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B737 crew turns left when given a right turn because they expected the left turn.
| Attributes | |
| ACN | 446763 |
| Time | |
| Date | 199908 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : iso.airport |
| State Reference | NC |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 275 flight time total : 9700 flight time type : 1700 |
| ASRS Report | 446763 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 6000 flight time type : 1300 |
| ASRS Report | 446860 |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended or assigned course |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We had been getting shortcuts all night long on our trip from bos to mco. Approximately 25 mi north of kinston we thought ATC had given us 15 degrees left of course for ormond beach when able, when in fact he had given us 15 degrees right of course. We both anticipated getting the 15 degree left shortcut for omn and therefore both thought we had heard the clearance. ATC corrected our wrong turn and didn't say it had caused a problem. Solution: don't anticipate a clearance, don't hear what you want to hear.
Original NASA ASRS Text
Title: B737 CREW TURNS L WHEN GIVEN A R TURN BECAUSE THEY EXPECTED THE L TURN.
Narrative: WE HAD BEEN GETTING SHORTCUTS ALL NIGHT LONG ON OUR TRIP FROM BOS TO MCO. APPROX 25 MI N OF KINSTON WE THOUGHT ATC HAD GIVEN US 15 DEGS L OF COURSE FOR ORMOND BEACH WHEN ABLE, WHEN IN FACT HE HAD GIVEN US 15 DEGS R OF COURSE. WE BOTH ANTICIPATED GETTING THE 15 DEG L SHORTCUT FOR OMN AND THEREFORE BOTH THOUGHT WE HAD HEARD THE CLRNC. ATC CORRECTED OUR WRONG TURN AND DIDN'T SAY IT HAD CAUSED A PROB. SOLUTION: DON'T ANTICIPATE A CLRNC, DON'T HEAR WHAT YOU WANT TO HEAR.
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.