3.1 Airplane Weight and Balance

(Refer to Figure 40.) Determine the approximate ground roll distance required for takeoff. OAT 100°F Pressure altitude 2,000 ft Takeoff weight 2,750 lb Headwind component Calm

1,150 feet

(Refer to Figure 37.) Determine the total distance required to land. OAT 32°F Pressure altitude 8,000 ft Weight 2,600 lb Headwind component 20 kts Obstacle 50 ft

1,400 feet.

(Refer to Figure 37.) Determine the total distance required to land. OAT 90°F Pressure altitude 3,000 ft Weight 2,900 lb Headwind component 10 kts Obstacle 50 ft

1,725 feet

(Refer to Figure 40.) Determine the total distance required for takeoff to clear a 50-foot obstacle. OAT Std Pressure altitude 4,000 ft Takeoff weight 2,800 lb Headwind component Calm

1,750 feet.

(Refer to Figure 34.) What is the maximum amount of baggage that may be loaded aboard the airplane for the CG to remain within the moment envelope? WEIGHT (LB) MOM/1000 Empty weight 1,350 51.5 Pilot and front passenger 250 -- Rear passengers 400 -- Baggage -- -- Fuel, 30 gal -- -- Oil, 8 qt -- -0.2

105 pounds

If an aircraft is loaded 90 pounds over maximum certificated gross weight and fuel (gasoline) is drained to bring the aircraft weight within limits, how much fuel should be drained

15 gallons

What are the standard temperature and pressure values for sea level?

15°C and 29.92" Hg

An aircraft is loaded 110 pounds over maximum certificated gross weight. If fuel (gasoline) is drained to bring the aircraft weight within limits, how much fuel should be drained?

18.4 gallons

(Refer to Figure 8.) Determine the density altitude for these conditions: Altimeter setting 30.35 Runway temperature +25°F Airport elevation 3,894 ft MSL

2,000 feet MSL

(Refer to Figures 32 and 33.) Determine if the airplane weight and balance is within limits. Front seat occupants 340 lb Rear seat occupants 295 lb Fuel (main wing tanks) 44 gal Baggage 56 lb

20 pounds overweight, CG within limits

(Refer to Figure 36.) What is the headwind component for a landing on Runway 18 if the tower reports the wind as 220° at 30 knots?

23 knots

(Refer to Figure 36.) What is the maximum wind velocity for a 30° crosswind if the maximum crosswind component for the airplane is 12 knots?

24 knots

(Refer to Figure 38.) Determine the approximate landing ground roll distance. Pressure altitude 1,250 ft Headwind 8 kts Temperature Std

366 feet

(Refer to Figure 40.) Determine the approximate ground roll distance required for takeoff. OAT 95°F Pressure altitude 2,000 ft Takeoff weight 2,500 lb Headwind component 20 kts

650 feet

(Refer to Figure 35.) What is the expected fuel consumption for a 1,000-nautical mile flight under the following conditions? Pressure altitude 8,000 ft Temperature 22°C Manifold pressure 20.8" Hg Wind Calm

70.1 gallons.

(Refer to Figure 34.) Determine the aircraft loaded moment and the aircraft category. WEIGHT (LB) MOM/1000 Empty weight 1,350 51.5 Pilot and front passenger 380 -- Fuel, 48 gal 288 -- Oil, 8 qt -- --

79.2, normal category.

(Refer to Figure 38.) Determine the total distance required to land over a 50-foot obstacle. Pressure altitude 3,750 ft Headwind 12 kts Temperature Std

816 feet.

(Refer to Figures 32 and 33.) With the airplane loaded as follows, what action can be taken to balance the airplane? Front seat occupants 411 lb Rear seat occupants 100 lb Main wing tanks 44 gal

Add a 100-pound weight to the baggage compartment

GIVEN: WEIGHT ARM MOMENT (LB) (IN) (LB-IN) Empty weight 1,495.0 101.4 151,593.0 Pilot and passengers 380.0 64.0 -- Fuel (30 gal usable-no reserve) -- 96.0 -- The CG is located how far aft of datum?

CG 94.01.

(Refer to Figures 32 and 33.) Which action can adjust the airplane's weight to maximum gross weight and the CG within limits for takeoff? Front seat occupants 425 lb Rear seat occupants 300 lb Fuel, main tanks 44 gal

Drain 9 gallons of fuel

Which combination of atmospheric conditions will reduce aircraft takeoff and climb performance?

High temperature, high relative humidity, and high density altitude.

What effect does high density altitude have on aircraft performance?

It reduces climb performance

(Refer to Figure 67.) What effect does a 30-gallon fuel burn have on the weight and balance if the airplane weighed 2,784 pounds and the MOM/100 was 2,222 at takeoff?

Moment will decrease to 2,087 lbs-in

(Refer to Figures 32 and 33.) What effect does a 35-gallon fuel burn (main tanks) have on the weight and balance if the airplane weighed 2,890 pounds and the MOM/100 was 2,452 at takeoff?

Weight is reduced by 210 pounds and the CG is aft of limits

(Refer to Figures 32 and 33.) Determine if the airplane weight and balance is within limits. Front seat occupants 415 lb Rear seat occupants 110 lb Fuel, main tanks 44 gal Fuel, aux. tanks 19 gal Baggage 32 lb

Weight within limits, CG out of limits.

(Refer to Figure 34.) Calculate the moment of the airplane and determine which category is applicable. WEIGHT (LB) MOM/1000 Empty weight 1,350 51.5 Pilot and front passenger 310 -- Rear passengers 96 -- Fuel, 38 gal -- -- Oil, 8 qt -- -0.2

cc

(Refer to Figure 36.) With a reported wind of south at 20 knots, which runway (10, 14, or 24) is appropriate for an airplane with a 13-knot maximum crosswind component?

runway 14

(Refer to Figure 60.) How should the 500-pound weight be shifted to balance the plank on the fulcrum?

1 inch to the left

(Refer to Figure 36.) What is the crosswind component for a landing on Runway 18 if the tower reports the wind as 220° at 30 knots?

19 knots.