B737-800
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed; General Maintenance Action
Logbook Entry; Aircraft; Manuals; Procedure
The aircraft had maintenance done for the Captain's System Annunciator Panel. When we were in cruise flight; the center fuel tanks were empty and the correct Master Caution Warning light illuminated. On the Captain's System Annunciator Panel; we however saw a 'Doors' annunciation in place of the expected 'Fuel' annunciation. The Captain's Annunciator Panel had incorrectly been replaced with a First Officer Annunciator Panel three days prior.Maintenance had installed the wrong part. Several pilots missed the error on previous days. The lights were working; it can easily be missed that the annunciations were wrong. Maintenance supervisors need to emphasize attention to detail to their mechanics. Pilots; including myself; need to look more carefully at the annunciations; in this case during multiple 'recall' checks.
B737 First Officer reported Maintenance installing incorrect System Annunciator Panel; causing aircraft to fly several flights in an unairworthy condition.