What was found
RIGHT MLG LANDING GEAR EXTENSION: DURING FLIGHT AT 4000' 250 KIAS IN CONTINUOUS CHOP SPEED TAPE TURNED RED AND AUTO THROTTLES REDUCED TO 210 THREE TIMES DUE TO RIGHT GEAR MONENTARILY INDICATING NEITHER UP NOR DOWN. THERE WAS NO NOTICABLE INCREASE IN NOISE NOR FEELING OF THE GEAR MOVING IN THE WELL. AINED ACCESS AND REMOVED OLD SWITCH 1/A/W MODEL 680A MAINTENANCE MANUAL (REV 12) 32-32-25 (ORIGINAL ISSUE) MAIN GEAR UPLOCK SWITCH - REMOVAL/INSTALLATION AND INSTALLED ONE EACH NEW SWITCH P/N 6948101-3, NSN IAW MODEL 680A MAINTENANCE MANUAL (REV 12) 32-32-25 (ORIGINAL ISSUE) 1 MAIN GEAR UPLOCK SWITCH - REMOVAL/INSTALLATION. OPS CHECK GOOD