B727 CREW CONFUSED BY PHRASEOLOGY OF POS AND HOLD CLRNC AND BEGINS TKOF WITHOUT CLRNC AT DFW.

Narrative

WE WERE CLRED INTO POS AND HOLD AND I BELIEVE I READ BACK CLRED FOR TKOF. THEN THE CTLR ADVISED US OF TFC ON A 5 MI FINAL. THE IMPRESSION HE LEFT WITH ME WAS TO HURRY. THE COMMON PHRASING THAT I HAVE HEARD IN A SIT LIKE THIS IS 'TFC ON A 5 MI FINAL; BE READY TO GO.' THIS TYPE OF PHRASEOLOGY REAFFIRMS THE CLRNC THAT IT WAS ONLY POS AND HOLD. WE INSTEAD ROLLED ABOUT 200-300 FT AND THEN TWR ADVISED US THAT WE WERE NOT CLRED FOR TKOF. I TOOK CTL OF ACFT (COPLT'S LEG) AND BROUGHT THE ACFT TO A STOP ON RWY 18R AT ABOUT 800 FT FROM THE END. WE HAD USED INTXN FOR TKOF. IMMEDIATELY ON STOPPING THE TWR ADVISED CLRED FOR TKOF AND WE WENT FROM THERE USING MAX THRUST KNOWING WE HAD PLENTY OF RWY AVAILABLE. HAD THE CTLR USED THE PHRASEOLOGY OF 'TFC ON A 5 MI FINAL; BE READY TO GO' OR 'TFC ON 5 MI FINAL; HAVE THEM SPOOLED UP;' THIS WOULD HAVE CLUED US IN THAT IT WAS INDEED ONLY A POS AND HOLD CLRNC. ALSO; IF THE CTLR HEARD AS CLRED FOR TKOF REPLY HE SHOULD CORRECT OUR READBACK. SUPPLEMENTAL INFO FROM ACN 456160: AT BEST; IT WAS POOR COM/NONSTANDARD PHRASEOLOGY. FATIGUE WAS A FACTOR; AS THE CAPT HAD ONLY 5 1/2 HRS SLEEP THE 24 HRS PRIOR; AND I HAD 4 1/2 HRS. CLR COMS AND EXACT PHRASEOLOGY ARE CRITICAL. SUPPLEMENTAL INFO FROM ACN 456161: THE CAPT (IN THE R SEAT; DOING IOE FOR A CAPT UPGRADE) SAID 'ALL RIGHT; WE'LL KEEP IT ROLLING HERE' OR SOMETHING TO THAT EFFECT; AND THE CTLR SAID NOTHING IN RESPONSE. THE CAPT WAS ALSO GIVING THE CAPT IOE POINTERS AND INSTRUCTION AS WE TAXIED ONTO THE RWY. WE STILL HAD OVER 10000 FT OF RWY AHEAD OF US. I BELIEVE THE TWR'S STATEMENT IMPLYING TO HURRY WAS CONFUSING AND I WOULD RECOMMEND TWR SAY 'BE READY TO GO' INSTEAD.