# SDR DHL2001801002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2001
- Submitted: February 27, 2001
- Operation: Air carrier
- Aircraft: N801DH
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46033
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Adi
- Part number: 2587909903
- Part serial: 0023370
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2001801002

## Discrepancy

F/O ADI BANKS 1/4 OF CAPTAINS AND DURING TURNS HORIZON FLAG ILLUMINATED.  F/O HSI HAS OFF FLAG AND DRIFTS FROM CAPTAIN''S HSI.  REMOVED AND REPLACED F/O''S ADI.  OPS CHECKED OK IAW M/M 34-20-0 AND LITTON LTR-97 SUP M/M 34-20-25.  RERACKED HSI INDICATOR AND COULD NOT DUPLICATE PROBLEM.  SWAPPED NR 1 AND NR 2 HSI FOR FURTHER TROUBLESHOOTING.  OPS CHECK OK IAW M/M 34-21-0 AND LITTON LTR-97.

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