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B767 crew makes late wide turn over fix after discovering that they were in heading select mode instead of LNAV.
| Attributes | |
| ACN | 450360 |
| Time | |
| Date | 199909 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : als.vor |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : edff.artcc tower : mem.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | cruise : level descent : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 210 flight time total : 15000 flight time type : 2000 |
| ASRS Report | 450360 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Due to distraction of crew member change, aircraft was either left in heading select or accidentally selected. Made a wide turn over ALS as descent was initiated. Clearance was direct ALS direct lbe which required about a 70 degree turn, therefore, a wide turn was required. Aircraft was not programmed to make turn till over ALS. No known conflicts. This was a typical 'distraction in the cockpit' 2-MAN aircraft scenario. All pilots were experienced and professional. The aircraft had been on a vector (in heading select mode) and then cleared direct ALS. Either LNAV was never reselected or the heading select button was hit. Error was discovered over ALS and a turn was initiated. Due to speed and winds, the 70 degree turn took aircraft outside of a normal airway. Another factor was the late hour for the crew.
Original NASA ASRS Text
Title: B767 CREW MAKES LATE WIDE TURN OVER FIX AFTER DISCOVERING THAT THEY WERE IN HDG SELECT MODE INSTEAD OF LNAV.
Narrative: DUE TO DISTR OF CREW MEMBER CHANGE, ACFT WAS EITHER LEFT IN HDG SELECT OR ACCIDENTALLY SELECTED. MADE A WIDE TURN OVER ALS AS DSCNT WAS INITIATED. CLRNC WAS DIRECT ALS DIRECT LBE WHICH REQUIRED ABOUT A 70 DEG TURN, THEREFORE, A WIDE TURN WAS REQUIRED. ACFT WAS NOT PROGRAMMED TO MAKE TURN TILL OVER ALS. NO KNOWN CONFLICTS. THIS WAS A TYPICAL 'DISTR IN THE COCKPIT' 2-MAN ACFT SCENARIO. ALL PLTS WERE EXPERIENCED AND PROFESSIONAL. THE ACFT HAD BEEN ON A VECTOR (IN HDG SELECT MODE) AND THEN CLRED DIRECT ALS. EITHER LNAV WAS NEVER RESELECTED OR THE HDG SELECT BUTTON WAS HIT. ERROR WAS DISCOVERED OVER ALS AND A TURN WAS INITIATED. DUE TO SPD AND WINDS, THE 70 DEG TURN TOOK ACFT OUTSIDE OF A NORMAL AIRWAY. ANOTHER FACTOR WAS THE LATE HR FOR THE CREW.
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.