Similar in many respects to the Aldershot, the 561 Andover was produced to fly the RAF's Cairo-Baghdad air service. Accommodation was for 12 passengers, or stretchers as an air ambulance. Only three built. A commercial version, produced as the 563, was the first Avro aircraft to be produced specially for airline service on main routes. Only one built. This was subsequently operated by Imperial Airways on its cross-Channel services. Both versions powered by one 485kW Rolls-Royce Condor III engine.
|A three-view drawing (800 x 729)|
| MODEL||Avro 561|
| ENGINE||1 x 650hp Rolls-Royce Condor III|
| Take-off weight||5221 kg||11510 lb|
| Empty weight||3169 kg||6986 lb|
| Wingspan||20.73 m||68 ft 0 in|
| Length||15.62 m||51 ft 3 in|
| Height||4.65 m||15 ft 3 in|
| Wing area||98.66 m2||1061.97 sq ft|
| Max. speed||177 km/h||110 mph|
| Ceiling||4115 m||13500 ft|
| Range||741 km||460 miles|
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