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Air carrier flight crew reports difficulty in interpretation of radials used for designated fix due to chart's presentation. Experienced a deviation in course while trying to figure the proper station radial relationship. Problem is relative to J121 from orf, 226 degree radial. Is it from orf or ott on us HI5? Intersection 'weavr' is not on us HI8.
| Attributes | |
| ACN | 118353 |
| Time | |
| Date | 198907 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : cvi |
| State Reference | NC |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other cruise other |
| Route In Use | enroute airway : j121 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 220 flight time total : 5000 flight time type : 600 |
| ASRS Report | 118353 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 250 flight time total : 20000 flight time type : 600 |
| ASRS Report | 117799 |
| Events | |
| Anomaly | inflight encounter : weather non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Chart Or Publication |
| Air Traffic Incident | other |
Narrative:
At weavr intersection, very erratic VOR reception to make turn on J121 south. Thunderstorms in area--poor communication with center (congestion/broken). Also looking at chart hi 5 us very difficult to determine if J121 south is off ott or orf! Ended up slightly off course and did get hold of center. He advised no conflict! Chart at weavr intersection too clustered with information! Supplemental information from acn 117799: cleared cofield cvi to intercept J121 at weavr intersection.
Original NASA ASRS Text
Title: ACR FLT CREW REPORTS DIFFICULTY IN INTERPRETATION OF RADIALS USED FOR DESIGNATED FIX DUE TO CHART'S PRESENTATION. EXPERIENCED A DEVIATION IN COURSE WHILE TRYING TO FIGURE THE PROPER STATION RADIAL RELATIONSHIP. PROBLEM IS RELATIVE TO J121 FROM ORF, 226 DEGREE RADIAL. IS IT FROM ORF OR OTT ON US HI5? INTERSECTION 'WEAVR' IS NOT ON US HI8.
Narrative: AT WEAVR INTXN, VERY ERRATIC VOR RECEPTION TO MAKE TURN ON J121 S. TSTMS IN AREA--POOR COM WITH CENTER (CONGESTION/BROKEN). ALSO LOOKING AT CHART HI 5 US VERY DIFFICULT TO DETERMINE IF J121 S IS OFF OTT OR ORF! ENDED UP SLIGHTLY OFF COURSE AND DID GET HOLD OF CENTER. HE ADVISED NO CONFLICT! CHART AT WEAVR INTXN TOO CLUSTERED WITH INFO! SUPPLEMENTAL INFO FROM ACN 117799: CLRED COFIELD CVI TO INTERCEPT J121 AT WEAVR INTXN.
Data retrieved from NASA's ASRS site as of August 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.