Near midair collision between a medium large transport on long final and VFR traffic crossing 500 ft...

Attributes
ACN	318806
Time
Date	199510
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : bos
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	other other : other pilot : flight engineer pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 13000 flight time type : 200
ASRS Report	318806
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	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	Other
Miss Distance	vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While established on the localizer for runway 4R in boston we were told to stop descent and level at 7000 ft for a VFR aircraft under IFR control to cross below us. Controller called out the traffic which we had visually and were told he had us visually. TCASII still gave a RA. We ended up being several hundred ft high on the ILS. This VFR aircraft should have been vectored several mi south of the boston arrival corridor and the TCA.

Original NASA ASRS Text

Title: NMAC BTWN A MLG ON LONG FINAL AND VFR TFC XING 500 FT BELOW.

Narrative: WHILE ESTABLISHED ON THE LOC FOR RWY 4R IN BOSTON WE WERE TOLD TO STOP DSCNT AND LEVEL AT 7000 FT FOR A VFR ACFT UNDER IFR CTL TO CROSS BELOW US. CTLR CALLED OUT THE TFC WHICH WE HAD VISUALLY AND WERE TOLD HE HAD US VISUALLY. TCASII STILL GAVE A RA. WE ENDED UP BEING SEVERAL HUNDRED FT HIGH ON THE ILS. THIS VFR ACFT SHOULD HAVE BEEN VECTORED SEVERAL MI S OF THE BOSTON ARR CORRIDOR AND THE TCA.

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.

Near midair collision between a medium large transport on long final and VFR traffic crossing 500 ft below.