Uncontrolled airport traffic conflict between a helicopter and fixed wing aircraft during takeoff.

Attributes
ACN	475195
Time
Date	200006
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : fdk.airport
State Reference	MD
Altitude	msl single value : 300
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : personal
Make Model Name	Tampico TB-9
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial ground : takeoff roll
Route In Use	departure : vfr
Flight Plan	None
Aircraft 2
Operator	other
Make Model Name	SA 360 Dauphin
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 3 flight time total : 115 flight time type : 115
ASRS Report	475195
Person 2
Function	flight crew : single pilot
Qualification	pilot : atp
Events
Anomaly	conflict : nmac conflict : airborne critical non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 500 vertical : 300
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

A helicopter announced straight-out departure from frederick municipal (fdk) parallel to runway 30. They were located to the left of the departure end of fdr runway 30. I was in a socata TB9 on a takeoff roll on runway 30 (about 1/3 - 1/2 way down runway). I acknowledged on unicom/CTAF. The helicopter was lifting off away from me. I overflew him to the right and above until his airspeed caused him to pass from under and away. At closest point, I was about 500 ft to right horizontal, and 300 ft above. I should have announced that I was already rolling and would hold course until he was clear. There was no danger of collision at any time. In my opinion, not enough room to abort takeoff.

Original NASA ASRS Text

Title: UNCTLED ARPT TFC CONFLICT BTWN A HELI AND FIXED WING ACFT DURING TKOF.

Narrative: A HELI ANNOUNCED STRAIGHT-OUT DEP FROM FREDERICK MUNICIPAL (FDK) PARALLEL TO RWY 30. THEY WERE LOCATED TO THE L OF THE DEP END OF FDR RWY 30. I WAS IN A SOCATA TB9 ON A TKOF ROLL ON RWY 30 (ABOUT 1/3 - 1/2 WAY DOWN RWY). I ACKNOWLEDGED ON UNICOM/CTAF. THE HELI WAS LIFTING OFF AWAY FROM ME. I OVERFLEW HIM TO THE R AND ABOVE UNTIL HIS AIRSPD CAUSED HIM TO PASS FROM UNDER AND AWAY. AT CLOSEST POINT, I WAS ABOUT 500 FT TO R HORIZ, AND 300 FT ABOVE. I SHOULD HAVE ANNOUNCED THAT I WAS ALREADY ROLLING AND WOULD HOLD COURSE UNTIL HE WAS CLR. THERE WAS NO DANGER OF COLLISION AT ANY TIME. IN MY OPINION, NOT ENOUGH ROOM TO ABORT TKOF.

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.