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ATC approach control questioned the flight crew of a B737-200 heading some mins after departure and then issued an immediate 140 degree turn in the opposite direction from their destination. ATC did not give an explanation as to the need for the change, or if the flight crew had erred in using the heading they were on.
| Attributes | |
| ACN | 372980 |
| Time | |
| Date | 199707 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : hub airport : hou |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 238 flight time total : 5500 flight time type : 2600 |
| ASRS Report | 372980 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Assigned heading after takeoff from hub was 100 degrees. After/during turn, we switched to departure and flew heading 100 degrees. Approaching efd we were asked for our heading. We said 100 degrees assigned. An immediate turn to 240 degrees was issued (away from intersecting route toward stl, north). An additional heading to west was issued. The only explanation for the deviation from north was our assumption that we either were assigned the wrong initial heading by hub tower or I flew the wrong heading after departure. No loss of separation was noted nor was there a conflict. We never were told of any error or reason for the turns south.
Original NASA ASRS Text
Title: ATC APCH CTL QUESTIONED THE FLC OF A B737-200 HDG SOME MINS AFTER DEP AND THEN ISSUED AN IMMEDIATE 140 DEG TURN IN THE OPPOSITE DIRECTION FROM THEIR DEST. ATC DID NOT GIVE AN EXPLANATION AS TO THE NEED FOR THE CHANGE, OR IF THE FLC HAD ERRED IN USING THE HDG THEY WERE ON.
Narrative: ASSIGNED HDG AFTER TKOF FROM HUB WAS 100 DEGS. AFTER/DURING TURN, WE SWITCHED TO DEP AND FLEW HDG 100 DEGS. APCHING EFD WE WERE ASKED FOR OUR HDG. WE SAID 100 DEGS ASSIGNED. AN IMMEDIATE TURN TO 240 DEGS WAS ISSUED (AWAY FROM INTERSECTING RTE TOWARD STL, N). AN ADDITIONAL HDG TO W WAS ISSUED. THE ONLY EXPLANATION FOR THE DEV FROM N WAS OUR ASSUMPTION THAT WE EITHER WERE ASSIGNED THE WRONG INITIAL HDG BY HUB TWR OR I FLEW THE WRONG HDG AFTER DEP. NO LOSS OF SEPARATION WAS NOTED NOR WAS THERE A CONFLICT. WE NEVER WERE TOLD OF ANY ERROR OR REASON FOR THE TURNS S.
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.