As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6153 - ABE-IAD - DURING CLIMB, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO STALL SHAKER SOUNDED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND ADJUSTED THE R1 AND R2 POTENTIOMETERS ON THE LT AND RT SIGNAL SUMMING UNITS, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)