Potential conflict existed between a departure G4 on climb out from valencia, svva, and 2 military EMB314's flying a loose formation. The wing aircraft had his transponder turned off so the G4's TCASII did not detect that aircraft. First officer saw it visually.

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Attributes
ACN	398593
Time
Date	199803
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : svva
State Reference	FO
Altitude	msl bound lower : 7000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : svva
Operator	general aviation : corporate
Make Model Name	Gulfstream IV
Operating Under FAR Part	Part 91
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Embraer Undifferentiated or Other Model
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 123 flight time total : 6869 flight time type : 416
ASRS Report	398593
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation Operational Error other
Situations
ATC Facility	procedure or policy : unspecified
Airport	procedure or policy : unspecified

Narrative:

Our clearance read, 'cleared to dtw, maintain level 12000 ft, flight plan route. Turn right after takeoff.' valencia tower cleared us for takeoff, 'traffic is a military flight.' after takeoff, I cleaned up the airplane after 400 ft AGL and started a r-hand turn. I was climbing at 200 KTS so as to climb above the 8700 ft MSA for our route. After turning about 180 degrees I received a TA. I looked at the navigation display, saw the traffic on the display at 2 O'clock, looked over in that direction, saw traffic, rolled wings level and lowered the nose to slow the climb and get a better view of traffic. Traffic (I believe was an EMB314) passed our right side about 1 mi at our level +/-500 ft. As I turned my head back left to the front windshield, I saw another EMB314 pass by our left side, less than 1 mi, slightly below our altitude. Tower never said anything about a flight of 2 military aircraft and I never thought to ask. Direction and altitude was also not relayed. Looking at TCASII, I saw 1 target and that's all I saw when looking outside. The flight must have been loose with the lead having the transponder on. Next time I will ask some questions when given a TA like this one.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT EXISTED BTWN A DEP G4 ON CLBOUT FROM VALENCIA, SVVA, AND 2 MIL EMB314'S FLYING A LOOSE FORMATION. THE WING ACFT HAD HIS XPONDER TURNED OFF SO THE G4'S TCASII DID NOT DETECT THAT ACFT. FO SAW IT VISUALLY.

Narrative: OUR CLRNC READ, 'CLRED TO DTW, MAINTAIN LEVEL 12000 FT, FLT PLAN RTE. TURN R AFTER TKOF.' VALENCIA TWR CLRED US FOR TKOF, 'TFC IS A MIL FLT.' AFTER TKOF, I CLEANED UP THE AIRPLANE AFTER 400 FT AGL AND STARTED A R-HAND TURN. I WAS CLBING AT 200 KTS SO AS TO CLB ABOVE THE 8700 FT MSA FOR OUR RTE. AFTER TURNING ABOUT 180 DEGS I RECEIVED A TA. I LOOKED AT THE NAV DISPLAY, SAW THE TFC ON THE DISPLAY AT 2 O'CLOCK, LOOKED OVER IN THAT DIRECTION, SAW TFC, ROLLED WINGS LEVEL AND LOWERED THE NOSE TO SLOW THE CLB AND GET A BETTER VIEW OF TFC. TFC (I BELIEVE WAS AN EMB314) PASSED OUR R SIDE ABOUT 1 MI AT OUR LEVEL +/-500 FT. AS I TURNED MY HEAD BACK L TO THE FRONT WINDSHIELD, I SAW ANOTHER EMB314 PASS BY OUR L SIDE, LESS THAN 1 MI, SLIGHTLY BELOW OUR ALT. TWR NEVER SAID ANYTHING ABOUT A FLT OF 2 MIL ACFT AND I NEVER THOUGHT TO ASK. DIRECTION AND ALT WAS ALSO NOT RELAYED. LOOKING AT TCASII, I SAW 1 TARGET AND THAT'S ALL I SAW WHEN LOOKING OUTSIDE. THE FLT MUST HAVE BEEN LOOSE WITH THE LEAD HAVING THE XPONDER ON. NEXT TIME I WILL ASK SOME QUESTIONS WHEN GIVEN A TA LIKE THIS ONE.

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.