Definitions and Calculations – Dgca question bank for pilots

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#1. Where is the reference datum?

74 inches aft of the fwd CG position

80.4 inches aft of the rear CG position

87.7 inches aft of the rear CG position

39 inches forward of the firewall

#2. What are the CG limits?

fwd limit = 74 inches to 80.4 inches

fwd limit = 74 inches, aft limit = 80.4 inches

fwd limit = 74 inches, aft limit = 87.7 inches

fwd limit = 74 inches to 80.4 inches and aft limit = 87.7 inches

#3. What is the CG at the BEM?

77 inches

87 inches

77.7 metres

77.7 inches

#4. What is the structural load limit for the floor at baggage zone ‘C’?

50 lb per square foot

100 lb per cubic foot

100 lb per square foot

100 kg per square inch

#5. What is the distance of the main undercarriage from the firewall?

97 inches

58 inches

87.7 inches

39 inches

#6. The aircraft has six seats. Assuming no other cargo or baggage, what is the maximum fuel that can be carried if all six seats are occupied and the mass of each occupant is 180 lb?

50 lb but the CG would be dangerously out of limits

155 lb but the CG would be dangerously out of limits

50 lb and the CG would be in limits

155 lb and the CG would be in limits

#7. Where is the centroid of baggage zone B?

108 inches from the datum

120 inches from the datum

150 inches from the datum

180 inches from the datum

#8. Assuming the weight and access is not a problem, where can a box of mass 500 lb be positioned if the dimensions are 0.75 ft × 1.5 ft × 5 ft?

In any of the baggage zones if placed on its smallest area

In zones ‘B’ or ‘C’ if placed on its largest area

In zone ‘C’ only if placed on its middle area

In zone ‘A’ only if placed on its largest area

#9. Assuming the weight and access is not a problem, where can a cubic box of mass 500 lb be positioned if the dimensions are 3.15 ft?

In any of the baggage zones

In zone ‘B’ or ‘C’ only

In zone ‘A’ only

In zone ‘C’ only

#10. If the landing mass is 3155 lb and the trip fuel was 40 gallons, what was the ZFM if the fuel tanks held 60 gallons of fuel prior to take-off?

3001 lb

3035 lb

3098 lb

3111 lb

#11. What is the maximum ramp mass?

3650 lb

3663 lb

3780 lb

3870 lb

#12. How far is the main wheel from the aft CG limit?

0.7 inches behind the rear datum

0.7 inches forward of the rear datum

6.6 inches forward of the rear datum

9.3 inches aft of the rear datum

#13. How far is the firewall from the fuel tank centroid?

36 inches

37 inches

38 inches

39 inches

#14. If the total moment is less than the minimum moment allowed:

useful load items must be shifted aft

useful load items must be shifted forward

forward load items must be increased

aft load items must be reduced

#15. The CG is on the lower of the fwd CG limits:

at a mass of 2500 lb and moment of 185000 lb in

at a moment of 175000 lb in and a mass of 2365 lb

at a moment of 192000 lb in and a mass of 2594 lb

all the above

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