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Reporter was experiencing scalloping of his direction indicator needle on the acy VOR. Allegedly off course. Center gave heading to proceed direct.
| Attributes | |
| ACN | 144348 |
| Time | |
| Date | 199005 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : acy |
| State Reference | NJ |
| Altitude | msl bound lower : 17000 msl bound upper : 17000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zdc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : cfi pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 180 flight time total : 14500 flight time type : 2500 |
| ASRS Report | 144348 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Acy VOR southwest quadrant courses cause considerable scalloping at 40-15 DME. Condition has persisted for a long time. Normal procedure is just to ignore most needle swings and hold a heading that will average the swings. At about 15 DME southwest ATC advises we are 5 NM off course and issues heading to fly direct. I have personally reported this NAVAID problem on at least three separate occasions.
Original NASA ASRS Text
Title: REPORTER WAS EXPERIENCING SCALLOPING OF HIS DIRECTION INDICATOR NEEDLE ON THE ACY VOR. ALLEGEDLY OFF COURSE. CENTER GAVE HEADING TO PROCEED DIRECT.
Narrative: ACY VOR SW QUADRANT COURSES CAUSE CONSIDERABLE SCALLOPING AT 40-15 DME. CONDITION HAS PERSISTED FOR A LONG TIME. NORMAL PROC IS JUST TO IGNORE MOST NEEDLE SWINGS AND HOLD A HDG THAT WILL AVERAGE THE SWINGS. AT ABOUT 15 DME SW ATC ADVISES WE ARE 5 NM OFF COURSE AND ISSUES HDG TO FLY DIRECT. I HAVE PERSONALLY RPTED THIS NAVAID PROB ON AT LEAST THREE SEPARATE OCCASIONS.
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.