Service difficulty report · Adc · Doug DC982

Difficulty date
December 27, 2015
Submitted
December 29, 2015
Operation
Air carrier
Aircraft
N488AA
Make and model
Doug DC982
Aircraft serial
49681
Aircraft time
77,248 hours, 40,842 cycles
Part
Adc
Part number
HG280D80
Part serial
91032586
Condition
Faulty
Location
Zone 100
Part time
18,549 hours, 9,924 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GNDED. EMER DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING CRUISE 30,000 AUTOPILOT & AUTO THROTTLE DISCONNECTED. CAPTAIN HAD FAST & SLOW FAIL LIGHT ON MACH TRIM INOPERATIVE & UNRELIABLE AIRSPEED. R & R NR 1 AIR DATA COMPUTER IAW AMM 34-16-01. PERFORMED OPERATIONAL TEST IAW AMM 22-01-05. SYS CHECKED NORMAL.

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