What was found
AFTER TAKEOFF WITH GEAR HANDLE IN OFF POS, FELT AND HEARD LOUD THUMP 4 OR 5 TIMES AT APPROX 2 MIN INTERVALS. PROBLEM WENT AWAY WITH HANDLE IN UP POSITION. RIGGED AND ADJUSTED NOSE GEAR DOORS PER MM, OPERATION NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF WITH GEAR HANDLE IN OFF POS, FELT AND HEARD LOUD THUMP 4 OR 5 TIMES AT APPROX 2 MIN INTERVALS. PROBLEM WENT AWAY WITH HANDLE IN UP POSITION. RIGGED AND ADJUSTED NOSE GEAR DOORS PER MM, OPERATION NORMAL.