hedgehopper, I seem to recall that there was a media report about this a week or so back, which led with the helicopter going down.
Lonewolf_50 is correct. The following is from an article that was published on the Voice of America website on September 20, 2012:
"Syrian state television says a military helicopter that crashed near Damascus clipped the tail of a Syrian passenger plane in midair. The report said the passenger jet landed safely Thursday at Damascus International Airport with 200 people onboard."
"Opposition activists said rebels shot down the helicopter. Fighters opposed to Syrian President Bashar al-Assad have claimed to have downed military helicopters before, including late last month in Damascus."
"The Syrian state report did not include eye witnesses to the alleged incident."