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B737-800 Maintenance Technician reported ignition leads were swapped instead of the power supply cables.

Date: 2026-01 · Aircraft: B737-800 · Phase: ground

Anomalies: Aircraft equipment problem criticalDeviation discrepancy procedural mel cdlDeviation discrepancy procedural FARDeviation discrepancy procedural maintenanceDeviation discrepancy procedural published material policy

Synopsis

B737-800 Maintenance Technician reported ignition leads were swapped instead of the power supply cables.

Narrative

While accomplishing the Maintenance actions for MEL; incorrect leads have been swapped. ignition leads have been swapped instead of the power supply cables.Suggestions: Contacted Maintenance Control to advise of the incorrect configuration. log page has been updated to verify ignition leads and power supply cables are in the correct configuration prior to next departure.

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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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