| Technical data | |
|---|---|
| Type | AIR-4 |
| Function | trainer |
| Year | 1930 |
| Crew | 2 |
| Engines | 1*60hp 'Walter' |
| Length | 7.1m |
| Wingspan | 11.0m |
| Wing area | 16.5m2 |
| Empty weight | 395kg |
| Loaded weight | 630kg |
| Wing Load (kg/m2) | 38.0 |
| Power load (kg/hp) | 10.5 |
| Maximum Speed at 0m | 150km/h |
| Landing Speed | 66km/h |
| Flight Endurance | 4h |
| Range | 500km |
| Ceiling | 4000m |
| Climb | |
| 1000m | 6.0min |
| 3000m | 30.0min |
AIR-4, Ya-4, A.S.Yakovlev
;)
|
Mistaken for AIR-3.
AIR-3 with redesigned landing gear, providing wider gear base. Flying characteristics were almost identical to those of the predecessor.
|
| Predecessor(s) | Modification(s) |
|---|---|
 AIR-3 Ya-3 |
AIR-8 Ya-8 |
References:
- "History of aircraft construction in the USSR", Vol.1 p.429;
