Small Transport
Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 100; Flight Crew Total 3510; Flight Crew Type 15
Distraction; Situational Awareness; Confusion; Communication Breakdown
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Flight Crew Returned To Clearance
Airspace Structure; Chart Or Publication; Human Factors
During our initial call to Midway clearance; we were assigned the following route for weather upon which it was read back and spelled to the controller:MIDWAY.2 ACETO ADELL ARLYN STL...ETCOn departure; we were assigned a heading from Chicago departure and then asked to proceed to ACETO..upon completion of the turn we were told we weren't proceeding toward the correct fix. We then clarified the fix with the similar spelling of another fix ACITO.
Instructor pilot reported confusion with a similar fix name that caused the flight to be off course.