Less than standard separation and near midair collision between commuter and corporate aircraft. Pil...

Attributes
ACN	82267
Time
Date	198802
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach descent other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	82267
Person 2
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : clearance non adherence : required legal separation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 400 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We departed dfw as commuter X. We departed runway 31L with a departure heading assigned 240 degrees and altitude assigned 2000'. Upon reaching 2000' and 240 degrees the climb checklist was completed. ATC cleared us to climb to 3000'. During the climb the captain (PNF) called company dispatch with our out and off times. While the captain was off ATC frequency, ATC advised us of a VFR corp Y at 10 O'clock, 4000', descending for ftw. I advised looking for the traffic. ATC then advised us to turn left 170 degrees, maintain 3000'. At that time I saw aircraft Y on a slightly converging course descending through our altitude. I proceeded to turn to the assigned heading of 170 degrees which would turn our aircraft into Y's flight path, but clearing aircraft Y by a safe margin. At this time the captain looked up, saw aircraft Y, and proceeded to turn the aircraft back to the original heading, bringing us that much closer to Y. If ATC instructions had been followed we would have passed well off aircraft Y's tail. Horizontal distance was 300-500'. No other comments were made on the frequency 120.5.

Original NASA ASRS Text

Title: LESS THAN STANDARD SEPARATION AND NMAC BETWEEN COMMUTER AND CORPORATE ACFT. PLT DEVIATION.

Narrative: WE DEPARTED DFW AS COMMUTER X. WE DEPARTED RWY 31L WITH A DEP HDG ASSIGNED 240 DEGS AND ALT ASSIGNED 2000'. UPON REACHING 2000' AND 240 DEGS THE CLB CHKLIST WAS COMPLETED. ATC CLRED US TO CLB TO 3000'. DURING THE CLB THE CAPT (PNF) CALLED COMPANY DISPATCH WITH OUR OUT AND OFF TIMES. WHILE THE CAPT WAS OFF ATC FREQ, ATC ADVISED US OF A VFR CORP Y AT 10 O'CLOCK, 4000', DSNDING FOR FTW. I ADVISED LOOKING FOR THE TFC. ATC THEN ADVISED US TO TURN LEFT 170 DEGS, MAINTAIN 3000'. AT THAT TIME I SAW ACFT Y ON A SLIGHTLY CONVERGING COURSE DSNDING THROUGH OUR ALT. I PROCEEDED TO TURN TO THE ASSIGNED HDG OF 170 DEGS WHICH WOULD TURN OUR ACFT INTO Y'S FLT PATH, BUT CLRING ACFT Y BY A SAFE MARGIN. AT THIS TIME THE CAPT LOOKED UP, SAW ACFT Y, AND PROCEEDED TO TURN THE ACFT BACK TO THE ORIGINAL HDG, BRINGING US THAT MUCH CLOSER TO Y. IF ATC INSTRUCTIONS HAD BEEN FOLLOWED WE WOULD HAVE PASSED WELL OFF ACFT Y'S TAIL. HORIZ DISTANCE WAS 300-500'. NO OTHER COMMENTS WERE MADE ON THE FREQ 120.5.

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.

Less than standard separation and near midair collision between commuter and corporate aircraft. Pilot deviation.