Narrative:

We took off runway 32L at T10 and were assigned a heading of 020 degrees in the takeoff clearance. During a normal climb out while turning to 020 degrees, I heard the captain say, 'uh oh.' I asked what? He said he would tell me later. After leveloff, the captain said he may have blown the bottle in the baggage compartment. We landed in msn and he went into operations. When he returned, he advised that he had called dispatch and they informed him we could return to ord with passenger only and no bags. We returned to ord with passenger only. The flight was uneventful.

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Original NASA ASRS Text

Title: THE CARGO COMPARTMENT FIRE EXTINGUISHER IN AN EMJ FLT IS ACCIDENTALLY TRIGGERED BY THE PIC DURING DEP FROM ORD, IL.

Narrative: WE TOOK OFF RWY 32L AT T10 AND WERE ASSIGNED A HDG OF 020 DEGS IN THE TKOF CLRNC. DURING A NORMAL CLBOUT WHILE TURNING TO 020 DEGS, I HEARD THE CAPT SAY, 'UH OH.' I ASKED WHAT? HE SAID HE WOULD TELL ME LATER. AFTER LEVELOFF, THE CAPT SAID HE MAY HAVE BLOWN THE BOTTLE IN THE BAGGAGE COMPARTMENT. WE LANDED IN MSN AND HE WENT INTO OPS. WHEN HE RETURNED, HE ADVISED THAT HE HAD CALLED DISPATCH AND THEY INFORMED HIM WE COULD RETURN TO ORD WITH PAX ONLY AND NO BAGS. WE RETURNED TO ORD WITH PAX ONLY. THE FLT WAS UNEVENTFUL.

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.