Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 30; Flight Crew Total 1500; Flight Crew Type 1000
Aircraft Equipment Problem Less Severe; Deviation - Altitude Overshoot; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Flight Crew Returned To Clearance
Human Factors
Standard Instrument Departure assigned (FLL6.THNDR) with Radar vectors assumed. GNS-430W (Garmin panel mounted; IFR certified GPS unit) normally has all departure procedures and even though the database is up to date; there were no departure procedures available to select for FXE. Therefore the procedure had to be hand coded into the unit. During this hand coding; the THNDR intersection was accidentally coded as THUND.During initial climb out and 180 degree turn; despite checking and setting the directional gyro on takeoff; the gyro precessed by 25 degrees. This was caught by controllers who were verifying the heading and asking for adjustments. Upon request to join the THNDR transition; instead intercepted route to THUND which was 6 miles east of course causing additional calls from controllers to check course. Since this was during the climb phase; while sorting out the navigational coding issue; pilot overshot assigned altitude by 400 feet before noticing the overshoot and correcting altitude; navigation and heading. There were no issues with other traffic.Any change in normal operating procedures; especially when hand coding detailed routing information at a critical initial phase of flight should be double checked for accuracy prior to departure. Having utilized the VOR radial and iPad as a cross check for the GPS would have been another method to have caught the error before the controllers.
GA pilot reported a deviation on the FLL 6 departure due to a gyro precession and incorrectly coded intersection.