B767 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Engineer
Flight Crew Last 90 Days 270; Flight Crew Total 23000; Flight Crew Type 5000
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Overcame Equipment Problem; Flight Crew Returned To Clearance
Aircraft; Environment - Non Weather Related
During initial climb from Runway 36C in CLT; Captain; [pilot] flying; encountered wake turbulence from previously departed Airbus. Captain maintained wings-level; proper climb attitude. Normal call-outs and climb procedures were used in a timely manner. After engaging autopilot at 1000 feet; aircraft turned to an intercept heading of about 280 degrees (45 degree intercept angle) to join departure routing on ANDYS SEVEN towards EBAWI. Instead of intercepting the departure course; the aircraft maintained heading and flew through the course. Captain intervened by disconnecting autopilot and turned northbound towards EBAWI intersection. I have seen the navigation system on these B-767's do this before. It appeared the nav system had already determined we would track past EBAWI intersection before intercepting the outbound course due to the 90 degree turn the aircraft would have to make towards EBAWI and our close proximity to EBAWI. Factors; I believe contributing to this happening: 1. Wake turbulence on initial climb and having to maintain wings level climb attitude till clear of wake turbulence. 2. Low level winds quickly increasing to 36 knots from the west at 1000 feet agl; pushing the aircraft further east. 3. Navigation system recalibrating aircraft position from ground-based navaids after lift-off. 4. Navigation system unable to anticipate early intercept turn to join course; while close to up-coming fix requiring turn back to the same direction as aircraft is currently heading. It appeared; but unsure; that the Flight Management System defaulted to Heading mode. 5. Charted departure procedure depicting initial departure fix 40 degrees 'off' runway heading; instead of having the fix straight out from runway.
B767 First Officer reported deviating from cleared track departing CLT on the ANDYS 7 SID when they encountered wake turbulence from preceding Airbus and the FMS failed to capture the course.