With issued traffic by bhm, B737 executes a TCASII climb that conflicts with VFR PA32.

Attributes
ACN	520381
Time
Date	200107
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : vuz.vortac
State Reference	LA
Altitude	msl bound lower : 6000 msl bound upper : 6500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bhm.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : bhm.tracon
Operator	general aviation : personal
Make Model Name	PA-32 Cherokee Six/Lance/Saratoga
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	VFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar pilot : instrument
Experience	controller time certified in position1 : 12 flight time total : 2000
ASRS Report	520381
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar aircraft equipment : tcas other controllera
Resolutory Action	controller : issued advisory flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

The B737 was cleared to 6000 ft to avoid conflict with the PA32 at 6500 ft. The PA32 mode C was showing 6300 ft, but the altitude was confirmed. The B737 got an RA from TCASII and climbed through the altitude of the PA32.

Original NASA ASRS Text

Title: WITH ISSUED TFC BY BHM, B737 EXECUTES A TCASII CLB THAT CONFLICTS WITH VFR PA32.

Narrative: THE B737 WAS CLRED TO 6000 FT TO AVOID CONFLICT WITH THE PA32 AT 6500 FT. THE PA32 MODE C WAS SHOWING 6300 FT, BUT THE ALT WAS CONFIRMED. THE B737 GOT AN RA FROM TCASII AND CLBED THROUGH THE ALT OF THE PA32.

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.