Near midair collision.

Attributes
ACN	220158
Time
Date	199208
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : brv airport : iad
State Reference	VA
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Controlling Facilities	tracon : iad
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	departure other departure sid : sid
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 : 6000 flight time type : 100
ASRS Report	220158
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	faa : investigated faa : reviewed incident with flight crew
Miss Distance	horizontal : 100 vertical : 20
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

We were told about traffic departing iad at 6000 ft and 12 O'clock. We looked for that traffic but only saw 12 O'clock traffic at about 8000 ft. Approach didn't have that traffic only air carrier twin turbo at 12 O'clock and 6000. The other traffic descended and came right at us. We told controller and he said to turn to 050 degrees now. We turned off autoplt and turned over 90 degrees bank to right and simultaneously dove to avoid imminent collision. Controllers were still dumbfounded about the occurrence and it is still under investigation.

Original NASA ASRS Text

Title: NMAC.

Narrative: WE WERE TOLD ABOUT TFC DEPARTING IAD AT 6000 FT AND 12 O'CLOCK. WE LOOKED FOR THAT TFC BUT ONLY SAW 12 O'CLOCK TFC AT ABOUT 8000 FT. APCH DIDN'T HAVE THAT TFC ONLY ACR TWIN TURBO AT 12 O'CLOCK AND 6000. THE OTHER TFC DSNDED AND CAME RIGHT AT US. WE TOLD CTLR AND HE SAID TO TURN TO 050 DEGS NOW. WE TURNED OFF AUTOPLT AND TURNED OVER 90 DEGS BANK TO R AND SIMULTANEOUSLY DOVE TO AVOID IMMINENT COLLISION. CTLRS WERE STILL DUMBFOUNDED ABOUT THE OCCURRENCE AND IT IS STILL UNDER INVESTIGATION.

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.