Conflict with small aircraft transiting the departure path.

Attributes
ACN	167519
Time
Date	199101
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iad
State Reference	VA
Altitude	msl bound lower : 5300 msl bound upper : 5800
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iad
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 4000
ASRS Report	167519
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 1200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared takeoff on runway O1L iad. Initial instructions were heading 360 4000'. After we switched to departure, we were instructed to climb to 6000'. I read back 6000' and the controller read back the clearance again and I read it back a second time. When out of 5000' I raised my head and I saw the belly of a white light single aircraft, covering the whole span of our windshield. I immediately told the captain and he initiated evasive action. I would say initially a right turn of about 40 degree but he realized we were still closing, so he increased the bank to between 50 degree and 60 degree. I checked our altitude in the evasive action and we were going through 5300' to 5500' the controller called after we had already evaded the target at about 5400' and instructed us to maintain 5000'. I looked at the altimeter again and we were already going through 5700' at which time the controller came back and instructed us to maintain 6000'. We climbed to 6000' as instructed.

Original NASA ASRS Text

Title: CONFLICT WITH SMA TRANSITING THE DEP PATH.

Narrative: WE WERE CLRED TKOF ON RWY O1L IAD. INITIAL INSTRUCTIONS WERE HDG 360 4000'. AFTER WE SWITCHED TO DEP, WE WERE INSTRUCTED TO CLB TO 6000'. I READ BACK 6000' AND THE CTLR READ BACK THE CLRNC AGAIN AND I READ IT BACK A SEC TIME. WHEN OUT OF 5000' I RAISED MY HEAD AND I SAW THE BELLY OF A WHITE LIGHT SINGLE ACFT, COVERING THE WHOLE SPAN OF OUR WINDSHIELD. I IMMEDIATELY TOLD THE CAPT AND HE INITIATED EVASIVE ACTION. I WOULD SAY INITIALLY A R TURN OF ABOUT 40 DEG BUT HE REALIZED WE WERE STILL CLOSING, SO HE INCREASED THE BANK TO BTWN 50 DEG AND 60 DEG. I CHKED OUR ALT IN THE EVASIVE ACTION AND WE WERE GOING THROUGH 5300' TO 5500' THE CTLR CALLED AFTER WE HAD ALREADY EVADED THE TARGET AT ABOUT 5400' AND INSTRUCTED US TO MAINTAIN 5000'. I LOOKED AT THE ALTIMETER AGAIN AND WE WERE ALREADY GOING THROUGH 5700' AT WHICH TIME THE CTLR CAME BACK AND INSTRUCTED US TO MAINTAIN 6000'. WE CLBED TO 6000' AS INSTRUCTED.

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.