Pilot reported flying towards an assigned heading only to be promptly queried and redirected by ATC.

Attributes
ACN	1709727
Time
Date	201912
Local Time Of Day	0601-1200
Place
Locale Reference	EWR.Airport
State Reference	NJ
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Person 1
Function	Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Climbing out of ewr on a heading of roughly 300 and around 10;000ft we were given instructions that I heard as 'climb to 13;000 and fly heading'. We continued the climb to 13;000 and started a left turn to 230. Shortly thereafter the controller says it should be a right turn to 320. I apologized and said I must have reversed the numbers but we would correct it and start turning back. He was polite and said something like 'oh maybe I gave you the wrong heading'. We had maybe turned half way to the incorrect heading.

Original NASA ASRS Text

Title: Pilot reported flying towards an assigned heading only to be promptly queried and redirected by ATC.

Narrative: Climbing out of EWR on a heading of roughly 300 and around 10;000ft we were given instructions that I heard as 'climb to 13;000 and fly heading'. We continued the climb to 13;000 and started a left turn to 230. Shortly thereafter the controller says it should be a RIGHT turn to 320. I apologized and said I must have reversed the numbers but we would correct it and start turning back. He was polite and said something like 'Oh maybe I gave you the wrong heading'. We had maybe turned half way to the incorrect heading.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.