Limitations
G-load factors
max. positive wing load: + 4 G
max. negative wing load: – 2 G
These values correspond to ASTM standards for LSA’s. All parts have been tested to a safety factor of
a minimum of 1.875, meaning they were subjected to at least a load of 7.5 G
Service ceiling and airspeed reductions
Service ceiling is not limited, however due to the glider-type construction and aerodynamics, the
VNE must be regarded as TAS when ying higher than 9000 ft. VNE limits are also provided on the
cockpit placard.
WARNING! Above pressure altitude of 3000 ft, the VNE MUST be treated as True
Air Speed (TAS). Indicated Air Speed (IAS) MUST be reduced accordingly! Table with
IAS, TAS relation for the VNE of 120 kts is provided below:
Altitude 0 ft 6000 ft 12000 ft 18000 ft
TAS 120 kts 120 kts 120 kts 120 kts
VNE
(IAS)
120 kts 111 kts 100 kts 92 kts
Maneuver limits
Sinus 912 LSA is approved under ASTM standard F2564 and is intended for recreational
and instructional ight operations. In the acquisition of various pilot certicates certain
maneuvers are required and these maneuvers are permitted in this airplane.
Following NON Aerobatic manoeuvres are permitted as dened:
•
Power-on and -o stalls not below 1500 feet (450 meters) above ground level.
•
Power on and o lazy eights not below 1500 feet (450 meters) above ground level,
entry speed 90 kts
•
Steep turns with initial speed of 80 kts.
•
Chandelle maneuvers not below 500 feet (150 meters) above ground level, entry
speed 105 kts.
•
Spin initiation and recovery (at most 180° in actual spinning manoeuvre).
WARNING! Aerobatic maneuvers, including full developed spins, are prohibited.
CAUTION! Intentional ying with both cabin doors open is prohibited. Flying with one door
open in ight is approved with airspeeds up to 60 kts, ying with one door removed is approved
without changes to the limitations of the normal operational envelope.
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