Unauthorized uncoord takeoff on occupied runway.

Attributes
ACN	149083
Time
Date	199006
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mqb
State Reference	IL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft
Flight Phase	ground other : taxi
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 3 flight time total : 114 flight time type : 76
ASRS Report	149083
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : published procedure non adherence : required legal separation non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 3000 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility procedure or policy : unspecified

Narrative:

I was prepared for departure at runway 27, macomb, waiting for low wing aircraft to land. After it landed I saw that the taxiway at the west end of the runway was congested with 3 aircraft preparing to back-taxi in preparation for departure on runway 27. Because the runway was not clear, I should have aborted the takeoff. However, in my judgement, I decided I had adequate runway available, and took off west/O incident. I am preparing this report because I clearly should not have taken off under the conditions described. A mechanical failure could have caused an accident. The decision/judgement process on my part was faulty--never again!

Original NASA ASRS Text

Title: UNAUTH UNCOORD TKOF ON OCCUPIED RWY.

Narrative: I WAS PREPARED FOR DEP AT RWY 27, MACOMB, WAITING FOR LOW WING ACFT TO LAND. AFTER IT LANDED I SAW THAT THE TXWY AT THE W END OF THE RWY WAS CONGESTED WITH 3 ACFT PREPARING TO BACK-TAXI IN PREPARATION FOR DEP ON RWY 27. BECAUSE THE RWY WAS NOT CLR, I SHOULD HAVE ABORTED THE TKOF. HOWEVER, IN MY JUDGEMENT, I DECIDED I HAD ADEQUATE RWY AVAILABLE, AND TOOK OFF W/O INCIDENT. I AM PREPARING THIS RPT BECAUSE I CLEARLY SHOULD NOT HAVE TAKEN OFF UNDER THE CONDITIONS DESCRIBED. A MECHANICAL FAILURE COULD HAVE CAUSED AN ACCIDENT. THE DECISION/JUDGEMENT PROCESS ON MY PART WAS FAULTY--NEVER AGAIN!

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.