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Flight crew of a B757 on approach and 5 mi behind an A300 encounters wake turbulence. Autoplt is disconnected and aircraft control regained immediately.
| Attributes | |
| ACN | 428679 |
| Time | |
| Date | 199902 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : cri.vor |
| State Reference | NY |
| Altitude | msl single value : 1500 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 428679 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | inflight encounter : wake turbulence |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : regained aircraft control |
| Supplementary | |
| Problem Areas | Airspace Structure |
| Primary Problem | Airspace Structure |
Narrative:
Our B757, a full 5 mi behind a company A300 (as noted by tower and on the TCASII screen), approximately 160 KIAS on autoplt, received a rapid nose down pitch and accompanying left wing down roll. Immediately disconnected autoplt, input right rudder and nose up, advancing throttles and maintaining altitude. The point of this report is that it is obvious that the requisite 5 mi separation behind a heavy jet is not enough.
Original NASA ASRS Text
Title: FLC OF A B757 ON APCH AND 5 MI BEHIND AN A300 ENCOUNTERS WAKE TURB. AUTOPLT IS DISCONNECTED AND ACFT CTL REGAINED IMMEDIATELY.
Narrative: OUR B757, A FULL 5 MI BEHIND A COMPANY A300 (AS NOTED BY TWR AND ON THE TCASII SCREEN), APPROX 160 KIAS ON AUTOPLT, RECEIVED A RAPID NOSE DOWN PITCH AND ACCOMPANYING L WING DOWN ROLL. IMMEDIATELY DISCONNECTED AUTOPLT, INPUT R RUDDER AND NOSE UP, ADVANCING THROTTLES AND MAINTAINING ALT. THE POINT OF THIS RPT IS THAT IT IS OBVIOUS THAT THE REQUISITE 5 MI SEPARATION BEHIND A HVY JET IS NOT ENOUGH.
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.