Mlt X non adherence to ATC clearance had less than standard separation from air carrier Y.

Attributes
ACN	155430
Time
Date	199008
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : orl
State Reference	FL
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : orl tower : atl
Operator	other
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	approach : visual
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
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 7 controller radar : 8
ASRS Report	155430
Person 2
Affiliation	government : military
Function	flight crew : captain oversight : pic
Qualification	pilot : military
Events
Anomaly	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 : reviewed incident with flight crew
Miss Distance	horizontal : 9000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Mlt X was on a heading to the orl VOR, descending to 3000'. The aircraft was 3 NM northwest of the VOR when it was issued a clearance for a visibility approach to runway 18L at mco with a restriction to maintain 2500' until south of the orl VOR. Air carrier Y was 7 mi north of the orl VOR southbound at 3000'. When mlt X reached the VOR (orl) it made a hard left turn at 3000' and was converging with air carrier Y. Air carrier Y was issued a heading (right turn) 270 degrees to avoid mlt X, then issued an immediate right turn to 290 degrees. Mlt X then turned back toward mco and completed the approach. Air carrier Y was then turned toward mco and issued an approach clearance. Mlt X pilot was asked later on the phone why he made this maneuver and he had no response. The far's should clarify that a pilot is to advise ATC if he cannot comply with an ATC clearance and the pilot cannot deviate from his assigned route (reverse course) west/O advising ATC.

Original NASA ASRS Text

Title: MLT X NON ADHERENCE TO ATC CLRNC HAD LESS THAN STANDARD SEPARATION FROM ACR Y.

Narrative: MLT X WAS ON A HDG TO THE ORL VOR, DSNDING TO 3000'. THE ACFT WAS 3 NM NW OF THE VOR WHEN IT WAS ISSUED A CLRNC FOR A VIS APCH TO RWY 18L AT MCO WITH A RESTRICTION TO MAINTAIN 2500' UNTIL S OF THE ORL VOR. ACR Y WAS 7 MI N OF THE ORL VOR SBND AT 3000'. WHEN MLT X REACHED THE VOR (ORL) IT MADE A HARD LEFT TURN AT 3000' AND WAS CONVERGING WITH ACR Y. ACR Y WAS ISSUED A HDG (RIGHT TURN) 270 DEGS TO AVOID MLT X, THEN ISSUED AN IMMEDIATE RIGHT TURN TO 290 DEGS. MLT X THEN TURNED BACK TOWARD MCO AND COMPLETED THE APCH. ACR Y WAS THEN TURNED TOWARD MCO AND ISSUED AN APCH CLRNC. MLT X PLT WAS ASKED LATER ON THE PHONE WHY HE MADE THIS MANEUVER AND HE HAD NO RESPONSE. THE FAR'S SHOULD CLARIFY THAT A PLT IS TO ADVISE ATC IF HE CANNOT COMPLY WITH AN ATC CLRNC AND THE PLT CANNOT DEVIATE FROM HIS ASSIGNED RTE (REVERSE COURSE) W/O ADVISING ATC.

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.