The data on this page is gathered from the factory published owners manual and are deemed to be correct.
However, it is the pilot’s sole responsibility to verify and fly the a/c within the limits of factory-published information.
| Weight and Balance | |
|---|---|
| Empty Weight | 886 lbs. |
| Maximum Weight | 1279 lbs. |
| Maximum Useful Load | 393 lbs. |
| Minimum front seat load for all flights* | 154* lbs. |
| Maximum Front Seat Load | 242 lbs. |
| Maximum Rear Seat Load | 242 lbs. |
| Maximum Baggage Compartment Load | 22 lbs. |
Trim Weights must be installed if front seat load is less than 154 lbs.
| Front Seat Pilot Weight | 121-137 lbs | 138-153 lbs |
| Number of Trim Weights | 2 | 1 |
| Air Speeds | ||
|---|---|---|
| Maximum Speed calm air | Vne | 135 Kts |
| Maximum Speed to Deploy Spoilers | V | 135 Kts |
| Maneuvering Speed | Va | 92 Kts |
| Maximum Aerotow Speed | Vt | 92 Kts |
| Minimum recommended approach speed | Vref | 51 Kts |
| Maximum crosswind component | V | 11 Kts |
| Stall Speeds | Without Dive Brakes | With Divebrakes |
| Solo | 36 Kts | 40 Kts |
| Dual | 40 Kts | 46 Kts |
Flying in rain raises stall speeds by 6 Kts. With wet wings increase take-off and approach speeds accordingly.
True airspeed is greater than indicated at altitude. Vne decreases according to the following table.
| Vne | |||||
|---|---|---|---|---|---|
| Altitude | 0-10,000′ | 13,000′ | 16,000′ | 19,000′ | |
| Vne | 135 Kts | 121 Kts | 115 Kts | 109 Kts | |
| Performance | ||
|---|---|---|
| Speeds to Fly | Solo | Dual |
| Minimum Sink | 43 Kts | 46 Kts |
| Best L/D ~36/1 | 51 Kts | 57 Kts |
Glider N4446Y Documents
G-103 Checklist
N4446Y Loading Graph
2011 N4446Y Weight and Balance
Glider Manuals
N4446Y USA Twin II Flight Manual
N4446Y USA Twin II Maintenance Manual
N4446Y USA Twin II Repair Instructions
2014 TDSC G39EU
Equipment Manuals
Transponder ATC4401-1 Installation and Operation
FSG60M User manual
FSG70M Squelch Adjustment
LX Navigation LX16 Variometer Pilots Manual
Winter 6FMS423 Airspeed Indicator Information
Winter STV-5 Variometer Installation Manual