
Water over compact snow,
When is WAI inhibited ?
> 60 Kts until 1500 ft
What conditions are we not allowed to take off in? (4)
Hail
Heavy Ice pellets
Moderate or heavy freezing rain
What precipitation conditions are we not allowed to land in?
Moderate or heavy freezing rain
What RwyCC is prohibited for landing?
RwyCC 0
If icing is picked up on approach what has to be done after landing?
(3)
Leave flap/slat extended
Advise maint
Defect in log book “for information only - slat/flaps operated in icing conditions “
What happens if there is a disagreement on deice?
Tactile inspection
Then most conservative action taken
When looking for runway condition on an EASA what do you have to remember
Only lists lower number for runway
07/25 only see 07
Can you do single eng taxi with a contam runways
No
Can you take off in ice pellets if they stop?
Yes up to 90 min, as long as the temperature does not drop
When do we have to do a PDI? (3)
1 truck,
Outside North America,
Any doubt to the effectiveness of fluid,
What is alpha limit?
ALPHA LIMIT (Caution) message is displayed by the Fly-by-Wire
system after ice has been detected and the wing anti-ice is off.
Flap 5 use Vref +5
See chart for limitations AOM SUP PRO 1.03.30
When is the Ice-dispersal procedure used and what is the procedure?
Ice-Dispersal Procedure must be accomplished when directed by a
Non-Normal procedure or whenever the crew believes the ice has
been accreted on the aircraft. This procedure allows for FLAP 4 or
FLAP 5 landings, with a ΔVREF of 10 knots when ice remains on the
wings’ leading edge.
(AOM Supplemental Pro 1.03.30)
(When wing anti-ice failure in icing conditions exists, the ALPHA LIMIT
(Caution) message will likely be displayed. In this case, combining ΔVREF values or multiplying OLD factors for the different Non-normal checklists or FLAP 5 in icing is not required)
What do you do if you encounter engine vibrations in flight?
Momentarily increase to CLB thrust
Considerations for holding when picking up ice?
Do not extend slats/flaps
What is the limitation for X-wind Take off on ice?
10 kt X-Wind for take off and Landing
When doing a LNAV APP with temp comp, 50 ft must be added. What is temp comped the MDA then add 50 ft, or MDA + 50 ft both temp comped?
MDA + 50 ft, then temp comp