<< >> NASA ASRS Report 590163, August 2003

B737-900 crew had a B190 taxi across their takeoff runway, after they were cleared for takeoff. When operation was questioned via dispatch, tower alleged, 'it could not have happened.'

Attributes
ACN	590163
Time
Date	200308
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bos.airport
State Reference	MA
Altitude	agl single value : 0
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-900
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff ground : takeoff roll
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : bos.tower
Operator	common carrier : air taxi
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	590163
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : published procedure non adherence : far non adherence : required legal separation
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew other
Miss Distance	horizontal : 2500 vertical : 0
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Intra Facility Coordination Failure

Narrative:

On departure of flight from bos logan field, we were cleared into position and hold on runway 15R at approximately XD52Z. We were cleared for takeoff at XD54Z. As we were beginning our takeoff roll, I noticed an aircraft rolling out on runway 4L, which intersected our departure runway. Approximately 7-8 seconds after we received our takeoff clearance, the beech 1900 crossed our runway at a slow speed and continued roll on runway 4L. Due to our heavy gross weight and spool time, we were still 2500 ft away from the intersection and were able to continue our takeoff with no conflict. We contacted dispatch through ACARS and asked them to call the tower and ask about the incident. Dispatch reply from the tower was, 'it could not have happened.'

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Original NASA ASRS Text

Title: B737-900 CREW HAD A B190 TAXI ACROSS THEIR TKOF RWY, AFTER THEY WERE CLRED FOR TKOF. WHEN OP WAS QUESTIONED VIA DISPATCH, TWR ALLEGED, 'IT COULD NOT HAVE HAPPENED.'

Narrative: ON DEP OF FLT FROM BOS LOGAN FIELD, WE WERE CLRED INTO POS AND HOLD ON RWY 15R AT APPROX XD52Z. WE WERE CLRED FOR TKOF AT XD54Z. AS WE WERE BEGINNING OUR TKOF ROLL, I NOTICED AN ACFT ROLLING OUT ON RWY 4L, WHICH INTERSECTED OUR DEP RWY. APPROX 7-8 SECONDS AFTER WE RECEIVED OUR TKOF CLRNC, THE BEECH 1900 CROSSED OUR RWY AT A SLOW SPD AND CONTINUED ROLL ON RWY 4L. DUE TO OUR HVY GROSS WT AND SPOOL TIME, WE WERE STILL 2500 FT AWAY FROM THE INTXN AND WERE ABLE TO CONTINUE OUR TKOF WITH NO CONFLICT. WE CONTACTED DISPATCH THROUGH ACARS AND ASKED THEM TO CALL THE TWR AND ASK ABOUT THE INCIDENT. DISPATCH REPLY FROM THE TWR WAS, 'IT COULD NOT HAVE HAPPENED.'

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.