N103CF

ATA 5340

Part: BRACKET — CRACKED (BS 2049) · airframe 8,606 hrs · 21,763 cycles

SEVERAL CRACKS HAVE BEEN FOUND ON AN AN BRACKET ATTACHED TO THE AIRCRAFT COCKPIT AND FUSELAGE. FIRST CRACK WAS ON THE LT JUST AFT OF THE GREENHOUSE WINDOW AT BS 2049.5, WL 1550-1400, LBL 125 AND MEASURED 3.5 INCHES. THE SECOND CRACK WAS LOCATED ON THE RT SIDE AT BS 2049.5, WL 1550-1400, RBL 150 AND MEASURED 6 INCHES. THE BRACKET WAS REMOVED TO INVESTIGATE FURTHER. UNDER THE REMOVED BRACKET IS AN ADDITIONAL L SHAPED BRACKET THAT ALSO HAD CRACKS LOCATED ON THE INSIDE OF THE COCKPIT. THE BRACKET WAS THEN PARTIALLY REMOVED TO INVESTIGATE CONDITION UNDERNEATH TO FINS ANOTHER CRACK ON THE FUSELAGE BULKHEAD RT SIDE AT BS 2049.5, WL 1550-1400, RBL 150. THIS CRACK HAS MEASURED 1.5 INCHES IN LENGTH.

ATA 7321

Part: FUEL CONTROL — MALFUNCTIONED (ENGINE) · airframe 4,218 hrs · 11,371 cycles

DURING CRUISE, PILOT FELT A VERY MILD VIBRATION AND NOTICED THE NR WAS 1 PERCENT LOW, PILOT THEN LOWERED THE COLLECTIVE TO MAKE A LT TURN FOR LANDING. THE NR DECREASED AS PILOT LOWERED THE COLLECTIVE TO THE POINT WHERE THE NR HORN SOUNDED AND THE VIBRATION GOT WORSE THEN SUBSIDED. THROTTLE WAS THEN PLACED IN MANUAL POSITION AND INCREASED THE NR INTO THE GREEN AND RAISED THE COLLECTIVE WITH NO NR DROP. COLLECTIVE WAS THEN LOWERED AND THE THROTTLE WAS MANIPULATED TO MAINTAIN NR FOR LANDING. AFTER LANDING NOTICED THE THROTTLE WAS WELL ABOVE THE FLT POSITION. RIGGING WAS VERIFIED ON THE RVDT, MECHANICAL GOVERNOR AND THE PC LINKS AND ALL WERE RIGGED PROPERLY, THE FCU WAS THEN CHANGED AND A OPERATION TEST FLIGHT WAS PERFORMED WITH NO FURTHER NR DROP.