As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NA**SDR FILED OPEN** **ATB** AFTER RETRACTING GEAR WE HEARD A NOISE THAT SOUNDED LIKE AN ELEVATOR SURGE OR SWEEP OF POWER THIS HAPPENED SEVERAL TIMES EACH TIME IN OCCRRED SEVERAL OF THE CAPTAINS INSTRUMENTS SHOWED FAILED THIS HAPPENED EVERY 30-60 ( CONTINUED ). DEFERRED #1 ENGINE IDG PER MEL 24-11-01-1 ACCOMPLISHED DMP 24-11-01-1 M 773663.