Note however that from 30 January 1922, mail from British Indian post offices in Abadan and Ahwaz had been flown on the Baghdad – Cairo service. 1 August 1922 The newspaper “Iran” reports that two British military aircraft landed in Tehran having flown from Baghdad. They landed at Qala-e-Marghi, referred to as a “chicken castle” or “fortress of the birds”, which had been levelled by prisoners under police supervision to ensure the safe landing of the British aircraft. 7 August 1922 6 February 1922 Junkers and the Soviet Government signed an agreement which allowed Junkers to set up an aircraft manufacturing facility in Fili near Moscow, and led to the formation of Junkers Luftverkehr Russland. 5 May 1922 End of Bauverbot. <Smart, undated> 26 November 1922 Further contract agreed enabling Junkers Luftverkehr Russland to organise air routes over Soviet territory to connect with Persia, Afghanistan, Finland, and Sweden. The proposed route to be operated by Junkers Luftverkehr Russland was Stockholm – Helsingfors – Petersburg – Moscow – Charkov – Rostov – Mineralnivodi - Grosny – Baku – Enzeli – Teheran. This route, however, never came into operation. 12 December 1922 The Council of People's Commissars formally approved the Fili contract by which Junkers agreed to produce engines and 300 metal airplanes per year, some of which would be sold to the Soviet Defence Commissariat.
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