<< >> NASA ASRS Report 350700, October 1996

Super MD80 en route slc on J94 50 mi east onl. Center questioned if on airway or having problems with onl VOR. Slight deviation from centerline. Controller advised on present heading would miss onl by 15 mi. Reclred heading to bff. Balance of flight slc normal.

Attributes
ACN	350700
Time
Date	199610
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : onl
State Reference	NE
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zmp
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute airway : zmp
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	350700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	350538
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While en route to slc on J94, ZMP, 135.87, inquired if we were receiving onl VOR ok. We stated yes, but the needle had been wavering a little. At that moment we were approximately 50 DME approaching the VOR and had about a 35 degree crab to maintain course. ZMP said that with our heading we would miss the VOR by 15 mi. At that time we were making a slight correction but pretty much showed centerline on J94. The controller at that time gave us a heading for scottsbluff VOR. We stated that an aircraft earlier had report problems with onl. The controller checked with 2 other aircraft and they reported receiving onl ok. The controller gave a frequency change but the new controller passed along from the previous controller that no other flts experienced any troubles receiving onl. The flight proceeded without incident and no further VOR problems.

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Original NASA ASRS Text

Title: SUPER MD80 ENRTE SLC ON J94 50 MI E ONL. CTR QUESTIONED IF ON AIRWAY OR HAVING PROBS WITH ONL VOR. SLIGHT DEV FROM CTRLINE. CTLR ADVISED ON PRESENT HDG WOULD MISS ONL BY 15 MI. RECLRED HDG TO BFF. BAL OF FLT SLC NORMAL.

Narrative: WHILE ENRTE TO SLC ON J94, ZMP, 135.87, INQUIRED IF WE WERE RECEIVING ONL VOR OK. WE STATED YES, BUT THE NEEDLE HAD BEEN WAVERING A LITTLE. AT THAT MOMENT WE WERE APPROX 50 DME APCHING THE VOR AND HAD ABOUT A 35 DEG CRAB TO MAINTAIN COURSE. ZMP SAID THAT WITH OUR HDG WE WOULD MISS THE VOR BY 15 MI. AT THAT TIME WE WERE MAKING A SLIGHT CORRECTION BUT PRETTY MUCH SHOWED CTRLINE ON J94. THE CTLR AT THAT TIME GAVE US A HDG FOR SCOTTSBLUFF VOR. WE STATED THAT AN ACFT EARLIER HAD RPT PROBS WITH ONL. THE CTLR CHKED WITH 2 OTHER ACFT AND THEY RPTED RECEIVING ONL OK. THE CTLR GAVE A FREQ CHANGE BUT THE NEW CTLR PASSED ALONG FROM THE PREVIOUS CTLR THAT NO OTHER FLTS EXPERIENCED ANY TROUBLES RECEIVING ONL. THE FLT PROCEEDED WITHOUT INCIDENT AND NO FURTHER VOR PROBS.

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.