According to Al-Jazeera and Al-Arabiya TV channels, militants took control over the Taftanaz airfield, which hosted up to 60 helicopters.
Damascus has denied these reports. The state-run SANA news agency alleges that troops repelled the attack and caused severe damage to rebels’ live and technical force, making them flee the base.
Rebels overran Friday morning Taftanaz airbase, the largest in northern Syria, after several days of fierce combat, the Syrian Observatory for Human Rights said.
"The fighting at Taftanaz military airport ended at 11:00 am (0900 GMT) and the base is entirely in rebel hands," said Observatory director Rami Abdel Rahman.
"Many regime forces have been killed and most of the soldiers and officers fled at dawn," he said by phone.
Voice of Russia, TASS, AFP