Narrative:

After takeoff at ZZZ, I thought baggage fire light might be lit. I pressed fire test to check -- there was no EICAS indication. After fire test, I found out it was not, but bag light stayed lit, but pressed extinguisher instead. This was during climb flow on approach to ZZZ1. First officer called for flaps to 9 degrees and I can't be sure they weren't already there and, therefore, entire flight I was very distraction after accidentally firing bag fire bottle. And still I am not sure if flaps were up or down. I wrote up accidental discharge of bottle and returned to ZZZ. I can't be sure of possible overspd because things were very disrupted after bag light problem whether to go back to ZZZ or continue. I chose to continue. Callback conversation with reporter revealed the following information: the reporter stated the baggage fire extinguisher bottle does not have an arming switch, but does have a switch guard. The reporter said the switch guard can easily be bypassed by slipping your finger underneath the guard. The reporter stated the fire warning test has a particular characteristic that after the test if made, all fire warning lights go out except the baggage light which remains on until the fire test switch is momentarily tapped.

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Original NASA ASRS Text

Title: AN EMBRAER 145 MAY HAVE BEEN OPERATED WITH THE FLAPS EXTENDED IN AN OVERSPD CONDITION DUE TO CREW DISTR WITH A BAGGAGE FIRE LIGHT.

Narrative: AFTER TKOF AT ZZZ, I THOUGHT BAGGAGE FIRE LIGHT MIGHT BE LIT. I PRESSED FIRE TEST TO CHK -- THERE WAS NO EICAS INDICATION. AFTER FIRE TEST, I FOUND OUT IT WAS NOT, BUT BAG LIGHT STAYED LIT, BUT PRESSED EXTINGUISHER INSTEAD. THIS WAS DURING CLB FLOW ON APCH TO ZZZ1. FO CALLED FOR FLAPS TO 9 DEGS AND I CAN'T BE SURE THEY WEREN'T ALREADY THERE AND, THEREFORE, ENTIRE FLT I WAS VERY DISTR AFTER ACCIDENTALLY FIRING BAG FIRE BOTTLE. AND STILL I AM NOT SURE IF FLAPS WERE UP OR DOWN. I WROTE UP ACCIDENTAL DISCHARGE OF BOTTLE AND RETURNED TO ZZZ. I CAN'T BE SURE OF POSSIBLE OVERSPD BECAUSE THINGS WERE VERY DISRUPTED AFTER BAG LIGHT PROB WHETHER TO GO BACK TO ZZZ OR CONTINUE. I CHOSE TO CONTINUE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE BAGGAGE FIRE EXTINGUISHER BOTTLE DOES NOT HAVE AN ARMING SWITCH, BUT DOES HAVE A SWITCH GUARD. THE RPTR SAID THE SWITCH GUARD CAN EASILY BE BYPASSED BY SLIPPING YOUR FINGER UNDERNEATH THE GUARD. THE RPTR STATED THE FIRE WARNING TEST HAS A PARTICULAR CHARACTERISTIC THAT AFTER THE TEST IF MADE, ALL FIRE WARNING LIGHTS GO OUT EXCEPT THE BAGGAGE LIGHT WHICH REMAINS ON UNTIL THE FIRE TEST SWITCH IS MOMENTARILY TAPPED.

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.