A B737 captain did not coordination his WX avoidance maneuvers with tpa.

Attributes
ACN	516680
Time
Date	200107
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tpa.airport
State Reference	FL
Altitude	msl single value : 11000
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Flight Phase	descent : approach
Route In Use	arrival star : n/s
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	516680
Events
Anomaly	inflight encounter : weather non adherence : published procedure non adherence : far non adherence : company policies non adherence : clearance other spatial deviation
Resolutory Action	controller : issued advisory
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During approach to airport, numerous cumulous buildups were in area. One was over jstrm fix. STAR requires turn to 360 degree heading over jstrm. Delayed turn to avoid entering a buildup. As we were turning to 360 degrees, approach controller gave us a heading of 020 degrees followed by a further turn to 040 degrees. After returning to desired track, approach supervisor suggested we review STAR before next tpa arrival. Acknowledged radio call without further embellishment. It was not familiarity with procedure, but desire to avoid a known source of turbulence that prompted this situation. No indication from approach, tower, or ground that the above situation was a problem.

Original NASA ASRS Text

Title: A B737 CAPT DID NOT COORD HIS WX AVOIDANCE MANEUVERS WITH TPA.

Narrative: DURING APCH TO ARPT, NUMEROUS CUMULOUS BUILDUPS WERE IN AREA. ONE WAS OVER JSTRM FIX. STAR REQUIRES TURN TO 360 DEG HDG OVER JSTRM. DELAYED TURN TO AVOID ENTERING A BUILDUP. AS WE WERE TURNING TO 360 DEGS, APCH CTLR GAVE US A HDG OF 020 DEGS FOLLOWED BY A FURTHER TURN TO 040 DEGS. AFTER RETURNING TO DESIRED TRACK, APCH SUPVR SUGGESTED WE REVIEW STAR BEFORE NEXT TPA ARR. ACKNOWLEDGED RADIO CALL WITHOUT FURTHER EMBELLISHMENT. IT WAS NOT FAMILIARITY WITH PROC, BUT DESIRE TO AVOID A KNOWN SOURCE OF TURB THAT PROMPTED THIS SIT. NO INDICATION FROM APCH, TWR, OR GND THAT THE ABOVE SIT WAS A PROB.

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.