Waco A series
| Waco A series | |
|---|---|
   | |
| Waco PBA biplane of 1932 at the Historic Aircraft Restoration Museum near St Louis Missouri in 2006 showing the wide side-by-side seating layout | |
| Role | two-seat side-by-side biplane | 
| National origin | United States | 
| Manufacturer | Waco Aircraft Company | 
| Introduction | 1932 | 
| Status | a few examples still extant in 2009 | 
| Primary user | private owners | 
The Waco A series is a range of light American-built twin side-by-side seater sporting biplanes of the early 1930s.
Development
The Waco A series was introduced in 1932 as an affordable private-owner aircraft with cross-country range and baggage capacity and a more sporting image than the larger Waco F series. The A series offered a number of engine options which had varying sub-designations. The power range lay between the KBA with a 100 hp (75 kW) Kinner engine and the later UBA with a 210 hp (157 kW) Continental powerplant.[1]
The PLA "Sportsman" of 1933 introduced a longer wider fuselage and a higher useful load and had a 170 hp (127 kW) Jacobs LA-1 radial engine. The last model in the series was the ULA, also of 1933, with a 210 hp (157 kW) powerplant.[2]
Operational history
The A series was bought mainly by private pilot owners with a sporting inclination. Relatively few were produced and the type survives in small numbers in 2009. A PBA is on display in the Historic Aircraft Restoration Museum at Dauster Field near St Louis, Missouri.
Variants
Data from Aerofiles[3]
BA series
- BBA
 - 165 hp (123 kW) Wright J-5 - none produced
 - KBA
 - 100 hp (75 kW) Kinner K-5 - one built
 - IBA
 - 125 hp (93 kW) Kinner B-5 - three built including one conversion
 - PBA
 - 170 hp (130 kW) Jacobs LA-1 - six built
 - RBA
 - 110 hp (82 kW) later 125 hp (93 kW) Warner Scarab - 4 built
 - TBA
 - 160 hp (120 kW) Kinner R-5 - none built
 - UBA
 - 210 hp (160 kW) Continental R-670 - at least 6 built
 
CA series
- KCA
 - 100 hp (75 kW) Kinner K-5 - possibly none built
 - PCA
 - 170 hp (130 kW) Jacobs LA-1 - possibly none built
 - RCA
 - 110 hp (82 kW) Warner Scarab - possibly none built
 - TCA
 - 160 hp (120 kW) Kinner R-5 - none built
 - UCA
 - 210 hp (160 kW) Continental R-670 - none built
 
LA series
- PLA Sportsman
 - longer and wider fuselage and 170 hp (130 kW) Jacobs LA-1 - 4 built
 - ULA Sportsman
 - as PLA with 210 hp (160 kW) Continental R-670 - 1 built
 
Specifications (RBA variant)
Data from Green, 1965, p. 306
General characteristics
- Crew: one
 - Capacity: one passenger
 - Length: 21 ft 0 in (6.4 m)
 - Wingspan: 29 ft 6 in (8.84 m)
 - Height: 8 ft 8 in (2.44 m)
 - Empty weight: 1,250 lb (567 kg)
 - Gross weight: 1,949 lb (884 kg)
 - Powerplant: 1 × Warner Scarab , 125 hp (93 kW)
 
Performance
- Maximum speed: 104 mph (167 km/h, 90 kn)
 - Cruise speed: 91 mph (146 km/h, 79 kn)
 - Range: 400 mi (640 km, 350 nmi)
 - Service ceiling: 12,800 ft (3,900 m)
 - Rate of climb: 500 ft/min (2.5 m/s)
 
