Small transport X non adherence to ATC clearance clearance interpretation. Unauthorized climb from assigned altitude had less than standard separation from air carrier Y. Pilot deviation.

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Attributes
ACN	265982
Time
Date	199403
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 13
ASRS Report	265982
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated
Miss Distance	horizontal : 1500 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

An adjacent sector radar controller instructed small transport X to fly heading 240 degrees and join the dfw 262 degree radial. X started a climb to FL240 instead of flying a heading. He conflicted with air carrier Y nwbound over dfw descending to 5000 ft. I observed X climbing and turned Y further north.

Original NASA ASRS Text

Title: SMT X NON ADHERENCE TO ATC CLRNC CLRNC INTERP. UNAUTH CLB FROM ASSIGNED ALT HAD LTSS FROM ACR Y. PLTDEV.

Narrative: AN ADJACENT SECTOR RADAR CTLR INSTRUCTED SMT X TO FLY HDG 240 DEGS AND JOIN THE DFW 262 DEG RADIAL. X STARTED A CLB TO FL240 INSTEAD OF FLYING A HDG. HE CONFLICTED WITH ACR Y NWBOUND OVER DFW DSNDING TO 5000 FT. I OBSERVED X CLBING AND TURNED Y FURTHER N.

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.