SDR ZW0A0107802

Service difficulty report · Gyro · Doug DC931

Difficulty date: August 30, 2001
Submitted: August 31, 2001
Operation: Air carrier
Aircraft: N979Z
Make and model: Doug DC931
Aircraft serial: 47343
Aircraft time: 77,292 hours, 88,215 cycles
System (JASC): 3422 · Directional Gyro and Indicating System
Part: Gyro
Part number: 25883024
Condition: Failed
Location: Cockpit
Stage of operation: CL
How discovered: O
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

ON TAKEOFF BOTH COMPASS CARDS SPUN RAPIDLY. NO FLAGS PRESENT. BOTH SYSTEMS DISAGREED WITH THE STANDBY/WET COMPASS. RETURNED TO STL. REPLACED THE NR 1 DG PN 2588302-4, THE NR 2 FLUX VALVE PN 2587794, AND THE NR 2 COMPASS RACK PN 614937-101. CHECK-C 12-3-00 STL.

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