Close proximity air carrier-light transport flight of 2 fgt's.

Attributes
ACN	102498
Time
Date	198901
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : yum
State Reference	AZ
Altitude	msl bound lower : 3500 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : yum
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Flight Plan	VFR
Aircraft 2
Operator	other
Make Model Name	Fighter
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 190 flight time total : 17500
ASRS Report	102498
Person 2
Affiliation	government : military
Function	flight crew : single pilot
Qualification	pilot : military
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 200 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

After departing runway 8, we were climbing on course in communication and radar contact with yuma departure control. While passing through 3500' MSL I noted a high speed aircraft appear just below the left wing tip. The aircraft filled the left side cockpit window completely. Almost immediately a second aircraft appeared from below the left wing. The first aircraft, an fgt, passed about 200' ahead of us under our aircraft at an altitude we estimated to be 50' below us. We immediately asked departure if they had the traffic that had just passed us. They replied that they had no returns in our area. We informed them of the incident and they replied that the fighters did not have their xponders on. A few mins later departure had contacted the pilots. They said they had us in sight. I asked if that was so, how could they pass so close to us? Departure replied that they couldn't get a reason.

Original NASA ASRS Text

Title: CLOSE PROX ACR-LTT FLT OF 2 FGT'S.

Narrative: AFTER DEPARTING RWY 8, WE WERE CLBING ON COURSE IN COM AND RADAR CONTACT WITH YUMA DEP CTL. WHILE PASSING THROUGH 3500' MSL I NOTED A HIGH SPD ACFT APPEAR JUST BELOW THE LEFT WING TIP. THE ACFT FILLED THE LEFT SIDE COCKPIT WINDOW COMPLETELY. ALMOST IMMEDIATELY A SECOND ACFT APPEARED FROM BELOW THE LEFT WING. THE FIRST ACFT, AN FGT, PASSED ABOUT 200' AHEAD OF US UNDER OUR ACFT AT AN ALT WE ESTIMATED TO BE 50' BELOW US. WE IMMEDIATELY ASKED DEP IF THEY HAD THE TFC THAT HAD JUST PASSED US. THEY REPLIED THAT THEY HAD NO RETURNS IN OUR AREA. WE INFORMED THEM OF THE INCIDENT AND THEY REPLIED THAT THE FIGHTERS DID NOT HAVE THEIR XPONDERS ON. A FEW MINS LATER DEP HAD CONTACTED THE PLTS. THEY SAID THEY HAD US IN SIGHT. I ASKED IF THAT WAS SO, HOW COULD THEY PASS SO CLOSE TO US? DEP REPLIED THAT THEY COULDN'T GET A REASON.

Data retrieved from NASA's ASRS site as of August 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.