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An air carrier flight crew in a B727 inadvertently turned off course while changing control of the aircraft.
| Attributes | |
| ACN | 432290 |
| Time | |
| Date | 199903 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : ocs.vortac |
| State Reference | WY |
| Altitude | msl single value : 37000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zlc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute airway : j206.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 70 flight time total : 6100 |
| ASRS Report | 432290 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to intended course |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During a xfer of aircraft control on autoplt, aircraft was in an unnoticed 10 degree left bank turn. Turn was not noticed until approximately 60 degrees off desired heading (navigating on airways, not on vectors). Immediate turn to desired course was initiated. Estimated deviation from course centerline was 10 NM. No conflict existed. Cockpit distraction was probable cause.
Original NASA ASRS Text
Title: AN ACR FLC IN A B727 INADVERTENTLY TURNED OFF COURSE WHILE CHANGING CTL OF THE ACFT.
Narrative: DURING A XFER OF ACFT CTL ON AUTOPLT, ACFT WAS IN AN UNNOTICED 10 DEG L BANK TURN. TURN WAS NOT NOTICED UNTIL APPROX 60 DEGS OFF DESIRED HDG (NAVING ON AIRWAYS, NOT ON VECTORS). IMMEDIATE TURN TO DESIRED COURSE WAS INITIATED. ESTIMATED DEV FROM COURSE CTRLINE WAS 10 NM. NO CONFLICT EXISTED. COCKPIT DISTR WAS PROBABLE CAUSE.
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.