What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: DURINING CLIMB FLIGHT ATTENDENT REPORTED R1 DOOR HANDLE WAS NOT STOWED AND LOUD NOISE COMING FROM THE DOOR, SOME FLUCTUATIONS OF PRESSURIZATION NOTICED. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT DFW. ACCOMPLISHED R1 DOOR TORQUE TEST, PER APPLICABLE STEPS AMM 52-41-00 TORQUE TEST GOOD. ALSO ACCOMPLISHED PRESSURIZATION TEST, PER AMM 05-51-91 NO FLUCTUATION OR LEAKS NOTED. FOUND DOOR LINING SEAL INERFERANCE WITH BOTH UPPER AND LOWER LATCH RECEIVERS, CLEARED OBSTRUCTION.