SDR ASMF200504020

Service difficulty report · Cadc · Doug DC987

Difficulty date: April 23, 2005
Submitted: April 26, 2005
Operation: Air carrier
Aircraft: N803ML
Make and model: Doug DC987
Aircraft serial: 49726
Aircraft time: 42,826 hours, 25,076 cycles
System (JASC): 3417 · Air Data Computer
Part: Cadc
Part number: HG280D80
Part serial: 295
Condition: Failed
Location: Left Side
Part time: 12,465 hours, 8,044 cycles
Stage of operation: TX
How discovered: O
Nature of condition: J, G
Precautionary procedure: D

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

What was found

AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF ADC NR 1 FAILURE, AUTO SLATS FAIL LIGHT TURNED ON AND RIGHT EFIS LOST INFORMATION. TESTS WERE PERFORMED CONFIRMING THE FAILURES. ADC NR 1, LEFT STALL COMPUTER AND RIGHT AHRU WERE REPLACED IAW MM 34-16-01, 34-19-02 AND 34-21-10, ALL TESTS WERE CORRECT.

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