What was found
STRAIGHT AND LEVEL FLIGHT AT 300KTS AND FL270 A/C REQUIRES 1-3/4 UNITS RT OF AILERON TRIM TO MAINTAIN STRAIGHT AND LEVEL FLIGHT. RDR TRIM VALVE AT LEFT 1/2 UNIT. ADJUSTED I/B T/E FLAPS PER LATERAL TRIM ADJUSTMENT CHART FIG 501, MM 27-00-21.