Service difficulty report · Fiber Optic Gyro · Doug DC862

Difficulty date
January 26, 2007
Submitted
February 5, 2007
Operation
Air carrier
Aircraft
N799AL
Make and model
Doug DC862
Aircraft serial
45918
Aircraft time
79,529 hours, 24,513 cycles
Part
Fiber Optic Gyro
Condition
Precesses
Location
Nr 2
Part time
79,529 hours, 24,513 cycles
Stage of operation
CR
How discovered
V
Nature of condition
O
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

APPROXIMATELY 1.5 HOURS AFTER TAKEOFF FROM WSAP THE NR 2 COMPASS STARTED PROCESSING AT THE RATE OF 60° TO 70° PER HOUR, DG MODE PROCESSING AT THE RATE OF 25° PER HOUR. THE CREW ELECTED TO RETURN TO WASP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND AND CLEANED MOISTURE IN THE FIBER OPTIC GYRO CONNECTORS, WIRE BUNDLE BURNDY BLOCKS, BELOW GYROS AND LEFT FORWARD SIDE OF THE GYRO BAY. MAINTENANCE ALSO CLEANED MOISTURE FROM THE WIRE SPLICE CONNECTORS ON THE GYRO SYSTEM. THE OPERATIONAL CHECK WAS GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE.

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