What was found
CAPTAIN REPORTS THAT HIS SEAT WILL NOT LOCK INTO POSITION. REQUESTED SPECIAL HANDLING FROM ATC. SUPPLEMENTAL DATA UPDATE SHOP HISTORY ON SEATS WITH THIS DISCREPANCY TEND TO INDICATE A CONTROL CABLE ADJUSTMENT PROBLEM. NO SHOP REPAIR RECORDS CAN BE FOUND FOR THIS PARTICULAR SEAT. THIS 20 YEARS OLD PLUS TECHNOLOGY AVERAGES ONLY 2 WRITE-UPS PER MONTH FOR THIS TYPE OF GRIPE. FLEET ENGINEERING CONSIDERS THIS AN ISOLATED INCIDENT. SEAT WAS REPLACED.