What was found
PILOT REPORTED RT T/R CONTROL PEDAL HIT FULL STOP DURING RT DESCENDING TURN. HELICOPTER COULD NOT BE TRIMMED. DESCENT WAS SHALLOWED AND TRIM WAS ACHIEVED. MECH PERFORMED T/R RIGGING CHECK AND FOUND THE FOLLOWING: FULL LT PEDAL READING ON T/R BLADES = 24.5 DEGREES; LIMIT PER MFG MM IS 21 DEGREES 10'. FULL RT PEDAL READING WAS -4.75 DEGREES; LIMIT IS A REFERENCE OF -7 DEGREES. INVEST REVEALED THE T/R SHORT PITCH LINKS P/N 109-0133-04-101 HAD BEEN REPLACED BY AGUSTA AEROSPACE CORP WITH P/N 109-0133-04-105 LINKS. NO RIGGING CHECK WAS CALLED FOR IN THE MM AND NONE WAS PERFORMED. P/N 109-0133-04-105 LINKS ARE 3 MM SHORTER THAN -101 LINKS.