BELL206 on descent for landing has near midair collision with another helicopter.

Attributes
ACN	808918
Time
Date	200810
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Jet Ranger/Kiowa/206
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 140 flight time total : 1500 flight time type : 225
ASRS Report	808918
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 100 vertical : 200
Supplementary
Problem Areas	Aircraft Airspace Structure Flight Crew Human Performance Airport
Primary Problem	Ambiguous

Narrative:

I was within about 5 mi of my destination and I had descended to 500 ft to start my pre-landing procedures. The TCAS system on my helicopter was on the MEL and therefore could not give me a traffic warning. I noticed a helicopter descending off my left side and lowered my collective to avoid any incident. In my opinion this was not a reportable incident; I maneuvered to avoid the other aircraft and was not closer than 200 ft to the other aircraft.

Original NASA ASRS Text

Title: BELL206 ON DESCENT FOR LNDG HAS NMAC WITH ANOTHER HELI.

Narrative: I WAS WITHIN ABOUT 5 MI OF MY DEST AND I HAD DSNDED TO 500 FT TO START MY PRE-LNDG PROCS. THE TCAS SYS ON MY HELI WAS ON THE MEL AND THEREFORE COULD NOT GIVE ME A TFC WARNING. I NOTICED A HELI DSNDING OFF MY L SIDE AND LOWERED MY COLLECTIVE TO AVOID ANY INCIDENT. IN MY OPINION THIS WAS NOT A REPORTABLE INCIDENT; I MANEUVERED TO AVOID THE OTHER ACFT AND WAS NOT CLOSER THAN 200 FT TO THE OTHER ACFT.

Data retrieved from NASA's ASRS site as of May 2009 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.