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- PTO-4 abstract "The PTO-4 was an Estonian-designed military training aircraft of World War II.In 1938, the Estonian aviation engineers Voldemar Post, Rein Tooma and Otto Org, previously responsible for the PON-1 trainer, designed and built the PTO-4 training aircraft. It was a two-seat low-winged monoplane powered by a De Havilland Gypsy of 120 hp, with a fixed undercarriage that could be fitted with wheels or skis.[citation needed] The aircraft could fly at a maximum speed of 245 km per hour and had a ceiling of 5,000 meters.[citation needed] On 12 October 1938, the PTO-4 was taken into service of the Air Force.[citation needed]The Estonian Air Force received two PTO-4s (serial numbers 161 and 162), one with an open cockpit and the other an enclosed cockpit. Six examples were in civil use,[citation needed] of which five were used by the Eesti Aeroklubi (EAK), a flying club controlled by the Estonian Military.Four examples surviving from the Soviet occupation of Estonia (1940-41) were operated by the German Luftwaffe, being operated by a unit manned by Estonian volunteers (initially called Sonderstaffel Buschmann and later 1./SAGr.127) based at Reval-Ülemiste airfield. They were operated as training and liaison aircraft as well for coastal patrol over the shores of the Baltic.".
- PTO-4 manufacturer Tallinn.
- PTO-4 numberBuilt "8".
- PTO-4 productionEndYear "1938".
- PTO-4 productionStartYear "1938".
- PTO-4 type Trainer_(aircraft).
- PTO-4 wikiPageExternalLink search%3Fq%3DPTO-4%2BEstonia%26hl%3Den%26sa%3DN%26start%3D10.
- PTO-4 wikiPageExternalLink ?id=1595&prod_id=66.
- PTO-4 wikiPageExternalLink str033.htm.
- PTO-4 wikiPageID "3481519".
- PTO-4 wikiPageRevisionID "561933965".
- PTO-4 designer "Voldemar Post, Richard Tooma and Otto Org".
- PTO-4 hasPhotoCollection PTO-4.
- PTO-4 introduced "1938".
- PTO-4 lists "* List of Interwar military aircraft".
- PTO-4 manufacturer "Aviotöökoda, Tallinn".
- PTO-4 numberBuilt "8".
- PTO-4 primaryUser Estonian_Air_Force.
- PTO-4 primaryUser Luftwaffe.
- PTO-4 produced "1938".
- PTO-4 related "*PON-1 *PON-2 *PN-3".
- PTO-4 retired "1944".
- PTO-4 type Trainer_(aircraft).
- PTO-4 subject Category:Aviation_in_Estonia.
- PTO-4 subject Category:Military_equipment_of_Estonia.
- PTO-4 subject Category:World_War_II_trainer_aircraft.
- PTO-4 type Aircraft.
- PTO-4 type MeanOfTransportation.
- PTO-4 type Product.
- PTO-4 type Model_airplane.
- PTO-4 type DesignedArtifact.
- PTO-4 comment "The PTO-4 was an Estonian-designed military training aircraft of World War II.In 1938, the Estonian aviation engineers Voldemar Post, Rein Tooma and Otto Org, previously responsible for the PON-1 trainer, designed and built the PTO-4 training aircraft.".
- PTO-4 label "PTO-4".
- PTO-4 label "PTO-4".
- PTO-4 sameAs m.09ftkd.
- PTO-4 sameAs Q3178649.
- PTO-4 sameAs Q3178649.
- PTO-4 wasDerivedFrom PTO-4?oldid=561933965.
- PTO-4 isPrimaryTopicOf PTO-4.