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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier heavy transport deviated from clearance route. Track heading deviation approaching oceanic gateway.
| Attributes | |
| ACN | 100014 |
| Time | |
| Date | 198812 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : yay |
| State Reference | NF |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czqx |
| Operator | common carrier : air carrier |
| Make Model Name | Heavy Transport, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : other oceanic enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 7000 flight time type : 1200 |
| ASRS Report | 100014 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| Publication | Unspecified |
Narrative:
Flight from frankfurt to philadelphia. Omega navigation system seemed to be working very well, as verified by comparison to VOR's in europe and other aircraft contrails on the nat track at the time. When in VOR range of yay I tuned in and set obs to bearing 278 degrees as per commercial chart ca (hi) 3 to use VOR navigation to hit our inbound gateway. The VOR showed us 13 mi right of course, so I corrected as per the VOR. When radar idented by gander center we were 13 mi left of course and immediately corrected back. No other action was necessary or taken. Omega navigation's continued to work very well for the remainder of the trip. Further investigation of the commercial chart ca (hi) 3 showed the yay VOR with identify box and with a course line showing 093 degree right. The other end of the same course line, near the gateway-N53/00.0 W050/00.0 shows a bearing of 278 degrees to yay. This is where the problem occurred. Had I set in the yay 093 degree right (obs set 273 degrees), no deviation from course would have occurred.
Original NASA ASRS Text
Title: ACR HVT DEVIATED FROM CLRNC ROUTE. TRACK HEADING DEVIATION APCHING OCEANIC GATEWAY.
Narrative: FLT FROM FRANKFURT TO PHILADELPHIA. OMEGA NAV SYS SEEMED TO BE WORKING VERY WELL, AS VERIFIED BY COMPARISON TO VOR'S IN EUROPE AND OTHER ACFT CONTRAILS ON THE NAT TRACK AT THE TIME. WHEN IN VOR RANGE OF YAY I TUNED IN AND SET OBS TO BEARING 278 DEGS AS PER COMMERCIAL CHART CA (HI) 3 TO USE VOR NAV TO HIT OUR INBND GATEWAY. THE VOR SHOWED US 13 MI RIGHT OF COURSE, SO I CORRECTED AS PER THE VOR. WHEN RADAR IDENTED BY GANDER CENTER WE WERE 13 MI LEFT OF COURSE AND IMMEDIATELY CORRECTED BACK. NO OTHER ACTION WAS NECESSARY OR TAKEN. OMEGA NAV'S CONTINUED TO WORK VERY WELL FOR THE REMAINDER OF THE TRIP. FURTHER INVESTIGATION OF THE COMMERCIAL CHART CA (HI) 3 SHOWED THE YAY VOR WITH IDENT BOX AND WITH A COURSE LINE SHOWING 093 DEG R. THE OTHER END OF THE SAME COURSE LINE, NEAR THE GATEWAY-N53/00.0 W050/00.0 SHOWS A BEARING OF 278 DEGS TO YAY. THIS IS WHERE THE PROB OCCURRED. HAD I SET IN THE YAY 093 DEG R (OBS SET 273 DEGS), NO DEVIATION FROM COURSE WOULD HAVE OCCURRED.
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.