Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Flight Instructor
Flight Crew Last 90 Days 30; Flight Crew Total 8500; Flight Crew Type 1000
Distraction; Workload; Situational Awareness; Human-Machine Interface
Deviation - Speed All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Flight Crew Became Reoriented; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Aircraft
We departed from TEB on the TEB8 departure. After takeoff; I engaged the autopilot coupled to NAV to fly the SID. As the aircraft was leveling at 2;000 FT MSL; we both noticed the airplane was turning the wrong direction from the required turn and I engaged heading to arrest the turn. While I was busy with the heading control; the aircraft accelerated to approximately 220 KTS and since we were under the Class B airspace; I immediately powered to idle to slow the aircraft to 200 KTS and resumed the SID. The rest of the flight proceeded uneventfully.
The Reporter stated that the takeoff that day was to the north and the aircraft had not yet started the turn to the west when the tract deviation started. The Honeywell FMS had acted oddly on the several other flights this crew had with this same aircraft and the Reporter is uncertain why it turned the incorrect direction. The crew reviewed the programming at cruise and found the information was entered correctly for the departure they were on.
A CE560XL turned to an incorrect heading after the automation was engaged on the Runway 6 TEB 8 SID and while the Captain was correcting the track error the aircraft accelerated to 220 KTS.