What was found
DFW - FLT 3538 - ELEVATOR TAIL FLUTTER AT 300KTS AND ABOVE, BETWEEN 10,000 AND 20,000. ALSO IN DESCENT SLOWING THROUGH 250 KTS. REPLACED UPPER AND LOWER RUDDER 1 ATTACHMENT HINGES, RIGHT HORIZONTAL STABILIZER TIP. COMPLETED ALL PARTS OF EO EM-55AD-207R4. ADJUSTED RUDDER DEFLECTION ECCENTRIC PIN TO ZERO POSITION ALONG WITH VIBRATION WORK CARD. FITTING P/N 120-38377-001, STABILIZER TIP P/N 145-35900-404, SPACER P/N 145-25626-001, BUSHING P/N 120-33582-005. AIRCRAFT RETURNED TO SERVICE. (M)