Extra 200 - Weighing and Center of Gravity Calculation

CHAPTER 08
PAGE 4
EXT
RA - FLUGZEUGBAU GmbH
SERVICE MANUAL EXTRA 200
PAGE DATE: 1. July 1996
08-10-00 WEIGHING AND
CALCULATION OF C OF G
N O T E Weigh the aircraft only on even floor and in closed halls
(wind protected). Use three identical scales.
1 Ensure that the aircraft is fully equipped with equip-
ment in locations according to the equipment list
(PILOT´S OPERATING HANDBOOK & FLIGHT
MANUAL (POH&FM), Section 6).
2 Defuel the aircraft (wing tanks, center and acro tank)
to the unusable fuel level.
3 Replenish engine oil to the minimum sump capacity
for acrobatic flight (refer to POH&FM Section 1)
4 Remove foreign objects (e.g. tools, luggage).
5 Clean and dry the aircraft.
6 Put the rear seat to middle position and close canopy.
7 Weigh two of those wheel chocks that will be used for
securing the main wheels. Enter the weight below in
Page 5 "Tare weight scale 1/2 (chocks)".
8 Weigh the jack that will be used for jacking the tail
wheel. Enter the weight below in Page 5 "Tare weight
scale 3 (jack)".
9 Roll the main wheels onto the scales 1 and 2.
10 Level the aircraft as per ch. 08-20-00.
11 Put the control surfaces to neutral position.
12 Drop perpendiculars from the underside of the fire wall,
the centers of the main wheels and the tail wheel and
mark on the floor to get the arms X
1
and X
2
(see Page 6).
13 Enter the arms on page 6.
14 Read the scales and enter the weights below. Calculate
the net weights and transfer the values to Page 6.