Chpt 12 - All Weather Ops

Question 1

What speed do we hold at?

Answer 1

170

Question 2

ice accumulation may have the following effects:

Answer 2

1. Increased takeoff distance, landing distance, and stall speeds.
2. Reduced rate of climb.
3. Increased power requirement, thus increasing fuel consumption and decreasing range and endurance.
4. Noticeable decrease in aircraft maneuverability, including reduced directional stability and control at high sideslip angles, and heavier than normal stall buffet when approaching stall airspeeds (more prominent as flap settings approach zero).
5. Reduced engine power due to obstruction of the engine inlet air duct.

Question 3

After prolonged exposure to icing, the radome may accumulate ice that will not shed easily. This may result in degraded radar returns in the ground mapping mode within __° of the nose at ranges beyond __ nm. Increasing the radar gain should overcome these losses. The weather mode should only be minimally affected with some loss of low intensity weather returns such as snow showers.

Answer 3

30

40nm

Question 4

Do not turn off the wing/empennage ice protection system when ice is detected (falsely or not). Doing so may prevent all ice from being cleared from the aircraft and will activate the ___ ACAWS message, resulting in limited crosswind landing capability.

Answer 4

X-WIND LIMITED

Question 5

The wing/empennage ice protection system should be left in ___ mode until the icing cycles have been completed.

Answer 5

AUTO

Question 6

If ice is detected during the takeoff roll and the wing/empennage ice protection system is in AUTO or ON, the system becomes operative at a calibrated airspeed of __ knots, which may result in a noticeable horsepower decrease. This decrease is more significant at higher density altitudes, and may be as much as __ percent.

Answer 6

60

30%

Question 7

Wing/empennage and propeller blade and aft spinner ice protection are ___ during taxi.

Answer 7

not functional

Question 8

If landing gear retraction is required following extended exposure to icing conditions, ___ to remove accumulated ice before accelerating above the gear limiting speed. The main landing gear doors may not completely close on the first attempt due to ice accumulation. There is no indication in the flight station of landing gear door position.

Answer 8

cycle the gear at least once

Question 9

The wing/empennage ice protection system should not be operated in the anti-icing mode except during approach and landing. Operation at power settings above __ hp at temperatures below __ °C or at pressure altitudes above __ feet at any hp may degrade engine life

Answer 9

2,500 HP
-30
20,000 ft

Question 10

If possible, avoid high angles of attack during periods of transition from icing to melting conditions and/or ice shedding from the center wing section. If ice is shed from the center wing section when the aircraft is at high angles of attack, it is very likely that the shedding ice will strike the ___ and possibly cause extensive damage to the ___.

Answer 10

horizontal tail

horizontal tail leading edge

Question 11

For all landings where icing conditions have been encountered and the ice may not have cleared (within approximately __ minutes of landing), increase landing approach and threshold speeds with __ percent flaps by__ knots, approach and threshold speeds with __ percent flaps by __ knots, and approach and threshold speeds with flaps retracted by __ knots. Add the gust factor (up to __ knots).

Answer 11

6 mins
100%
6 kts
50%
10 kts
20 kts
10 kts

Question 12

Engine inlet air duct icing in clear air is possible in some combinations of temperature and humidity, depending on the engine power setting and the airspeed. This icing is caused by the sudden drop in ___ resulting from ___ loss in the engine inlet air duct.

Answer 12

temperature

pressure

Question 13

Heavy rain can:

Answer 13

1. Reduce lift by up to 30 percent at high angles of attack such as during approach or missed approach profiles.
2. Increase drag up to 30 percent.
3. Cause the aircraft to slow down faster than normal when engine power is reduced.
4. Cause engine rollback and flameout.
5. Cause turbulence.

Question 14

Visibility through the windshields will be reduced by streaking as the windshield wipers are ineffective at speeds above __ KIAS.

Answer 14

180

Question 15

If extreme precipitation is encountered and cannot be avoided:

Answer 15

1. Reduce power as required to reduce airspeed to 180 KIAS.

2. Maintain engine power above 700 horsepower.

Question 16

The amount of shear is greater ahead of ___ fronts, although the most common occurrences follow the passage of ___ fronts during periods of gusty surface winds.

Answer 16

warm

cold

Question 17

When a temperature change of __ °F or more is reported across the front or if the front is moving at __ knots or more, conditions are conducive to windshear.

Answer 17

10 F

30 kts

Question 18

The LPCR is designed to detect low-level microburst windshear activity and provides range dependent variable levels of windshear alert from __ to __ nm.

Answer 18

0 to 5

Question 19

Windshear indications may include all or some of the following:

Answer 19

1. ±20 knots airspeed.
2. ±500 fpm altitude changes.
3. ±6° pitch attitude changes.
4. ±1.5 dot glideslope deviation.

Question 20

Windshear

In relation to a known surface wind, be alert for:

Answer 20

1. An unusually steep or shallow rate of descent required to maintain glide path.
2. An unusually high or low power setting required to maintain approach airspeed.
3. A large variation between reported surface wind and displayed winds (HUD wind vector or HDD wind triangle).

Question 21

Cold weather is generally considered to be __°F and below.

Answer 21

32