S-76/S-76 Mark II
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Flight Engineer
Flight Crew Last 90 Days 14; Flight Crew Total 12000; Flight Crew Type 14
Distraction; Human-Machine Interface
Aircraft Equipment Problem Less Severe; Airspace Violation All Types; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Speed All Types; Deviation / Discrepancy - Procedural FAR
Flight Crew Returned To Clearance
Aircraft; Human Factors
While in cruise flight; aircraft on autopilot; LNAV; my head was down programing the GPS when I observed the airspeed low; I cross checked my power and observed the autopilot had initiated an uncommanded climb. Possible that I unintentionally entered Class B.
S76 pilot reports a possible Class B incursion due to an uncommanded climb by the autopilot while the reporter was focused on the GPS.