Narrative:

The problem arose prior to departing dal; on the second leg of the day; and finishing the before takeoff checklist with a new hire copilot in training. While holding short and listening to a busy control tower (giving the time of day); I gave a final review of the dallas 8 departure procedure and reviewed takeoff items with the new copilot. I told the copilot to let tower know that we were ready for departure. Tower told us to hold short. After holding short; tower instructed our aircraft to taxi into position and hold runway 13R; without an explanation. While I taxied into position to hold; I was hearing all the other clrncs and instructions from tower and heard the tower say 'clear for takeoff.' I said to the copilot 'clear for takeoff;' not knowing that there was another aircraft on the parallel runway (runway 13L); because of not being able to see the other runway from runway 13R. I proceeded to take off. After takeoff and climbing out; I noticed a learjet 45 climbing ahead of me; much faster; at my 10:30 - 11 O'clock position; off the parallel runway; 13L. In the climb; tower started to get an instruction to us about traffic; but stopped talking in the middle of the instruction sentence. Tower came back instructing us to 'turn; turn right 15 degrees.' before; during and after the time of the clearance to 'turn;' while in the climb; I had a visual on the lear 45. I proceeded with the clearance to 'turn' and started looking for other traffic. On a heading of 145 degrees; tower instructed us to contact regional approach control. My copilot checked in with the altitude we were out of; and climbing to; and heading. I called back to approach and said 'what was all that about?' the approach controller replied calmly; 'I don't know? But we'll get you on your way.' just before approach handed us over to ZFW; he instructed us to call love tower. At our destination; I called love tower. The gentlemen said 'thanks for calling back.' at that point he informed me that I took off runway 13R at love field without a takeoff clearance. Some contributing factors were 1) training a new hire copilot with the company's SOP's; 2) frequency congestion; 3) the ability to visually check the parallel for departing traffic; 4) not verifying clearance instructions for takeoff; 5) and being complacent in flying in and out of dallas love field weekly.

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Original NASA ASRS Text

Title: MU 300 FLT CREW DEPARTED WITHOUT TKOF CLRNC.

Narrative: THE PROB AROSE PRIOR TO DEPARTING DAL; ON THE SECOND LEG OF THE DAY; AND FINISHING THE BEFORE TKOF CHKLIST WITH A NEW HIRE COPLT IN TRAINING. WHILE HOLDING SHORT AND LISTENING TO A BUSY CTL TWR (GIVING THE TIME OF DAY); I GAVE A FINAL REVIEW OF THE DALLAS 8 DEP PROC AND REVIEWED TKOF ITEMS WITH THE NEW COPLT. I TOLD THE COPLT TO LET TWR KNOW THAT WE WERE READY FOR DEP. TWR TOLD US TO HOLD SHORT. AFTER HOLDING SHORT; TWR INSTRUCTED OUR ACFT TO TAXI INTO POS AND HOLD RWY 13R; WITHOUT AN EXPLANATION. WHILE I TAXIED INTO POS TO HOLD; I WAS HEARING ALL THE OTHER CLRNCS AND INSTRUCTIONS FROM TWR AND HEARD THE TWR SAY 'CLR FOR TKOF.' I SAID TO THE COPLT 'CLR FOR TKOF;' NOT KNOWING THAT THERE WAS ANOTHER ACFT ON THE PARALLEL RWY (RWY 13L); BECAUSE OF NOT BEING ABLE TO SEE THE OTHER RWY FROM RWY 13R. I PROCEEDED TO TAKE OFF. AFTER TKOF AND CLBING OUT; I NOTICED A LEARJET 45 CLBING AHEAD OF ME; MUCH FASTER; AT MY 10:30 - 11 O'CLOCK POS; OFF THE PARALLEL RWY; 13L. IN THE CLB; TWR STARTED TO GET AN INSTRUCTION TO US ABOUT TFC; BUT STOPPED TALKING IN THE MIDDLE OF THE INSTRUCTION SENTENCE. TWR CAME BACK INSTRUCTING US TO 'TURN; TURN R 15 DEGS.' BEFORE; DURING AND AFTER THE TIME OF THE CLRNC TO 'TURN;' WHILE IN THE CLB; I HAD A VISUAL ON THE LEAR 45. I PROCEEDED WITH THE CLRNC TO 'TURN' AND STARTED LOOKING FOR OTHER TFC. ON A HDG OF 145 DEGS; TWR INSTRUCTED US TO CONTACT REGIONAL APCH CTL. MY COPLT CHKED IN WITH THE ALT WE WERE OUT OF; AND CLBING TO; AND HDG. I CALLED BACK TO APCH AND SAID 'WHAT WAS ALL THAT ABOUT?' THE APCH CTLR REPLIED CALMLY; 'I DON'T KNOW? BUT WE'LL GET YOU ON YOUR WAY.' JUST BEFORE APCH HANDED US OVER TO ZFW; HE INSTRUCTED US TO CALL LOVE TWR. AT OUR DEST; I CALLED LOVE TWR. THE GENTLEMEN SAID 'THANKS FOR CALLING BACK.' AT THAT POINT HE INFORMED ME THAT I TOOK OFF RWY 13R AT LOVE FIELD WITHOUT A TKOF CLRNC. SOME CONTRIBUTING FACTORS WERE 1) TRAINING A NEW HIRE COPLT WITH THE COMPANY'S SOP'S; 2) FREQ CONGESTION; 3) THE ABILITY TO VISUALLY CHK THE PARALLEL FOR DEPARTING TFC; 4) NOT VERIFYING CLRNC INSTRUCTIONS FOR TKOF; 5) AND BEING COMPLACENT IN FLYING IN AND OUT OF DALLAS LOVE FIELD WKLY.

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.