Pilot allowed aircraft on autoplt to drift off airway. Approach controller intervened with advisory.

Attributes
ACN	338030
Time
Date	199606
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sli
State Reference	CA
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	M-20 J (201)
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute airway : lax
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	controller military : 4 controller radar : 4 controller supervisory : 4 flight time last 90 days : 14 flight time total : 7350 flight time type : 44
ASRS Report	338030
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On hooded airways practice flight utilizing coupled autoplt. While establishing on V597 after passing sli, I noticed autoplt was slow in correcting for easterly wind allowing aircraft to drift off airway to west. (Autoplt operations satisfactory prior to this time.) received call from socal approach advising of my divergence. I then made appropriate correction -- estimate I was perhaps 2 mi off centerline. In future, I'll be less tolerant of autoplt.

Original NASA ASRS Text

Title: PLT ALLOWED ACFT ON AUTOPLT TO DRIFT OFF AIRWAY. APCH CTLR INTERVENED WITH ADVISORY.

Narrative: ON HOODED AIRWAYS PRACTICE FLT UTILIZING COUPLED AUTOPLT. WHILE ESTABLISHING ON V597 AFTER PASSING SLI, I NOTICED AUTOPLT WAS SLOW IN CORRECTING FOR EASTERLY WIND ALLOWING ACFT TO DRIFT OFF AIRWAY TO W. (AUTOPLT OPS SATISFACTORY PRIOR TO THIS TIME.) RECEIVED CALL FROM SOCAL APCH ADVISING OF MY DIVERGENCE. I THEN MADE APPROPRIATE CORRECTION -- ESTIMATE I WAS PERHAPS 2 MI OFF CTRLINE. IN FUTURE, I'LL BE LESS TOLERANT OF AUTOPLT.

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.