Close proximity 2 air carrier-mlgs.

Attributes
ACN	97465
Time
Date	198811
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : aml airport : dca
State Reference	VA
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : iad
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 220 flight time total : 22000 flight time type : 10500
ASRS Report	97465
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 1200
ASRS Report	97341
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 400 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were on an armel arrival into dca, level at 12000'. An air carrier medium large transport Y on departure from iad took a VFR climb through our altitude to 17000'. Dulles approach gave us traffic at 11 O'clock. There was an aircraft in that position who then passed us on our left. Looking back at our 12 O'clock we saw the landing lights of another airplane. This aircraft passed our left side in about a 45 degree bank to his right. He was a little lower and about 400' to the side. We could make out the type of plane from his logo light. When I first saw this traffic, I thought it was an aircraft much further and lower, that had departed dulles. You don't normally see anyone at that altitude with their landing lights still on. Also, I feel the controller must not have monitored the situation after he cleared medium large transport Y for the climb and issued us the traffic. I think based on this experience it would be wise to not allow any VFR climbs at night in a busy area like washington.

Original NASA ASRS Text

Title: CLOSE PROX 2 ACR-MLGS.

Narrative: WE WERE ON AN ARMEL ARR INTO DCA, LEVEL AT 12000'. AN ACR MLG Y ON DEP FROM IAD TOOK A VFR CLB THROUGH OUR ALT TO 17000'. DULLES APCH GAVE US TFC AT 11 O'CLOCK. THERE WAS AN ACFT IN THAT POS WHO THEN PASSED US ON OUR LEFT. LOOKING BACK AT OUR 12 O'CLOCK WE SAW THE LNDG LIGHTS OF ANOTHER AIRPLANE. THIS ACFT PASSED OUR LEFT SIDE IN ABOUT A 45 DEG BANK TO HIS RIGHT. HE WAS A LITTLE LOWER AND ABOUT 400' TO THE SIDE. WE COULD MAKE OUT THE TYPE OF PLANE FROM HIS LOGO LIGHT. WHEN I FIRST SAW THIS TFC, I THOUGHT IT WAS AN ACFT MUCH FURTHER AND LOWER, THAT HAD DEPARTED DULLES. YOU DON'T NORMALLY SEE ANYONE AT THAT ALT WITH THEIR LNDG LIGHTS STILL ON. ALSO, I FEEL THE CTLR MUST NOT HAVE MONITORED THE SITUATION AFTER HE CLRED MLG Y FOR THE CLB AND ISSUED US THE TFC. I THINK BASED ON THIS EXPERIENCE IT WOULD BE WISE TO NOT ALLOW ANY VFR CLBS AT NIGHT IN A BUSY AREA LIKE WASHINGTON.

Data retrieved from NASA's ASRS site as of August 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.