Operational error near midair collision during map by air carrier X.

Attributes
ACN	292326
Time
Date	199412
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pvd
State Reference	RI
Altitude	msl bound lower : 3500 msl bound upper : 3500
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	tracon : pvd
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 2000
ASRS Report	292326
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac inflight encounter other non adherence : clearance non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action flight crew : exited adverse environment
Consequence	Other
Miss Distance	horizontal : 200 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation Operational Error

Narrative:

Descending from 4000-2000 ft on approach to runway 5 at pvd. Extremely high winds reported at field and wind shear alerts being given. Our FMS showed 101 KTS at 3000 ft MSL. Surface winds were down the runway and aircraft were landing at pvd. Approaching 2000 ft MSL our aircraft (captain flying) rapidly lost about 400 ft and we got a wind shear warning from our aircraft computers. Captain executes recovery procedures and starts climbing toward 6000 ft MSL as we had asked for from approach earlier if we went missed approach. Approach control told us to return to 2000 ft because of a traffic conflict. At about the same time we received a TCASII RA and visually saw lights appearing at our 10:30 O'clock position. Captain rolls right and descends to avoid traffic. We divert to bdl. Approach controller later told us it was a cessna 310 he had on top of us and he was going to use our speed differential to separate us on the same approach. He admitted it was not a good idea considering the WX conditions. We probably should have tried to hold 2000 ft but considering the severity of the wind shear and the proximity to the ground, I am not sure an attempt to stay at 2000 ft is so smart. I know that during conditions like we were experiencing that I don't want anybody on top of me while shooting an approach.

Original NASA ASRS Text

Title: OPERROR NMAC DURING MAP BY ACR X.

Narrative: DSNDING FROM 4000-2000 FT ON APCH TO RWY 5 AT PVD. EXTREMELY HIGH WINDS RPTED AT FIELD AND WIND SHEAR ALERTS BEING GIVEN. OUR FMS SHOWED 101 KTS AT 3000 FT MSL. SURFACE WINDS WERE DOWN THE RWY AND ACFT WERE LNDG AT PVD. APCHING 2000 FT MSL OUR ACFT (CAPT FLYING) RAPIDLY LOST ABOUT 400 FT AND WE GOT A WIND SHEAR WARNING FROM OUR ACFT COMPUTERS. CAPT EXECUTES RECOVERY PROCS AND STARTS CLBING TOWARD 6000 FT MSL AS WE HAD ASKED FOR FROM APCH EARLIER IF WE WENT MISSED APCH. APCH CTL TOLD US TO RETURN TO 2000 FT BECAUSE OF A TFC CONFLICT. AT ABOUT THE SAME TIME WE RECEIVED A TCASII RA AND VISUALLY SAW LIGHTS APPEARING AT OUR 10:30 O'CLOCK POS. CAPT ROLLS R AND DSNDS TO AVOID TFC. WE DIVERT TO BDL. APCH CTLR LATER TOLD US IT WAS A CESSNA 310 HE HAD ON TOP OF US AND HE WAS GOING TO USE OUR SPD DIFFERENTIAL TO SEPARATE US ON THE SAME APCH. HE ADMITTED IT WAS NOT A GOOD IDEA CONSIDERING THE WX CONDITIONS. WE PROBABLY SHOULD HAVE TRIED TO HOLD 2000 FT BUT CONSIDERING THE SEVERITY OF THE WIND SHEAR AND THE PROX TO THE GND, I AM NOT SURE AN ATTEMPT TO STAY AT 2000 FT IS SO SMART. I KNOW THAT DURING CONDITIONS LIKE WE WERE EXPERIENCING THAT I DON'T WANT ANYBODY ON TOP OF ME WHILE SHOOTING AN APCH.

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.