Date: 201911
Local time of day: 1201-1800
Location: ZZZ.TRACON, US
Flight conditions: VMC
Aircraft: PC-12
Operator: Air Carrier
Operating under: Part 91
Flight plan: IFR
Mission: Ferry / Re-Positioning
Flight phase: Climb
Airspace: Class D ZZZ
ATC / advisory: TRACON ZZZ
Reporter organization: Air Carrier
Reporter function: Pilot Not Flying; Captain
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Human factors: Communication Breakdown; Human-Machine Interface
Second reporter function: First Officer; Pilot Flying
Anomaly: Deviation - Altitude Overshoot; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Detector: Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Clearance
Contributing factors: Procedure; Airspace Structure
Primary problem: Airspace Structure

Narrative: We received a clearance from ATC to ZZZ for an empty reposition that included the point 'HOMEE'. When ATC read the clearance the point sounded like 'HONEE' which is also a valid waypoint and was read back to ATC who stated 'read back correct'. The point was programmed into the FMS and we departed. I was Pilot Monitoring and my First Officer was Pilot Flying. TRACON told us to proceed direct to what sounded like 'HONEE' so we did and turned left to follow the course. ATC inquired why we were turning left and that we should be turning right to 'HONEE'. I told him were turning left to go to 'HONEE' and I asked him to spell it and he spelled 'HOMEE' I saw the problem and asked for an amended clearance for the left turn and he gave us a left turn to 140 degrees. While troubleshooting I noticed that we had drifted almost 200 ft. high from our assigned altitude of 2;000 ft. I took immediate action to correct the altitude and once recovered I corrected the FMS and we were re-cleared direct 'HOMEE' and then we continued the flight without incident.


Second narrative: We received a clearance from ATC to ZZZ for an empty reposition that included the point 'HOMEE'. When ATC read the clearance the point sounded like 'HONEE' which is also a valid waypoint and was read back to ATC who stated 'read back correct'. The point was programmed into the FMS and we departed. I was Pilot Flying and my Captain was Pilot Monitoring. TRACON told us to proceed direct to what sounded like 'HONEE' so we did and turned left to follow the course. ATC inquired why we were turning left and that we should be turning right to 'HONEE'. My Captain told him were turning left to go to 'HONEE' and asked him to spell it and he spelled 'HOMEE' My Captain saw the problem and asked for an amended clearance for the left turn and he gave us a left turn to 140 degrees. While troubleshooting my Captain noticed that we had drifted almost 200 ft. high from our assigned altitude of 2;000 ft. My Captain took immediate action to help me correct the altitude and once recovered we corrected the FMS and we were re-cleared direct 'HOMEE' and then we continued the flight without incident.


Synopsis: PC12 flight crew reported that confusion over similar sounding waypoints resulted in a clearance deviation.