A corporate captain approaching tpa had two TCAS RA events within ninety seconds at approximately 10...

Attributes
ACN	884014
Time
Date	201004
Local Time Of Day	1201-1800
Place
Locale Reference	TPA.Airport
State Reference	FL
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Global Express (BD700)
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	SID Dades2
Flight Plan	IFR
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 50 Flight Crew Total 5300 Flight Crew Type 500
Events
Anomaly	Conflict Airborne Conflict
Miss Distance	Horizontal 500 Vertical 300

Narrative:

During the descent into tpa on the Dades2 arrival; we received two RA's within a ninety second interval. Neither aircraft was visually identified. Both aircraft aircraft were at a VFR altitude; but the altitude placed the aircraft in the middle of the cloud layer and through the middle of the SID. Most likely; the aircraft were coming out of lakeland (lal) as part of an aviation event. To avoid this situation in the future and for the event at lal; the FAA should create VFR routes that avoid sids and stars in the central florida area and should require the aircraft to have an active flight plan and be in contact with ATC.

Original NASA ASRS Text

Title: A Corporate Captain approaching TPA had two TCAS RA events within ninety seconds at approximately 10;000'. Aircraft from nearby LAL was the suspected aircraft. Developing standardized arrival/departure corridors was suggested.

Narrative: During the descent into TPA on the Dades2 arrival; we received two RA's within a ninety second interval. Neither aircraft was visually identified. Both aircraft aircraft were at a VFR altitude; but the altitude placed the aircraft in the middle of the cloud layer and through the middle of the SID. Most likely; the aircraft were coming out of Lakeland (LAL) as part of an aviation event. To avoid this situation in the future and for the event at LAL; the FAA should create VFR routes that avoid SIDs and STARs in the central Florida area and should require the aircraft to have an active flight plan and be in contact with ATC.

Data retrieved from NASA's ASRS site as of April 2012 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.

A corporate captain approaching tpa had two TCAS RA events within ninety seconds at approximately 10;000'. Aircraft from nearby lal was the suspected aircraft. Developing standardized arrival/departure corridors was suggested.