Narrative:

After shutting down engine #1 and feathering engine #2 in order to accommodate a last min passenger, our #1 inverter faulted. Mins later while attempting a maintenance requested circuit breaker reset, smoke developed in cockpit. I initiated a controled evacuate/evacuation of 41 passenger which resulted in no injuries. Aircraft never left gate, but successive opening and closing of main cabin door resulted in ACARS-generated out-time. Checklists were followed explicitly and at no time were FARS, company procedures, etc, violated in any way. Passenger were happy with flight after new aircraft xfer. Source of smoke unknown.

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Original NASA ASRS Text

Title: AN ATR42 CREW ORDERS THE EVAC OF ITS 41 PAX WHEN SMOKE DEVELOPS IN THE COCKPIT AFTER RESETTING THE CIRCUIT BREAKER FOR A FAULTED AC INVERTER UNIT ON THE RAMP AT SJU, PR.

Narrative: AFTER SHUTTING DOWN ENG #1 AND FEATHERING ENG #2 IN ORDER TO ACCOMMODATE A LAST MIN PAX, OUR #1 INVERTER FAULTED. MINS LATER WHILE ATTEMPTING A MAINT REQUESTED CIRCUIT BREAKER RESET, SMOKE DEVELOPED IN COCKPIT. I INITIATED A CTLED EVAC OF 41 PAX WHICH RESULTED IN NO INJURIES. ACFT NEVER LEFT GATE, BUT SUCCESSIVE OPENING AND CLOSING OF MAIN CABIN DOOR RESULTED IN ACARS-GENERATED OUT-TIME. CHKLISTS WERE FOLLOWED EXPLICITLY AND AT NO TIME WERE FARS, COMPANY PROCS, ETC, VIOLATED IN ANY WAY. PAX WERE HAPPY WITH FLT AFTER NEW ACFT XFER. SOURCE OF SMOKE UNKNOWN.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.