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Flight crew of an medium large transport overhshot a course turn due to the autoplt RNAV not turning the aircraft in a timely manner. Reporter was correcting back when ATC intervened to advise of course error.
| Attributes | |
| ACN | 363381 |
| Time | |
| Date | 199703 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : slt |
| State Reference | PA |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute airway : zny |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 4000 flight time type : 1600 |
| ASRS Report | 363381 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe inflight encounter : weather non adherence : clearance other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Autoplt was on. RNAV selected off of captain's side. Aircraft overshot turn at slate run (slt 113.9). Possible deviation from airway. Strong winds at altitude may be contributory. Aircraft was in turn using VOR navigation to return to centerline when center called flight. Used VOR for duration of flight.
Original NASA ASRS Text
Title: FLC OF AN MLG OVERHSHOT A COURSE TURN DUE TO THE AUTOPLT RNAV NOT TURNING THE ACFT IN A TIMELY MANNER. RPTR WAS CORRECTING BACK WHEN ATC INTERVENED TO ADVISE OF COURSE ERROR.
Narrative: AUTOPLT WAS ON. RNAV SELECTED OFF OF CAPT'S SIDE. ACFT OVERSHOT TURN AT SLATE RUN (SLT 113.9). POSSIBLE DEV FROM AIRWAY. STRONG WINDS AT ALT MAY BE CONTRIBUTORY. ACFT WAS IN TURN USING VOR NAV TO RETURN TO CTRLINE WHEN CTR CALLED FLT. USED VOR FOR DURATION OF FLT.
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.