Tecnam P92 Echo MKII - Weighing Procedure

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1
rd
Edition, Rev 0
Section 6 – Weight and Balance
WEIGHING PROCEDURES
2 WEIGHING PROCEDURE
PREPARATION
 Carry out weighing procedure inside closed hangar
 Remove from cabin any objects left unintentionally
 Insure on board presence of the Flight Manual
 Align nose wheel
 Drain fuel via the specific drain valve.
 The unusable fuel for each tank must be considered (1.55 liter)
 Oil, hydraulic fluid and coolant to operating levels
 Move sliding seats to most forward position
 Raise flaps to fully retracted position (0°)
 Place control surfaces in neutral position
 Place scales (min. capacity 200 kg) under each wheel
LEVELLING
 Level the aircraft.
Reference for levelling: remove a seat and then place a level between the
two seat’s fwd and aft supporting trusses.
 Center bubble on level by deflating nose tire
WEIGHING
 Record weight shown on each scale
 Repeat weighing procedure three times
 Calculate empty weight
DETERMINATION OF C.G. LOCATION
 Drop a plumb bob tangent to the leading edge (at 15mm inboard respect
the rib#7 riveting line) and trace reference mark on the floor.
 Repeat operation for other wing.
 Stretch a taught line between the two marks
 Measure the distance between the reference line and main wheel axis
 Using recorded data it is possible to determine the aircraft's C.G. location
and moment (see following table)