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Air carrier captain deviated from assigned heading and altitude after incorrectly operating the aircraft autoplt.
| Attributes | |
| ACN | 204869 |
| Time | |
| Date | 199203 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fmg |
| State Reference | NV |
| Altitude | msl bound lower : 29000 msl bound upper : 33300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa tower : mia |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : private pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 2125 flight time type : 260 |
| ASRS Report | 204869 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 10000 flight time type : 9000 |
| ASRS Report | 204427 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other spatial deviation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were on a radar vector of 065 degree until receiving bonneville VOR. The captain was using the turn knob mode of the autoplt to change ATC directed heading from 060 degree to 065 degree. The turn knob was inadvertently left in a 5 degree bank turn to the right. (The turn knob should have been centered upon reaching desired heading). Both the captain and my attention was directed to reviewing approach plates. The slow turn resulted in a turn off 55 degree before the correction was made. In addition to a correction heading of 060 degree given by ATC, a descent from 330 to 290 was given. The captain disengaged the autoplt and climbed 300 ft. Altitude was immediately corrected.
Original NASA ASRS Text
Title: ACR CAPT DEVIATED FROM ASSIGNED HDG AND ALT AFTER INCORRECTLY OPERATING THE ACFT AUTOPLT.
Narrative: WE WERE ON A RADAR VECTOR OF 065 DEG UNTIL RECEIVING BONNEVILLE VOR. THE CAPT WAS USING THE TURN KNOB MODE OF THE AUTOPLT TO CHANGE ATC DIRECTED HDG FROM 060 DEG TO 065 DEG. THE TURN KNOB WAS INADVERTENTLY LEFT IN A 5 DEG BANK TURN TO THE R. (THE TURN KNOB SHOULD HAVE BEEN CTRED UPON REACHING DESIRED HDG). BOTH THE CAPT AND MY ATTN WAS DIRECTED TO REVIEWING APCH PLATES. THE SLOW TURN RESULTED IN A TURN OFF 55 DEG BEFORE THE CORRECTION WAS MADE. IN ADDITION TO A CORRECTION HDG OF 060 DEG GIVEN BY ATC, A DSCNT FROM 330 TO 290 WAS GIVEN. THE CAPT DISENGAGED THE AUTOPLT AND CLBED 300 FT. ALT WAS IMMEDIATELY CORRECTED.
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.