Narrative:

Following take off from 15; at 400 feet; I called for navigation mode as we were flying the HORTO2 RNAV departure. The first officer (first officer) selected navigation and confirmed 'FMS.' I happened to look down at the CDI and saw the head of the needle pointing toward horto which was behind us! My first reaction was we didn't have the proper runway selected. The first officer checked the FMS and said it showed 15. The mfd showed the proper ground track. I expected the next fix to be capvc. Having briefed this at the gate; I knew a right turn was required at 515 feet; so I started a right turn. Then; the FMS 'caught up' with us. I've never seen this on any FMS before. After returning to dca; we were able to depart 15 again. The second time; the FMS worked properly.not sure what the cause was. We did have some ACARS issues enroute which seemed due to the ACARS-FMS keypad interface. I don't know if those are somehow related.

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Original NASA ASRS Text

Title: CRJ200 flight crew reported departing Runway 15 at DCA on the HORTO2 RNAV with Runway 19 selected in the FMC. The Captain turned late at 515 feet while the First Officer corrected the FMC.

Narrative: Following take off from 15; at 400 feet; I called for NAV mode as we were flying the HORTO2 RNAV departure. The First Officer (FO) selected NAV and confirmed 'FMS.' I happened to look down at the CDI and saw the head of the needle pointing toward HORTO which was behind us! My first reaction was we didn't have the proper runway selected. The FO checked the FMS and said it showed 15. The MFD showed the proper ground track. I expected the next fix to be CAPVC. Having briefed this at the gate; I knew a right turn was required at 515 feet; so I started a right turn. Then; the FMS 'caught up' with us. I've never seen this on any FMS before. After returning to DCA; we were able to depart 15 again. The second time; the FMS worked properly.Not sure what the cause was. We did have some ACARS issues enroute which seemed due to the ACARS-FMS keypad interface. I don't know if those are somehow related.

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.