Narrative:

First day of 3 day trip with captain flying and me on radio. Didn't know captain and had not flown with him before. He shows up at aircraft at departure time, sits down and introduces himself. I had done all the preflight tasks for departure. We push and taxi to runway 18R in clt for takeoff on runway 18R, hornet 1 departure, naley transition. Taxi/takeoff, the captain has his speaker on and no headset. I wear a headset. With his speaker on, I had to turn my volume down to hear without discomfort. Captain under-rotates on takeoff and is V2 +20 KTS before mains leave runway. Shallow climb with speeds approaching flap limit speeds shortly after takeoff. Tower gives 200 degree heading and switch to departure frequency at flap retraction altitude. As I check-in with departure, captain raises the flaps himself. Departure immediately gives a 250 degree heading that I read back. Captain says 'no, it was 350 degrees.' I asked controller again, and again thought I heard 250 degrees. Captain says '350,' and sets his own heading to 350 degrees. Having problems hearing with the speaker on, I thought I must be incorrect thinking it was 250 degrees he was saying. I think I read back 350 as we were turning to that heading. Shortly thereafter, we had an RA on traffic descending into clt. Controller asked about the heading as we leveled to follow the RA. Controller also vectored us left to avoid traffic. Contributing factors: captain showing up late, and non standard practices, ie, no headset, takeoff profile, manipulating own flaps and heading on MCP, weak departure radio 120.5 and difficulty hearing with headset and speaker on simultaneously, controller not challenging my final readback of an incorrect heading of 350 degrees.

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Original NASA ASRS Text

Title: CRITICAL CONFLICT ON DEP BTWN A B737-300 FLT AND ANOTHER FLT INBOUND TO CLT, NC.

Narrative: FIRST DAY OF 3 DAY TRIP WITH CAPT FLYING AND ME ON RADIO. DIDN'T KNOW CAPT AND HAD NOT FLOWN WITH HIM BEFORE. HE SHOWS UP AT ACFT AT DEP TIME, SITS DOWN AND INTRODUCES HIMSELF. I HAD DONE ALL THE PREFLT TASKS FOR DEP. WE PUSH AND TAXI TO RWY 18R IN CLT FOR TKOF ON RWY 18R, HORNET 1 DEP, NALEY TRANSITION. TAXI/TKOF, THE CAPT HAS HIS SPEAKER ON AND NO HEADSET. I WEAR A HEADSET. WITH HIS SPEAKER ON, I HAD TO TURN MY VOLUME DOWN TO HEAR WITHOUT DISCOMFORT. CAPT UNDER-ROTATES ON TKOF AND IS V2 +20 KTS BEFORE MAINS LEAVE RWY. SHALLOW CLB WITH SPDS APCHING FLAP LIMIT SPDS SHORTLY AFTER TKOF. TWR GIVES 200 DEG HDG AND SWITCH TO DEP FREQ AT FLAP RETRACTION ALT. AS I CHK-IN WITH DEP, CAPT RAISES THE FLAPS HIMSELF. DEP IMMEDIATELY GIVES A 250 DEG HDG THAT I READ BACK. CAPT SAYS 'NO, IT WAS 350 DEGS.' I ASKED CTLR AGAIN, AND AGAIN THOUGHT I HEARD 250 DEGS. CAPT SAYS '350,' AND SETS HIS OWN HEADING TO 350 DEGS. HAVING PROBS HEARING WITH THE SPEAKER ON, I THOUGHT I MUST BE INCORRECT THINKING IT WAS 250 DEGS HE WAS SAYING. I THINK I READ BACK 350 AS WE WERE TURNING TO THAT HEADING. SHORTLY THEREAFTER, WE HAD AN RA ON TFC DSNDING INTO CLT. CTLR ASKED ABOUT THE HEADING AS WE LEVELED TO FOLLOW THE RA. CTLR ALSO VECTORED US L TO AVOID TFC. CONTRIBUTING FACTORS: CAPT SHOWING UP LATE, AND NON STANDARD PRACTICES, IE, NO HEADSET, TKOF PROFILE, MANIPULATING OWN FLAPS AND HEADING ON MCP, WEAK DEP RADIO 120.5 AND DIFFICULTY HEARING WITH HEADSET AND SPEAKER ON SIMULTANEOUSLY, CTLR NOT CHALLENGING MY FINAL READBACK OF AN INCORRECT HEADING OF 350 DEGS.

Data retrieved from NASA's ASRS site as of July 2007 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.