B727 with approach control given speed reduction and heading change, then receives TCASII RA.

Attributes
ACN	330864
Time
Date	199603
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bos
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : cfi pilot : instrument
Experience	flight time total : 10000
ASRS Report	330864
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Primary Problem	Ambiguous

Narrative:

On approach into bos heading 075 degrees given an immediate speed reduction, then a turn to 180 degrees for traffic. Got TCASII 'descend' command but I acquired aircraft visually. Given a turn back to 270 degrees after clear of conflict but then told to stop turn at 360 degrees.

Original NASA ASRS Text

Title: B727 WITH APCH CTL GIVEN SPD REDUCTION AND HDG CHANGE, THEN RECEIVES TCASII RA.

Narrative: ON APCH INTO BOS HDG 075 DEGS GIVEN AN IMMEDIATE SPD REDUCTION, THEN A TURN TO 180 DEGS FOR TFC. GOT TCASII 'DSND' COMMAND BUT I ACQUIRED ACFT VISUALLY. GIVEN A TURN BACK TO 270 DEGS AFTER CLR OF CONFLICT BUT THEN TOLD TO STOP TURN AT 360 DEGS.

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.