<< >> NASA ASRS Report 399074, April 1998

Loss of separation between a C150 departing full length from runway 33R and a BE36 cleared for takeoff on the same runway at intersection F.

Attributes
ACN	399074
Time
Date	199804
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bfl
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : initial
Route In Use	approach : visual departure other
Flight Plan	VFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Bonanza 36
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff ground other : taxi
Route In Use	approach : visual departure other
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar pilot : student
Experience	controller radar : 8 flight time total : 7
ASRS Report	399074
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : ground critical non adherence : published procedure non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : rejected takeoff
Consequence	Other
Miss Distance	horizontal : 300
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I cleared C150 for takeoff on runway 30R (full length). After reviewing the d-brite for additional inbounds, BE36 called ready for takeoff at intersection F. After a brief scan of the d-brite and acknowledging 2 other aircraft, I cleared BE36 for takeoff, missing C150 on departure roll. I cleared another aircraft to land on runway 30L. At that point I noticed C150 climbing out and BE36 breaking hard on the runway. C150 veered left to avoid overflying BE36. I instructed BE36 to taxi into position and hold, and alerted the supervisor.

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Original NASA ASRS Text

Title: LOSS OF SEPARATION BTWN A C150 DEPARTING FULL LENGTH FROM RWY 33R AND A BE36 CLRED FOR TKOF ON THE SAME RWY AT INTXN F.

Narrative: I CLRED C150 FOR TKOF ON RWY 30R (FULL LENGTH). AFTER REVIEWING THE D-BRITE FOR ADDITIONAL INBOUNDS, BE36 CALLED READY FOR TKOF AT INTXN F. AFTER A BRIEF SCAN OF THE D-BRITE AND ACKNOWLEDGING 2 OTHER ACFT, I CLRED BE36 FOR TKOF, MISSING C150 ON DEP ROLL. I CLRED ANOTHER ACFT TO LAND ON RWY 30L. AT THAT POINT I NOTICED C150 CLBING OUT AND BE36 BREAKING HARD ON THE RWY. C150 VEERED L TO AVOID OVERFLYING BE36. I INSTRUCTED BE36 TO TAXI INTO POS AND HOLD, AND ALERTED THE SUPVR.

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.