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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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The omega navigation sets on an air carrier large transport had partial failures resulting in an off course landfall.
| Attributes | |
| ACN | 246253 |
| Time | |
| Date | 199307 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : orl |
| State Reference | FL |
| Altitude | msl bound lower : 37000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : atlantic enroute : other oceanic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 246253 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On ground and on departure, omega checks were normal. During climb out, omega status degraded to dead reckoning on a few occasions. An update was accomplished and flight was continued. After approximately 1 hour over water, both omegas degraded again to dead reckoning mode and remained there. ATC was notified, and at coast in we were informed we were 14 NM west of course.
Original NASA ASRS Text
Title: THE OMEGA NAV SETS ON AN ACR LGT HAD PARTIAL FAILURES RESULTING IN AN OFF COURSE LANDFALL.
Narrative: ON GND AND ON DEP, OMEGA CHKS WERE NORMAL. DURING CLBOUT, OMEGA STATUS DEGRADED TO DEAD RECKONING ON A FEW OCCASIONS. AN UPDATE WAS ACCOMPLISHED AND FLT WAS CONTINUED. AFTER APPROX 1 HR OVER WATER, BOTH OMEGAS DEGRADED AGAIN TO DEAD RECKONING MODE AND REMAINED THERE. ATC WAS NOTIFIED, AND AT COAST IN WE WERE INFORMED WE WERE 14 NM W OF COURSE.
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.