Near midair collision. Flight crew of an ATR72, climbed in response to a TCASII TA on final approach 1 mi outside the ILS FAF. A TCASII target passed 300 ft directly below reporter's aircraft.

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Attributes
ACN	368149
Time
Date	199705
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : vps
State Reference	FL
Altitude	msl bound lower : 1700 msl bound upper : 2000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : vps
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	other other : other pilot : atp pilot : instrument pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 75
ASRS Report	368149
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were flying the ILS 2 runway 19 at vps and were established on both localizer and GS. 1 mi outside of wygee we received a TCASII TA followed by an RA, 'climb, climb.' our climb maneuver resulted in the target passing 300 ft directly under us. Clearing traffic, we continued the approach and landing without further incident. The vps controllers assured us they had no traffic in our position. The target appeared genuine.

Original NASA ASRS Text

Title: NMAC. FLC OF AN ATR72, CLBED IN RESPONSE TO A TCASII TA ON FINAL APCH 1 MI OUTSIDE THE ILS FAF. A TCASII TARGET PASSED 300 FT DIRECTLY BELOW RPTR'S ACFT.

Narrative: WE WERE FLYING THE ILS 2 RWY 19 AT VPS AND WERE ESTABLISHED ON BOTH LOC AND GS. 1 MI OUTSIDE OF WYGEE WE RECEIVED A TCASII TA FOLLOWED BY AN RA, 'CLB, CLB.' OUR CLB MANEUVER RESULTED IN THE TARGET PASSING 300 FT DIRECTLY UNDER US. CLRING TFC, WE CONTINUED THE APCH AND LNDG WITHOUT FURTHER INCIDENT. THE VPS CTLRS ASSURED US THEY HAD NO TFC IN OUR POS. THE TARGET APPEARED GENUINE.

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.