Heading track deviation on IAP VOR approach.

Attributes
ACN	251485
Time
Date	199309
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : obk airport : pwk
State Reference	IL
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : pwk
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	descent : approach landing : missed approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 10 flight time total : 550 flight time type : 425
ASRS Report	251485
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	inflight encounter : weather non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance 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:

Cleared for approach to pwk (VOR 16) and handed off to pwk tower. I could see the obk VOR below at 2500 ft through holes in clouds. I was over the top of it when needle on navcom went full deflection. I continued same heading, waiting for needle to return. It did not and finally called missed approach after pwk tower indicated I was off the final approach course. High winds and changes blew me off course. (Pilot in plane behind me having similar problem.) following missed approach, I was given vectors to shoot the approach again with excellent results. I possibly went too far off course before calling a missed approach. Following needle deflection over IAF the needle did not return and I possibly waited too long to identify the event. Due to high and variable winds.

Original NASA ASRS Text

Title: HDG TRACK DEV ON IAP VOR APCH.

Narrative: CLRED FOR APCH TO PWK (VOR 16) AND HANDED OFF TO PWK TWR. I COULD SEE THE OBK VOR BELOW AT 2500 FT THROUGH HOLES IN CLOUDS. I WAS OVER THE TOP OF IT WHEN NEEDLE ON NAVCOM WENT FULL DEFLECTION. I CONTINUED SAME HDG, WAITING FOR NEEDLE TO RETURN. IT DID NOT AND FINALLY CALLED MISSED APCH AFTER PWK TWR INDICATED I WAS OFF THE FINAL APCH COURSE. HIGH WINDS AND CHANGES BLEW ME OFF COURSE. (PLT IN PLANE BEHIND ME HAVING SIMILAR PROB.) FOLLOWING MISSED APCH, I WAS GIVEN VECTORS TO SHOOT THE APCH AGAIN WITH EXCELLENT RESULTS. I POSSIBLY WENT TOO FAR OFF COURSE BEFORE CALLING A MISSED APCH. FOLLOWING NEEDLE DEFLECTION OVER IAF THE NEEDLE DID NOT RETURN AND I POSSIBLY WAITED TOO LONG TO IDENT THE EVENT. DUE TO HIGH AND VARIABLE WINDS.

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.