# SDR RRXA010031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2001
- Submitted: April 12, 2001
- Operation: Air carrier
- Aircraft: [N605AL](https://openairdocs.org/aircraft/N605AL), registered now
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46106
- Aircraft time: 90,512 hours, 22,621 cycles
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Indicator
- Part number: 8DJ324WAC1
- Part serial: W0091A
- Condition: Faulty
- Location: Cockpit
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RRXA010031

## Discrepancy

NR 4 ENGINE DURING SPOOL UP, N1 RPM INDICATOR HANGS UP BETWEEN 50 TO 70 PERCENT.  REMOVED AND REPLACED NR 4 N1 INDICATOR IAW DC-8 MM CH 77-00.  OPS CHECKS GOOD ON ENGINE RUN-UP.

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