What was found
PILOTS REPORTED THAT AIRCRAFT STEERING WAS INOPERATIVE. MAINTENANCE FOUND THE STEERING RACK HAD CRACKED AT THE FIRST TOOTH SERRATION. THE STEERING RACK WAS REPLACED. RACK CRACKED IN AN AREA THAT IS SUBJECTED TO RECURRENT MAGNETIC PARTICLE INSPECTIONS EVERY 1,600 HOURS AS DIRECTED BY FOKKER SIP 32-00-00 AND DOWTY SB 32-14B. PART TSN WAS 5,892 CYCLES. TIME SINCE LAST MAGNETIC PARTICLE INSPECTION FOR C/W FOKKER SIP 32-00-00 WAS 1,200 CYCLES AGO. NO DEFECTS WERE NOTED AT THE INSPECTION. (X)