# SDR ASAA2019080530320

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 5, 2019
- Submitted: August 6, 2019
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 19,471 hours, 6,307 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7410 · Ignition Power Supply](https://openairdocs.org/jasc/7410)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Rt Ignition
- Stage of operation: TX
- How discovered: V
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019080530320

## Discrepancy

DURING NR 1 ENGINE START,  USING RIGHT IGNITOR SELECTION,  NO ENGINE LIGHT LIGHT OFF.  USING LEFT IGNITOR SELECTION NR 1 ENGINE DID START NORMAL.  ACFT GROUNDED - YES.  INITIAL EVALUATION ON CDU SHOWS RT EXCITER IGNITION 2 OUT OF RANGE,  NR 1 ENGINE, FOUND ENGINE 1 IGNITION RIGHT CIRCUIT BREAKER OUT.  RESET IGNITION BREAKER IAW AMM 20-60-01,  STARTED NR 1 ENGINE,  ENGINE START NORMAL, NO DEFECT NOTED. IAW AMM 71-00-00-800-808-F00.  GROUND OPERATIONAL TEST SUCCESSFUL.

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