A 'B190' crew and a 'B735' crew took evasive action during parallel visual approachs.

Attributes
ACN	493583
Time
Date	200011
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : tpa.airport
State Reference	FL
Altitude	msl bound lower : 1900 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : tpa.tracon tower : tpa.tower
Operator	common carrier : air carrier
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Navigation In Use	ils localizer only : 36r
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : tpa.tracon
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 36l other Other
Route In Use	approach : visual arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 100 flight time total : 2800 flight time type : 2500
ASRS Report	493583
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued new clearance
Miss Distance	horizontal : 1300 vertical : 300
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was on the visual approach to runway 36R in tampa, fl. I was on the localizer about 10 NM DME. Approach control asked us to maintain visual separation from a B737 on approach to the left. I reported the traffic in sight. The traffic (a B737) was in a turn for runway 36L. I realized a few moments later that he (B737) was not going to make the turn. I immediately took the controls from my first officer and put the aircraft in a steep descent to approximately 1900 ft. My clearance was 2600 ft until north of macdill AFB. In order to maintain separation I had to deviation from that clearance. The B737 started a climb and a heading of about 090 degrees. I estimated the distance as he flew over us at about 1300 ft. A normal landing was made following the deviation. The probable cause was the B737's failure to intercept the final for runway 36L.

Original NASA ASRS Text

Title: A 'B190' CREW AND A 'B735' CREW TOOK EVASIVE ACTION DURING PARALLEL VISUAL APCHS.

Narrative: I WAS ON THE VISUAL APCH TO RWY 36R IN TAMPA, FL. I WAS ON THE LOC ABOUT 10 NM DME. APCH CTL ASKED US TO MAINTAIN VISUAL SEPARATION FROM A B737 ON APCH TO THE L. I RPTED THE TFC IN SIGHT. THE TFC (A B737) WAS IN A TURN FOR RWY 36L. I REALIZED A FEW MOMENTS LATER THAT HE (B737) WAS NOT GOING TO MAKE THE TURN. I IMMEDIATELY TOOK THE CTLS FROM MY FO AND PUT THE ACFT IN A STEEP DSCNT TO APPROX 1900 FT. MY CLRNC WAS 2600 FT UNTIL N OF MACDILL AFB. IN ORDER TO MAINTAIN SEPARATION I HAD TO DEV FROM THAT CLRNC. THE B737 STARTED A CLB AND A HDG OF ABOUT 090 DEGS. I ESTIMATED THE DISTANCE AS HE FLEW OVER US AT ABOUT 1300 FT. A NORMAL LNDG WAS MADE FOLLOWING THE DEV. THE PROBABLE CAUSE WAS THE B737'S FAILURE TO INTERCEPT THE FINAL FOR RWY 36L.

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.