Medium Large Transport; Low Wing; 2 Turbojet Eng
Communication Breakdown; Confusion; Workload
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Flight Crew Returned To Clearance
Procedure
When we received a takeoff clearance for 36C we were instructed 'cleared for takeoff fly runway heading'. Upon taking off and flying runway heading tower told us we should be turning to a 330 heading as it states on the departure procedure (ESTRR1). However according to the procedure we are to do a 330 or last assigned by ATC. We were last assigned runway heading so this is what we were doing.A simple miscommunication between flight crew and ATC.
A flight crew reported a deviation from a departure clearance due to a communication issue with ATC.