Atx pilot of an small transport twin failed to turn inbound during a DME arc approach due to a failed VOR receiver. ATC observed the reporter go through the final and intervened to help him back on course for the approach.

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Attributes
ACN	355750
Time
Date	199612
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lmt
State Reference	OR
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 135
Flight Phase	descent : approach
Route In Use	enroute airway : v122
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	other other : other pilot : atp pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 4950 flight time type : 700
ASRS Report	355750
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : overcame equipment problem 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:

I was en route from medford, or, to klamath falls, or, on V122 at 9000 ft. ZSE cleared me for the VOR DME runway 14 approach via the 13 DME arc. You follow the arc from the 265 degree radial clockwise to the 314 degree radial tracking inbound on the 314 degree radial. I had the #1 obs set for the inbound course (134 degree radial) and was maintaining the arc with the #2 obs. The #1 needle was right where it should have been and I was arcing around at 13 DME. After a little while, ZSE called me back and asked why I hadn't turned inbound on the final approach course. Looking to the #1 needle it was now centered and the to-from indicator showed off. Center vectored me back out and around to the final approach course again. While being vectored, I started troubleshooting the #1 VOR to see why it was no longer working. It turned out to be a popped out circuit breaker. Once reset, the VOR worked fine. I should have been xchking to make sure everything was working, also noting that the radial that I want to intercept is approaching using the #2 VOR.

Original NASA ASRS Text

Title: ATX PLT OF AN SMT TWIN FAILED TO TURN INBOUND DURING A DME ARC APCH DUE TO A FAILED VOR RECEIVER. ATC OBSERVED THE RPTR GO THROUGH THE FINAL AND INTERVENED TO HELP HIM BACK ON COURSE FOR THE APCH.

Narrative: I WAS ENRTE FROM MEDFORD, OR, TO KLAMATH FALLS, OR, ON V122 AT 9000 FT. ZSE CLRED ME FOR THE VOR DME RWY 14 APCH VIA THE 13 DME ARC. YOU FOLLOW THE ARC FROM THE 265 DEG RADIAL CLOCKWISE TO THE 314 DEG RADIAL TRACKING INBOUND ON THE 314 DEG RADIAL. I HAD THE #1 OBS SET FOR THE INBOUND COURSE (134 DEG RADIAL) AND WAS MAINTAINING THE ARC WITH THE #2 OBS. THE #1 NEEDLE WAS RIGHT WHERE IT SHOULD HAVE BEEN AND I WAS ARCING AROUND AT 13 DME. AFTER A LITTLE WHILE, ZSE CALLED ME BACK AND ASKED WHY I HADN'T TURNED INBOUND ON THE FINAL APCH COURSE. LOOKING TO THE #1 NEEDLE IT WAS NOW CTRED AND THE TO-FROM INDICATOR SHOWED OFF. CTR VECTORED ME BACK OUT AND AROUND TO THE FINAL APCH COURSE AGAIN. WHILE BEING VECTORED, I STARTED TROUBLESHOOTING THE #1 VOR TO SEE WHY IT WAS NO LONGER WORKING. IT TURNED OUT TO BE A POPPED OUT CIRCUIT BREAKER. ONCE RESET, THE VOR WORKED FINE. I SHOULD HAVE BEEN XCHKING TO MAKE SURE EVERYTHING WAS WORKING, ALSO NOTING THAT THE RADIAL THAT I WANT TO INTERCEPT IS APCHING USING THE #2 VOR.

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.