Narrative:

Small transport X was on final runway 06, traffic in left pattern runway 30 was an mlt Y. I was training a developmental with approximately 70 hours on local. Mlt Y had been cleared for the option runway 30 as he was passing over the final for runway 06. At that time the small transport X was approximately 6 mi out for runway 06. The situation progressed and my developmental misjudged mlt Y helicopter speed and realized she would need a landing to hold short (1900 ft). She issued the restriction to the mlt Y helicopter as he approached 1 mi final. Small transport X was 1 1/2 mi out for runway 06. Mlt Y helicopter responded 'unable.' she then let the situation progress and issued mlt Y helicopter 'no delay through intersection runway 06 traffic small transport X 3/4 mi final.' at the time of this clearance mlt Y was 1/2 mi final. He accepted restriction, but in my opinion did nothing to increase his speed. I told her (my developmental) to 'have somebody go around' as mlt Y passed taxiway alpha (1100 ft from approach end) and small transport X was very short final (about 200 ft). She (developmental) did nothing. Mlt Y helicopter occupied lateral limits of runway 06 as small transport X crossed the numbers on runway 06 and did not clear until small transport X was approximately 800 ft down the runway. Problem arose due to misjudgment on part of developmental. She tried 2 corrective actions and both failed. I cannot explain the inaction on my part, I just stood there as it happened, I let it happen. This is my first trainee, I have learned a lot up to this point and especially today. I will override in the future to maintain separation. This is my ticket we're operating on.

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Original NASA ASRS Text

Title: CTLR TRAINING IN PROGRESS AND LTSS OCCURRED BTWN SMT AND MLT USING INTERSECTING RWYS.

Narrative: SMT X WAS ON FINAL RWY 06, TFC IN L PATTERN RWY 30 WAS AN MLT Y. I WAS TRAINING A DEVELOPMENTAL WITH APPROX 70 HRS ON LCL. MLT Y HAD BEEN CLRED FOR THE OPTION RWY 30 AS HE WAS PASSING OVER THE FINAL FOR RWY 06. AT THAT TIME THE SMT X WAS APPROX 6 MI OUT FOR RWY 06. THE SITUATION PROGRESSED AND MY DEVELOPMENTAL MISJUDGED MLT Y HELI SPD AND REALIZED SHE WOULD NEED A LNDG TO HOLD SHORT (1900 FT). SHE ISSUED THE RESTRICTION TO THE MLT Y HELI AS HE APCHED 1 MI FINAL. SMT X WAS 1 1/2 MI OUT FOR RWY 06. MLT Y HELI RESPONDED 'UNABLE.' SHE THEN LET THE SITUATION PROGRESS AND ISSUED MLT Y HELI 'NO DELAY THROUGH INTXN RWY 06 TFC SMT X 3/4 MI FINAL.' AT THE TIME OF THIS CLRNC MLT Y WAS 1/2 MI FINAL. HE ACCEPTED RESTRICTION, BUT IN MY OPINION DID NOTHING TO INCREASE HIS SPD. I TOLD HER (MY DEVELOPMENTAL) TO 'HAVE SOMEBODY GAR' AS MLT Y PASSED TAXIWAY ALPHA (1100 FT FROM APCH END) AND SMT X WAS VERY SHORT FINAL (ABOUT 200 FT). SHE (DEVELOPMENTAL) DID NOTHING. MLT Y HELI OCCUPIED LATERAL LIMITS OF RWY 06 AS SMT X CROSSED THE NUMBERS ON RWY 06 AND DID NOT CLR UNTIL SMT X WAS APPROX 800 FT DOWN THE RWY. PROBLEM AROSE DUE TO MISJUDGMENT ON PART OF DEVELOPMENTAL. SHE TRIED 2 CORRECTIVE ACTIONS AND BOTH FAILED. I CANNOT EXPLAIN THE INACTION ON MY PART, I JUST STOOD THERE AS IT HAPPENED, I LET IT HAPPEN. THIS IS MY FIRST TRAINEE, I HAVE LEARNED A LOT UP TO THIS POINT AND ESPECIALLY TODAY. I WILL OVERRIDE IN THE FUTURE TO MAINTAIN SEPARATION. THIS IS MY TICKET WE'RE OPERATING ON.

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.