Near midair collision.

Attributes
ACN	267581
Time
Date	199403
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bdl
State Reference	CT
Altitude	msl bound lower : 10000 msl bound upper : 10750
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bdl
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 25 flight time total : 8905 flight time type : 2700
ASRS Report	267581
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac non adherence : clearance non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 500
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

We were approaching bradley international airport from approximately 20 NM away in clear WX at 10000 ft and 245 KIAS. The autoplt was on and the first officer was the PF. We noticed traffic on the TCASII approaching from below. This rapidly turned into a TCASII RA at which time the first officer disconnected the autoplt and initiated a climb to put the ivsi needle into the 3 green dots indicated at the top of the ivsi scale (the rest was indicating red). We climbed 750 ft to 10750 ft and after the conflict was over, immediately began a descent back to 10000 ft MSL. While descending back to 10000 ft, I, the captain, told bradley approach of our evasive action and asked approach control if they had 'seen' any traffic. The controller said no, and then said something to the effect of 'VFR traffic 6 O'clock no factor.' I then made a brief announcement to the passenger. The seat belt sign was on and no injuries were reported. The remaining flight was uneventful. We never did see the intruder aircraft but the first officer felt it passed 500 ft below us.

Original NASA ASRS Text

Title: NMAC.

Narrative: WE WERE APCHING BRADLEY INTL ARPT FROM APPROX 20 NM AWAY IN CLR WX AT 10000 FT AND 245 KIAS. THE AUTOPLT WAS ON AND THE FO WAS THE PF. WE NOTICED TFC ON THE TCASII APCHING FROM BELOW. THIS RAPIDLY TURNED INTO A TCASII RA AT WHICH TIME THE FO DISCONNECTED THE AUTOPLT AND INITIATED A CLB TO PUT THE IVSI NEEDLE INTO THE 3 GREEN DOTS INDICATED AT THE TOP OF THE IVSI SCALE (THE REST WAS INDICATING RED). WE CLBED 750 FT TO 10750 FT AND AFTER THE CONFLICT WAS OVER, IMMEDIATELY BEGAN A DSCNT BACK TO 10000 FT MSL. WHILE DSNDING BACK TO 10000 FT, I, THE CAPT, TOLD BRADLEY APCH OF OUR EVASIVE ACTION AND ASKED APCH CTL IF THEY HAD 'SEEN' ANY TFC. THE CTLR SAID NO, AND THEN SAID SOMETHING TO THE EFFECT OF 'VFR TFC 6 O'CLOCK NO FACTOR.' I THEN MADE A BRIEF ANNOUNCEMENT TO THE PAX. THE SEAT BELT SIGN WAS ON AND NO INJURIES WERE RPTED. THE REMAINING FLT WAS UNEVENTFUL. WE NEVER DID SEE THE INTRUDER ACFT BUT THE FO FELT IT PASSED 500 FT BELOW US.

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.