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Flight crew of an large transport were off course by 110 mi when making a required reporting fix due to surface navigational outages.
| Attributes | |
| ACN | 308054 |
| Time | |
| Date | 199506 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bda |
| State Reference | FO |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mem |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic enroute airway : a3000 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 8900 flight time type : 800 |
| ASRS Report | 308054 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure non adherence : clearance other anomaly other 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:
While navigating on A300 from anu to ewr with omega navigation being used, we called normal position report to ZNY radio at catch intersection via omega coordinates. We were advised that we were 110 NM east of A300 catch intersection. Within several mins, position was confirmed via bda VORTAC. An omega coordinates review showed us on course, thus we realized the omega equipment malfunction/failure. On coordination with ZNY via arinc and company dispatch, we proceeded direct to sea isle on a coordinated altitude. No traffic conflict occurred. Follow-up investigation with company dispatch revealed that 2 omega stations were off the air, and previous incidents that day of the same nature had occurred.
Original NASA ASRS Text
Title: FLC OF AN LGT WERE OFF COURSE BY 110 MI WHEN MAKING A REQUIRED RPTING FIX DUE TO SURFACE NAVIGATIONAL OUTAGES.
Narrative: WHILE NAVING ON A300 FROM ANU TO EWR WITH OMEGA NAV BEING USED, WE CALLED NORMAL POS RPT TO ZNY RADIO AT CATCH INTXN VIA OMEGA COORDINATES. WE WERE ADVISED THAT WE WERE 110 NM E OF A300 CATCH INTXN. WITHIN SEVERAL MINS, POS WAS CONFIRMED VIA BDA VORTAC. AN OMEGA COORDINATES REVIEW SHOWED US ON COURSE, THUS WE REALIZED THE OMEGA EQUIP MALFUNCTION/FAILURE. ON COORD WITH ZNY VIA ARINC AND COMPANY DISPATCH, WE PROCEEDED DIRECT TO SEA ISLE ON A COORDINATED ALT. NO TFC CONFLICT OCCURRED. FOLLOW-UP INVESTIGATION WITH COMPANY DISPATCH REVEALED THAT 2 OMEGA STATIONS WERE OFF THE AIR, AND PREVIOUS INCIDENTS THAT DAY OF THE SAME NATURE HAD OCCURRED.
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.