Narrative:

Flight had an altitude deviation of 1000 ft climbing out of mco en route to srq. The reason for the deviation was due to the wrong barometric pressure setting on the captain's altimeter. The setting was 28.84 but should have been 29.84. The problem was discovered by TCASII warning 'stop climb.' the conflict traffic was missed by 300 ft vertical and about 2 mi horizontal. As a corrective measure I would suggest a xchk of altimeters on the before starting engine checklist.

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Original NASA ASRS Text

Title: WRONG ALTIMETER SETTING CAUSES TCASII RA.

Narrative: FLT HAD AN ALT DEV OF 1000 FT CLBING OUT OF MCO ENRTE TO SRQ. THE REASON FOR THE DEV WAS DUE TO THE WRONG BAROMETRIC PRESSURE SETTING ON THE CAPT'S ALTIMETER. THE SETTING WAS 28.84 BUT SHOULD HAVE BEEN 29.84. THE PROB WAS DISCOVERED BY TCASII WARNING 'STOP CLB.' THE CONFLICT TFC WAS MISSED BY 300 FT VERT AND ABOUT 2 MI HORIZ. AS A CORRECTIVE MEASURE I WOULD SUGGEST A XCHK OF ALTIMETERS ON THE BEFORE STARTING ENG CHKLIST.

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.