# SDR ASMF200406013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 15, 2004
- Submitted: June 16, 2004
- Operation: Air carrier
- Aircraft: N803ML
- Make and model: Doug DC-9-87
- Registry model: [Doug DC-9-87](https://openairdocs.org/model/mcdonnell-douglas-dc-9-87) (OpenAirDocs)
- Aircraft serial: 49726
- Aircraft time: 40,161 hours, 23,347 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Gyro
- Part number: 4608000306
- Part serial: 1136
- Condition: Failed
- Location: Cockpit
- Part time: 7,488 hours, 5,114 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF200406013

## Discrepancy

CAPTAIN REPORTED THAT DURING FLIGHT UNTIL APPROACH, RDMI AND ND WITH DIFFERENCE BETWEEN 30-40 DEGREES.  DURING TRANSIT CHECK AT CUU, AHRU NR 1 WAS REPLACED IAW MM 34-21-10, TEST CORRECT.   AIRCRAFT WAS DISPATCHED AND RETURNED OF FLIGHT,  DFGC AND AHRU NR 2 FAILED AND FLIGHT DIRECTOR BUSES IN BOTH PFD´S AND FMA´S WITHOUT INFORMATION. AFTER LANDING, AHRU INFORMATION WAS RECOVERED, AHRU NR 2 WAS REPLACED, TEST CORRECT.  DURING OVERNIGHT SERVICE, DFGC TEST WAS PERFORMED IAW MM 22-01-05, ALL CORRECT.

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