Narrative:

On departure climb my departure procedure (dp) accidentally was cleared from the GPS/mfd. Having departed teb in the past; I had always been given immediate vectors to elvae (which I did have still active in the GPS) so I was not immediately concerned. I was contacted by ATC to follow the dp which was no longer in my flight plan-they proceeded to give me a heading and altitude to which I immediately complied. I am still not quite sure how the dp was deleted; however; I have realized that I should also load the chart for the dp on my charts page of the mfd which would have given me immediate reference to the procedure.the event occurred in VMC; I was fully in control of the aircraft and at no time was I at risk. I fly into and out of teterboro often and want to be certain this does not occur again. I have taken corrective procedural action to ensure it does not. On departure I will always load the dp into the flight plan; load the chart into the charts page; have the chart active on the ipad and have my heading bug and altitude indicator set on the appropriate numbers for the first phase of the dp. I have run this scenario through my head numerous times as it was disconcerting to err in such a busy flight environment.I plan on pursuing my CFI in the spring of 2013 and feel that although this was a failure on my part; much was gained and learned. I should have immediately asked ATC for vectors when I realized the flight plan was missing the dp and appreciate ATC's immediate vectors when they recognized my deviation. Obviously all of the above-mentioned back up systems will greatly improve safety and compliance.

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Original NASA ASRS Text

Title: The pilot of a Cessna 350 suffered a track deviation departing TEB when she either failed to load the departure procedure in the GPS/MFD or had inadvertently deleted it. ATC provided vectors to resolve the error.

Narrative: On departure climb my Departure Procedure (DP) accidentally was cleared from the GPS/MFD. Having departed TEB in the past; I had always been given immediate vectors to ELVAE (which I did have still active in the GPS) so I was not immediately concerned. I was contacted by ATC to follow the DP which was no longer in my flight plan-they proceeded to give me a heading and altitude to which I immediately complied. I am still not quite sure how the DP was deleted; however; I have realized that I should also load the chart for the DP on my charts page of the MFD which would have given me immediate reference to the procedure.The event occurred in VMC; I was fully in control of the aircraft and at no time was I at risk. I fly into and out of Teterboro often and want to be certain this does not occur again. I have taken corrective procedural action to ensure it does not. On departure I will always load the DP into the flight plan; load the chart into the charts page; have the chart active on the iPad and have my heading bug and altitude indicator set on the appropriate numbers for the first phase of the DP. I have run this scenario through my head numerous times as it was disconcerting to err in such a busy flight environment.I plan on pursuing my CFI in the spring of 2013 and feel that although this was a failure on my part; much was gained and learned. I should have immediately asked ATC for vectors when I realized the flight plan was missing the DP and appreciate ATC's immediate vectors when they recognized my deviation. Obviously all of the above-mentioned back up systems will greatly improve safety and compliance.

Data retrieved from NASA's ASRS site as of July 2013 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.