Widebody transport has TCASII RA on approach. Near midair collision.

Attributes
ACN	281380
Time
Date	199408
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : iad
State Reference	VA
Altitude	msl bound lower : 8000 msl bound upper : 8300
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iad
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 185 flight time total : 20000 flight time type : 2500
ASRS Report	281380
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : atp pilot : instrument
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 500 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Departed robrt intersection on 190 degree heading from iad. Approach vectors for ILS runway 1L. Descending from 10000 ft to 5000 ft. At about 8200 ft received a TA followed in about 2 seconds by RA 'climb.' approach called traffic also and recommended left turn. We made a hard left climbing turn as traffic passed off our right wing. We climbed to about 8300 ft during maneuver. Supplemental information from acn 281609: picked up traffic visually. Single engine light aircraft at 8000 ft head on prior to evasive maneuver. Estimate 500 ft lateral separation after evasive action.

Original NASA ASRS Text

Title: WDB HAS TCASII RA ON APCH. NMAC.

Narrative: DEPARTED ROBRT INTXN ON 190 DEG HDG FROM IAD. APCH VECTORS FOR ILS RWY 1L. DSNDING FROM 10000 FT TO 5000 FT. AT ABOUT 8200 FT RECEIVED A TA FOLLOWED IN ABOUT 2 SECONDS BY RA 'CLB.' APCH CALLED TFC ALSO AND RECOMMENDED L TURN. WE MADE A HARD L CLBING TURN AS TFC PASSED OFF OUR R WING. WE CLBED TO ABOUT 8300 FT DURING MANEUVER. SUPPLEMENTAL INFO FROM ACN 281609: PICKED UP TFC VISUALLY. SINGLE ENG LIGHT ACFT AT 8000 FT HEAD ON PRIOR TO EVASIVE MANEUVER. ESTIMATE 500 FT LATERAL SEPARATION AFTER EVASIVE ACTION.

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.