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29 Cards in this Set
- Front
- Back
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What is datum |
Vertical plane where all measurements are taken from forward and backwards |
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Items for W/B in TCDS |
DCUBSFLEW, Datum, CG limits, unusable fuel, baggage, seats, fuel capacity, leveling, engine HP, weight max |
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Why have W/B |
Safety and efficiency in flight |
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What is moment |
Force to rotate aircraft around 1 axis, WxA=M weight times arm equals moment |
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How to make negative moment forward of datum |
Add weight |
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What is an arm |
Distance In inches forward or aft of datum |
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What is tare weight |
Weight of extra equipment, must subtract from scale reading |
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What is minimum fuel |
Fuel needed for an extreme condition, to check center of gravity |
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Residual fuel |
Fuel left after exhaustion in lines, tanks, ect... part of empty weight |
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What is CG |
Distance in inches from forward and aft acceptable CG |
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Load graph |
Method to determine load distribution to stay in CG |
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How to get CG if records are missing |
Re weigh and calculate new W/B |
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Fixed vs rotorary wing CG |
Helo is smaller CG |
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Determine empty weight with fixed equipment installed |
Include it in empty weight |
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Why consider aircraft category |
Different max gross weight, normal and utility |
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CG location vs center of lift |
CG In front of center of lift |
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What are 2 common ways of CG |
Inches from datum and aerodynamic cord % |
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Does FAA require regular weighting of private aircraft |
No |
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Where keep empty weight and CG records |
Flight manual and w/B record |
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W/B when can't drain |
Compensate for the weight of fuel and temp by subtraction |
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How drain fuel for W/B |
Level first as per TCDS |
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What is a ballast |
Lead bars, metal plates to adjust CG |
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How to fix OOL CG after adding weight in engine compartment |
Add more ballast weight |
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Placard requirements for ballast weight |
Location, and limits on content, weight |
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Permanent ballast markings |
Red permanent ballast Do not remove |
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How should aircraft be levels for W/B |
As per type certificate data sheet or aircraft specs |
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One method of leveling g during W/B |
Built in level scale or plumb bob |
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What is plumb bob |
Weight attached to string to mark point directly below where hung from |
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Determine if part will affect CG without ding W/B |
Basic computation if records are up to date |
