Narrative:

[It was reported that our flight had a heading deviation that caused a loss of separation with another aircraft that departed from the parallel runway.] from my perspective this flight departed under normal conditions without incident. I was unaware that our aircraft's trajectory was not in compliance with the published departure procedure. As the pilot monitoring I maintained adequate situational awareness; the heading being flown was in compliance with the departure procedure (heading 251). I was not aware that our aircraft was experiencing wind drift; additionally; ATC did not issue our flight a vector to correct for this drift. The TCAS system did not indicate a loss of separation with the B737 in question. From my perspective this flight departure normally.I was unaware that this event had occurred until I was notified by the [safety] manager. The captain pilot flying (PF) provided an adequate departure briefing; to include the appropriate levels of automation required to comply with the [departure procedure]. The possibility of excessive wind drift leading to a loss of lateral separation was not a known threat to this departure procedure. As such; a mitigation strategy was not formulated to prevent this event from occurring. Additionally; it is impossible to detect this drift from the flight deck- the information available to us does not indicate an 8 degree course deflection.

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Original NASA ASRS Text

Title: CRJ200 First Officer reported being informed after the fact that his flight did not fly the required heading for the departure after takeoff. This caused a loss of separation with a B737 departing on a parallel runway and was identified by an automatic reporting system.

Narrative: [It was reported that our flight had a heading deviation that caused a loss of separation with another aircraft that departed from the parallel runway.] From my perspective this flight departed under normal conditions without incident. I was unaware that our aircraft's trajectory was not in compliance with the published Departure Procedure. As the Pilot Monitoring I maintained adequate situational awareness; the heading being flown was in compliance with the Departure Procedure (heading 251). I was not aware that our aircraft was experiencing wind drift; additionally; ATC did not issue our flight a vector to correct for this drift. The TCAS system did not indicate a loss of separation with the B737 in question. From my perspective this flight departure normally.I was unaware that this event had occurred until I was notified by the [safety] manager. The Captain Pilot Flying (PF) provided an adequate departure briefing; to include the appropriate levels of automation required to comply with the [departure procedure]. The possibility of excessive wind drift leading to a loss of lateral separation was not a known threat to this departure procedure. As such; a mitigation strategy was not formulated to prevent this event from occurring. Additionally; it is impossible to detect this drift from the flight deck- the information available to us does not indicate an 8 degree course deflection.

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.