An mdt crew responded to a TCASII 'descend RA' cruising at 4000 ft near hnl.

Attributes
ACN	521914
Time
Date	200108
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : mkk.vortac
State Reference	MI
Altitude	msl single value : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhn.artcc artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zhn.artcc
Operator	general aviation : personal
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 1560 flight time type : 600
ASRS Report	521914
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 70 flight time total : 3900 flight time type : 350
ASRS Report	520957
Events
Anomaly	conflict : airborne critical non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment : tcas
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 6000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Level at 4000 ft MSL on V8 our TCASII gave us a TA which went right to an RA. We descended to 3760 ft to avoid single engine cessna traffic which was less than 1 mi and around 300 ft above and converging. This came with no TA from center. Supplemental information from acn 520957: no advisory from ATC until we asked if traffic in area. He replied traffic 1 mi and 4400 ft.

Original NASA ASRS Text

Title: AN MDT CREW RESPONDED TO A TCASII 'DSND RA' CRUISING AT 4000 FT NEAR HNL.

Narrative: LEVEL AT 4000 FT MSL ON V8 OUR TCASII GAVE US A TA WHICH WENT RIGHT TO AN RA. WE DSNDED TO 3760 FT TO AVOID SINGLE ENG CESSNA TFC WHICH WAS LESS THAN 1 MI AND AROUND 300 FT ABOVE AND CONVERGING. THIS CAME WITH NO TA FROM CTR. SUPPLEMENTAL INFO FROM ACN 520957: NO ADVISORY FROM ATC UNTIL WE ASKED IF TFC IN AREA. HE REPLIED TFC 1 MI AND 4400 FT.

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.