 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier MD80 flight crew gets off track during a STAR procedure and the approach controller corrects them. Maintenance was advised that the navigation system had malfunctioned.
| Attributes | |
| ACN | 371990 |
| Time | |
| Date | 199706 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cqy airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 11000 msl bound upper : 11000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 371990 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 371991 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance non adherence : far non adherence : published procedure 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 |
Narrative:
I was PF the cedar creek arrival to dfw, outbound on the cedar creek 307 degree radial using the autoplt on VOR track. Regional controller instructed us to turn 20 degrees left to rejoin the arrival. The captain responded we were tracking right down the center of the radial. Approach said we were way off track from everyone else and turn 20 degrees left. I turned and then the captain tuned up the dfw VOR and inbound radial. We saw a 2 DOT azimuth discrepancy between navigation #1 and navigation #2 while tuned to dfw and cqy and the appropriate radials. There was no time to troubleshoot further as the approach controller vectored and descended us for landing at dfw. After landing the captain wrote up the navigational discrepancy and debriefed maintenance.
Original NASA ASRS Text
Title: AN ACR MD80 FLC GETS OFF TRACK DURING A STAR PROC AND THE APCH CTLR CORRECTS THEM. MAINT WAS ADVISED THAT THE NAV SYS HAD MALFUNCTIONED.
Narrative: I WAS PF THE CEDAR CREEK ARR TO DFW, OUTBOUND ON THE CEDAR CREEK 307 DEG RADIAL USING THE AUTOPLT ON VOR TRACK. REGIONAL CTLR INSTRUCTED US TO TURN 20 DEGS L TO REJOIN THE ARR. THE CAPT RESPONDED WE WERE TRACKING RIGHT DOWN THE CTR OF THE RADIAL. APCH SAID WE WERE WAY OFF TRACK FROM EVERYONE ELSE AND TURN 20 DEGS L. I TURNED AND THEN THE CAPT TUNED UP THE DFW VOR AND INBOUND RADIAL. WE SAW A 2 DOT AZIMUTH DISCREPANCY BTWN NAV #1 AND NAV #2 WHILE TUNED TO DFW AND CQY AND THE APPROPRIATE RADIALS. THERE WAS NO TIME TO TROUBLESHOOT FURTHER AS THE APCH CTLR VECTORED AND DSNDED US FOR LNDG AT DFW. AFTER LNDG THE CAPT WROTE UP THE NAVIGATIONAL DISCREPANCY AND DEBRIEFED MAINT.
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.