Do Merkur D-529
Dornier Merkur
Type Do B-Bal Merkur I   2 + 6 seat airliner used also as ambulance, cargo and surveying aircraft ( Do B-Bel) Do B-Bal 2 Merkur II   2 + 6 seat airliner Do B-Jal Do B-Is CH 171 Floatplane used for a record flight from Zürich to Cape Town
Engine 1 BMW VI 1 BMW VI U 1 Junkers L 55 1 BMW VI
Dimensions Length 12.5 m, height 3.5 m, span 19.6 m, wing area 62.0 m2. Passenger cabin : Length 3.05 m, height 1.72 m, width 1.45 m Length 12.9 m, height 3.6 m, span 19.6 m, wing area 62.0 m2. Passenger cabin : Length 3.05 m, height 1.72 m, width 1.45 m Length 13.3 m, height 4.7  m, span 19.6 m
Weights Empty 2219kg,fuel 410 kg, oil 54 kg,  flying weight 3384 kg Empty 2780 kg, fuel 300 kg, oil 30 kg, flying weight 4100 kg Empty 2570 kg,  flying weight 3600 kg
Performance Max. speed 190 km/hat sea level, cruising speed 160 km/h at sea level, service ceiling 5200 m, climb to 3000 m 19 - 23 min., range 700 km, landing speed 95 km/h, endurance 4.3 h Max. speed 192 km/h, service ceiling 4000 m, climb to 2000 m 15.6 min., Max. speed 182 km/h at sea level, cruising speed 150 km/h at sea level, climb to 3000 m 28 min.,  service ceiling 4800 m, range 450 km, landing speed 95 km/h