FLC TAKES OFF WITHOUT GETTING THE IFR CLRNC FROM THE PDC.

Narrative

CHAIN OF EVENTS: UPON ARR AT A NEW ACFT DURING MY COCKPIT PREFLT I NORMALLY ZERO THE XPONDER AS A REMINDER TO MYSELF TO GET A CLRNC/PDC. IN THIS CASE I DID NOT DO THIS. AS REQUIRED BY COMPANY PROC; DURING OUR DEP REVIEW WE REVIEW THE CLRNC TO VERIFY IT WITH THE FILED RTE. AS A FO I NORMALLY PULL UP THE CLRNCS AND GENERALLY POINT OUT ANY DIFFERENCES IN THE CLRNC RECEIVED TO THE CAPT AT THIS POINT; OR TELL HIM WE ARE CLRED AS FILED. AGAIN; DIDN'T DO IT IN THIS CASE. I SAW A CODE IN THE XPONDER AS WELL AS A DEP FREQ SET IN ON AN UNUSED RADIO HEAD SO I DID NOT THINK ANYTHING ABOUT NOT HAVING A CLRNC. (DEP FREQ WAS EVIDENTLY SET IN THE UNUSED RADIO BY THE PREVIOUS CREW.) MANY TIMES A WELL INTENTIONED INBOUND CREW WILL SET UP RADIOS; NAVAIDS; ETC FOR THE NEXT CREW BASED UPON EXPERIENCE AND KNOWLEDGE OF WHERE THE ACFT IS GOING NEXT. PERHAPS HAD I NOT SEEN A VALID BUT INCORRECT DEP FREQ IN THE UNUSED RADIO HEAD MY MEMORY MIGHT HAVE BEEN JOGGED TO GET A CLRNC. HOW THE PROB WAS RECOGNIZED: AFTER TKOF I HAD A VALID BUT INCORRECT DEP FREQ IN THE RADIO. THE CTLR DIRECTED ME TO THE PROPER FREQ. THE NEXT CTLR ASKED US A NEW SQUAWK CODE. WONDERING WHY I MADE THESE 2 ERRORS I PULLED UP THE PDC PAGE ON THE ACARS ONLY TO FIND NO PDC. CORRECTIVE ACTIONS: MANY FIELDS; EG; ORD; LGA; BOS REQUIRE A READBACK OF SQUAWK CODE UPON RECEIPT OF A PDC CLRNC. HAD THIS BEEN THE CASE IN BWI MY GUESS IS THAT THE GND CTLR WOULD HAVE CAUGHT MY ERROR AND INQUIRED ABOUT OUR CLRNC. THIS WOULD BE A SIMPLE FIX THAT WOULD ALSO SERVE TO BETTER STANDARDIZE PDC EQUIPPED FIELDS THROUGHOUT THE COUNTY.