Aviation authorities have said the Yakovlev was air-worthy and had logged fewer than 11,000 hours of flight time in its 22 years. The pilot, co-pilot and three of the crew were Armenian nationals, and experts from both Armenia and Russia are assisting in the crash investigation. Iran's civil aviation authorities recently announced plans to outlaw foreign pilots on Iranian planes, although Iran leases many aircraft from other nations to fill the gaps in its air transport system. Tehran cannot buy new US-made Boeings, older versions of which were acquired before the 1979 Islamic revolution and now make up the majority of Iran's air fleet, because of unilateral sanctions imposed by Washington. Iran calls for emergency meeting of OIC .
Supreme leader condemns reprisals on Afghanistan .
Khatami says UN should lead fight against terrorism . Taliban envoy . Iran says worried about influx of Afghan refugees . Iran cautions Britain over hasty US reaction to terrorist attacks . Afghan population movements high as fear builds of US strikes, UN warns .