Narrative:

I was told that there were 4 infants on board but only 3 infant life vests. I reviewed flight manual part 1 and found no reference to infant life vests. I called dispatch with our concern. The dispatcher was only able to find an MEL that would be used if the aircraft had less than 3 life vests. The aircraft had 3 infant life vests. We determined that we were in compliance and the flight proceeded uneventfully.

Google
 

Original NASA ASRS Text

Title: CRJ700 FLT CREW IS CONCERNED WITH LACK OF INFANT LIFE VESTS PRIOR TO DEP.

Narrative: I WAS TOLD THAT THERE WERE 4 INFANTS ON BOARD BUT ONLY 3 INFANT LIFE VESTS. I REVIEWED FLT MANUAL PART 1 AND FOUND NO REF TO INFANT LIFE VESTS. I CALLED DISPATCH WITH OUR CONCERN. THE DISPATCHER WAS ONLY ABLE TO FIND AN MEL THAT WOULD BE USED IF THE ACFT HAD LESS THAN 3 LIFE VESTS. THE ACFT HAD 3 INFANT LIFE VESTS. WE DETERMINED THAT WE WERE IN COMPLIANCE AND THE FLT PROCEEDED UNEVENTFULLY.

Data retrieved from NASA's ASRS site as of January 2009 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.