AFTER A 1 HR TFC DELAY ON THE GND; AN F100 PIC TAKES OFF WITH LESS THAN MINIMUM TKOF FUEL; DESPITE THE ALERT ISSUED BY HIS FO AT ORD; IL.

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LOCATION: END OF RWY 14L; TAXI PRE-TKOF. AFTER A LENGTHY DELAY FOR TKOF; WE WERE FINALLY NEAR DEP. I CHKED THE FLT PLAN TO VERIFY MINIMUM TKOF FUEL BECAUSE OF THE LONG DELAY. I BELIEVE THE FUEL WAS 19200 LBS. OUR MINIMUM TKOF FUEL WAS AROUND 19400 LBS. I ADVISED THE CAPT THAT WE WERE BELOW MINIMUM TKOF FUEL. THE CAPT BRUSQUELY REPLIED THAT HE WAS AWARE OF THAT. I ASKED THE CAPT IF HE WANTED ME TO GET A LOWER RELEASE FUEL FROM DISPATCH BEFORE TKOF. THE CAPT REPLIED; 'NO.' HE SAID HE WAS COMFORTABLE WITH IT. I SAID; 'I'M NOT.' WE TOOK OFF. SO; HERE I AM FOLLOWING UP ON THIS PARTICULAR INCIDENT. NOT THAT IT SHOULD MATTER; BUT THERE WAS PLENTY OF TIME TO GET AN UPDATED RELEASE WITHOUT DISRUPTING THE TKOF SEQUENCE OR TIME. SUPPLEMENTAL INFO FROM ACN 589677: AFTER 1 HR SINGLE ENG TAXI TO RWY 14L. INTO POS AND HOLD. 20 MI SEPARATION SE DEPS. APPROX 35-40 ACFT BEHIND US WAITING FOR DEP. MINIMUM TKOF FUEL REACHED AS WE TAXIED INTO POS. 1 HR HOLD FUEL WITH 1500 LBS ADDITIONAL. I ELECTED TO ACCEPT TKOF CLRNC WITH ALL KNOWN VARIABLES AT THAT TIME.