B737 captain responded to a TCASII RA caused by helicopter sighted in front of him in the airport traffic pattern at the same altitude through which he was climbing.

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Attributes
ACN	507194
Time
Date	200104
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : jnu.airport
State Reference	AK
Altitude	msl single value : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bwi.tower
Operator	common carrier : air carrier
Make Model Name	B737-400
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 270 flight time total : 19050 flight time type : 8050
ASRS Report	507194
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : took precautionary avoidance action
Miss Distance	horizontal : 1000 vertical : 200
Supplementary
Problem Areas	Airspace Structure ATC Human Performance Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

I responded to a TCASII RA immediately on departure from jnu. The traffic was in sight, a helicopter just north of our departure path at about 800 ft. Jnu tower did not advise us of any air traffic on departure. The great number of helicopters in and around the jnu airport in close proximity to jet traffic is an extreme hazard. The helicopter flight paths are too close to the jet departure flight paths.

Original NASA ASRS Text

Title: B737 CAPT RESPONDED TO A TCASII RA CAUSED BY HELI SIGHTED IN FRONT OF HIM IN THE ARPT TFC PATTERN AT THE SAME ALT THROUGH WHICH HE WAS CLBING.

Narrative: I RESPONDED TO A TCASII RA IMMEDIATELY ON DEP FROM JNU. THE TFC WAS IN SIGHT, A HELI JUST N OF OUR DEP PATH AT ABOUT 800 FT. JNU TWR DID NOT ADVISE US OF ANY AIR TFC ON DEP. THE GREAT NUMBER OF HELIS IN AND AROUND THE JNU ARPT IN CLOSE PROX TO JET TFC IS AN EXTREME HAZARD. THE HELI FLT PATHS ARE TOO CLOSE TO THE JET DEP FLT PATHS.

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.