DASH 1 Sec 7: Adverse Weather Operations Flashcards
TOLD must be recomputed if temperature varies by more than _____ C, pressure altitude changes by more than ____ feet or gross weight changes by more than ______ pounds.
5;500;500
Severe windshear produces vertical speed changes greater than _____ feet per minute.
500
After completion of a 30-flap landing at an airfield with slush you should. (with flaps)
retract flaps to 10 and retract to zero if runway is clear, before proceeding onto slush covered taxiways
An external power unit is required for engine start at ambient temperatures below _____
5 F
List some indicators of windshear.
thunderstorms/frontal passage/large temperature inversions/PIREPS,LLWAS/virga
If you must penetrate a thunderstorm, continue to trim during airspeed variations to avoid undue stress on the aircraft.
FALSE
The potential for a lightning strike increases when the aircraft is flown.
near the freezing level
Do not ground the aircraft prior to making an initial aircraft inspection following a suspected lightning strike.
FALSE
Windshear is considered sever when it produces airspeed changes greater than _____KIAS.
15
Microburst downdrafts have been measured exceeding 7000 feet per minute.
TRUE
For takeoffs during windshear conditions, use the ______ runway and _____ degree flaps.
longest;10
If performance data allows, increase your rotation speed up to _____ knots for takeoffs during windshear conditions.
10
If acceptable takeoff performance can only be achieved by selecting _____ degree flaps ACM ___combination, takeoff in windshear conditions is not recommended.
0;off
Reference groundspeed is the expected groundspeed _______.
on final at approach speed in a no-shear condition
Reference groundspeed is computed by subtracting the surface headwind component from _____.
approach TAS
If you are attempting an approach in windshear conditions, compute reference groundspeed and compare to actual groundspeed no later than ______, and use _____flaps.
FAF; 10
The autopilot should never be used during an approach in windshear conditions.
FALSE
An approach during windshear conditions should be stabilized no later than _____ feet AGL or the plot will abort the approach.
1000
If you must taxi through snow or slush, do not use the parking brake after you have stopped the aircraft.
TRUE
If you must taxi through ice or snow for takeoff, flaps should be _____ until ______ to avoid ice accumulation.
retracted; approaching the runway
Accumulations of 1/2 inch of ice on aircraft surfaces can add _____ pounds or more to aircraft gross weight.
500
If actual icing is encountered during flight, no greater than ___ degrees flaps may be utilized for landing unless the icing conditions were encountered for less than ____ minutes and the RAT was warmer than ____; OR a RAT of ____ or warmer is observed du
10;10;-8;10
After landing on a snow or slush covered runway, do not retract the flaps beyond ____ degrees to prevent ice accumulation or damage.
10
Do not operate _____ at the same time as electric heat while using external power.
defog blower or windshield heat
Ice may form on the compressor blades and guide vanes when in visible moisture at an OAT/SAT of ____ C or colder.
5
You are cycling the speed brakes as you taxi to the runway during very cold weather when you notice the speed brakes do not fully retract. You should continue with the sortie since that is okay.
TRUE
During engine starts in hot weather, expect slower engine acceleration to idle than on a normal day.
TRUE
If approach speed is 116 KIAS, the corresponding TAS will be highest when the temperature is higher or lower.
higher
_______ hydroplaning occurs when a wedge of water builds up pressure between the tires and pavement.
dynamic
The weather radar system will detect and depict volcanic dust.
FALSE
Hydroplaning is a gradual process and partial hydroplaning will occur first.
TRUE
The two major factors in determining when total hydroplaning occurs are ______.
tire pressure and groundspeed
______ hydroplaning occurs on surfaces with a smooth texture.
viscous
_____- hydroplaning is caused by a skid and where the tire rides on a boundary layer of steam
reverted rubber
______ is the most frequently encountered type of hydroplaning.
dynamic
The minimum total hydroplaning speed in the T-1 is approximately _____ KIAS.
100
If the tire pressure for your aircraft is 120 PSI, the minimum total hydroplaning speed for your aircraft is approximately.
99 (square root of 120 =11 multiplied by 9 = 99
Target penetration airspeed for turbulence or thunderstorms is ___ KIAS or ___ MACH, whichever is lower, will provide adequate attitude control without excessive structural loads.
200; 0.58
To reduce vision deteriorating from lighting, the white flight deck lights should be set to maximum prior to penetration.
TRUE
If in turbulence/thunderstorms, you should chase your airspeed and altitude.
FALSE
Windshear is considered severe when it produces airspeed changes greater than _____KIAS.
15
Reference groundspeed is computed by subtracting the ______ from _____.
surface headwind component, approach TAS
Recommended windshear recovery is to ______
Immediately apply full power (don’t hesitate to “firewall” the throttles) and rotate towards 15 degs, increasing AOA to the stick shaker.
An approach during windshear conditions should be stabilized no later than _____ feet AGL or the pilot will abort the approach.
1000
With the exception of ____, do not use aircraft anti/deice systems to deice the aircraft prior to flight.
window heat
____ taxi speeds are recommended and help prevent the main wheel tires from throwing slush on the flaps.
slower
If actual icing is encountered during flight, no greater than ___ degrees flaps may be utilized for landing unless the icing conditions were encountered for less than ____ minutes and the RAT was warmer than ____; OR a RAT of ____ or warmer is observed during descent, approach, or landing
10, 10, -8, 10 (Celsius)
Engine inlet heat should not be operated while on the ground at temps above __ degs C OAT/SAT except for ____.
10, preflight
T/F Do not operate engine anti-ice on the ground except for preflight test.
FALSE
During hot weather, TAS are ___ at the same indicated airspeeds.
higher
Total hydroplaning is a gradual process and partial hydroplaning will occur first.
TRUE
Depending on rwy and tire conditions, hydroplaning can occur in depths less than ___ inch of slush and water
0.1
