What was found
DURING CLIMB THRU FL 180 THE STBY ALTIMETER SELECT KNOB BROKE, KNOB WILL ONLY ROTATE COUNTER CLOCKWISE. EMERGENCY DECLARED. A/C RETURNED TO ATL AFTER T/O.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB THRU FL 180 THE STBY ALTIMETER SELECT KNOB BROKE, KNOB WILL ONLY ROTATE COUNTER CLOCKWISE. EMERGENCY DECLARED. A/C RETURNED TO ATL AFTER T/O.