Service difficulty report · Computer · Doug MD88

Difficulty date
January 17, 2005
Submitted
January 18, 2005
Operation
Air carrier
Aircraft
N160PL
Make and model
Doug MD88
Aircraft serial
49763
Aircraft time
44,214 hours, 30,904 cycles
Engine
Pwa JT8D219
Part
Computer
Part number
4034241974
Part serial
86071098
Condition
Failed
Location
Lt Side
Part time
6,118 hours, 3,909 cycles
Stage of operation
TO
How discovered
O
Nature of condition
G, E
Precautionary procedure
C

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

What was found

CAPTAIN REPORTED DFGC MISC DATA FAIL LEGEND ON BOTH MCDUS SCRATCH PADS, AUTOMATIC PILOT 1 AND 2 WERE UNABLE DURING FIVE MINUTES AFTER TAKEOFF, ATS WAS UNABLE WITH FMAS IN TAKEOFF MODE, CAPTAIN VHF NAV OSCILLATING, CRUISE INDICATOR WITHOUT MOVEMENT IN ND SCREEN AND STRONGER VIBRATION IN NOSE LANDING GEAR. STP WAS CHECKED DETECTING FAILURE CODES RELATED TO DFGC NR 1. DURING OVERNIGHT SERVICE, IT WAS PERFORMED BITE TO CADC´S AND DFGC NR 1 WAS REPLACED, AUTOMATIC PILOT SYSTEM, CRS VALUES AND WIRING WERE CHECKED, LT EPR'S TRANSMITTER WIRING WAS CHECKED, BITE TO BOTH CADC´S AND ATS WERE PERFORMED, RELAY R2-47 WAS REPLACED AND NOSE LANDING GEAR WAS SERVICED, ALL TESTS WERE CORRECT.

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