SDR ASM2002F00006

Service difficulty report · Indicator · Doug DC987

Difficulty date: May 20, 2002
Submitted: June 27, 2002
Operation: Air carrier
Aircraft: N205AM
Make and model: Doug DC987
Aircraft serial: 49405
System (JASC): 3420 · Attitude and Direction Data System
Part: Indicator
Condition: Inaccurate
Location: Cockpit
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

AIRCRAFT RETURN TO FLIGHT AS A CONSEQUENCE OF 60 DEGREE DIFFERENCE ON LEFT HEADING OR AUXILIARY AHRS, DIFFERENCE COULD NOT BE CORRECTED. AHRS ELECTRICAL CONNECTOR WAS CLEANED AND AHRS NR 1 WAS INTERCHANGED WITH AHRS NR 3, TESTS PERFORMED IAW MM.

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