MAINTENANCE MANUAL
STEMME TSA-M
MAINTENANCE MANUAL
STEMME TSA-M
08-10-00
Page 201
WEIGHING
1. General
A. The motorglider will only reach the flight performance and handling characteristics described in
the Airplane Flight Manual (AFM) if it is operated in the load and center-of-gravity (CG) limits.
This chapter presents information for weighing the aircraft and to determine the empty CG-
location properly. Also, the measurement of the empty mass-moment - as measured from the
reference plane (RP) - is given.
Whenever new equipment is added or any modification work is done, which may have an effect
on the empty weight or CG-position, the empty weight and the center-of-gravity location are to
be redefined.
The weight, empty CG-location and empty mass moment for the aircraft are determined during
the pre-delivery inspection. This data is then noted in the logsheet for report of the empty mass
and the CG-location (Ref. S6 AFM, latest issue).
The permitted range of empty mass CG-location (envelope) is given.
2. Tools, Equipment and Material
Required in Quantity Equipment Parts No. Manufacturer
3.A. 3 Industry scales - commercially
500 kg available
(approx. 1100 lbs)
Scale capacity
3. Weighing Procedure (refer to Weight and Balance Report, page 205/206)
A. Weighing can be carried out by means of mechanical or electrical scales. The instructions of the
scale manufacturer are to be considered.
(1) Prepare the aircraft as follows:
(1) Be certain that all items checked in the aircraft equipment list are installed in the proper
location in the aircraft.
(2) Clean and dry the aircraft, remove foreign items such as bags, rags, tools, etc.
(3) De-fuel aircraft (refer to chapter 12 „Servicing“) except for unusable fuel
(2.1 liters [0.55 US gal.] + 1 liter [0.3 US gal.], optionally).
(4) Ensure the engine oil is up to a normal full indication (2 – 3 liters [0.5 – 0.8 US gal.]).
(5) Verify the amount of coolant is 2.4 – 2.5 liters (0.63 – 0.66 US gal.).
(6) Place all control surfaces in neutral position.
(7) Close canopy.
(2) Place scales under each wheel. Be sure that no side forces act on the scales to avoid wrong
readings.
(3) Level the aircraft as shown in Figure 201.
NOTE: Weigh the aircraft inside a closed building to prevent errors in the scale readings
due to wind.
Nov 18/11
EFFECTIVITY
Model S6
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