In one of the exam prep tests. the questions give the following.

Refer to page 18 of the work booklet.

Loading data for a given flight in an Echo aeroplane are -

Basic empty aircraft weight.........1970 kg
Basic empty moment index............480
Load in forward compartment.........50 kg
Pilot and three passengers loaded in the front and middle rows
All persons weigh 77 kg

The maximum fuel that may now be loaded in the main tanks only is closest to -
Select one:
45 kg Incorrect
180 gals
100 gals
33 gals

It looks like there is a typo in the answer. It has the main tank of 90kg, but uses the BEW 1970, instead of the ZFW totals including the PC and PIlot 2328. See attached.

Just a simple typo - the sums, otherwise, are OK.

The answer is a bit over 34G, so 33G fits the bill.

It seems that the question may indeed contain a typo or an error in the calculation for determining the maximum fuel load. Based on the details provided:

Basic Empty Weight (BEW): 1970 kg
Load in Forward Compartment: 50 kg
Weight of Pilot and Three Passengers: 4 x 77 kg = 308 kg

Adding the load and pilot/passenger weight to the BEW gives:
Zero Fuel Weight (ZFW)=1970 kg+50 kg+308 kg=2328 kgZero Fuel Weight (ZFW)=1970 kg+50 kg+308 kg=2328 kg

The problem states that the main tank has a fuel weight of 90 kg, which seems to be inconsistent with the provided answer choices. To find the closest answer, you should:

Recalculate Maximum Fuel Load: Use the correct ZFW of 2328 kg to determine the maximum allowable fuel load.

Check Conversion Factors: Ensure that the conversion from kilograms to gallons is accurate. Note that 1 gallon of aviation fuel is approximately 3.785 kg.

Here's a refined comment you could use:

Comment:

It appears there may be a discrepancy in the provided question. Given the Basic Empty Weight (BEW) of 1970 kg, along with an additional load of 50 kg and 308 kg for the pilot and passengers, the correct Zero Fuel Weight (ZFW) totals to 2328 kg. The maximum fuel load provided in the answer choices does not align with the BEW used in the calculations, which suggests there might be an error.

To accurately determine the maximum fuel load, it is crucial to base the calculation on the correct ZFW. Additionally, verifying the conversion from kilograms to gallons is essential. Given that 1 gallon of aviation fuel is approximately 3.785 kg, the closest match should be verified against this conversion. spelling bee answers

I recommend reviewing the problem details or contacting support for clarification to ensure that the correct figures and units are used.