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Air taxi aircraft, PA31-T, has wake turbulence encounter behind a dash 7 on final approach. ATC had requested him to remain close to allow for more aircraft on approach.
| Attributes | |
| ACN | 363453 |
| Time | |
| Date | 199611 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mgm |
| State Reference | AL |
| Altitude | agl bound lower : 500 agl bound upper : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : mgm |
| Operator | common carrier : air taxi |
| Make Model Name | PA-31T-1 Cheyenne I |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | DHC-7 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing other |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 13000 flight time type : 3500 |
| ASRS Report | 363453 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | inflight encounter other other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
I'm writing in response to callback request for 'wake turbulence reports' study. I was caught in the landing wake of a dash 7 commuter and was turned 90 degrees right to the vertical position and had full opposite aileron and rudder and full power in order to effect recovery. Let me know if you want it for your study. Callback conversation with reporter revealed the following information: he stated that the controller had requested he remain in close behind the dash 7 to accommodate more traffic. Reporter believed the dash 7 to be on GS and remained above that approach. He was quite surprised to encounter the wake turbulence. He realized after the encounter that the dash 7 is a STOL type aircraft and can make a very steep approach.
Original NASA ASRS Text
Title: AIR TAXI ACFT, PA31-T, HAS WAKE TURB ENCOUNTER BEHIND A DASH 7 ON FINAL APCH. ATC HAD REQUESTED HIM TO REMAIN CLOSE TO ALLOW FOR MORE ACFT ON APCH.
Narrative: I'M WRITING IN RESPONSE TO CALLBACK REQUEST FOR 'WAKE TURB RPTS' STUDY. I WAS CAUGHT IN THE LNDG WAKE OF A DASH 7 COMMUTER AND WAS TURNED 90 DEGS R TO THE VERT POS AND HAD FULL OPPOSITE AILERON AND RUDDER AND FULL PWR IN ORDER TO EFFECT RECOVERY. LET ME KNOW IF YOU WANT IT FOR YOUR STUDY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: HE STATED THAT THE CTLR HAD REQUESTED HE REMAIN IN CLOSE BEHIND THE DASH 7 TO ACCOMMODATE MORE TFC. RPTR BELIEVED THE DASH 7 TO BE ON GS AND REMAINED ABOVE THAT APCH. HE WAS QUITE SURPRISED TO ENCOUNTER THE WAKE TURB. HE REALIZED AFTER THE ENCOUNTER THAT THE DASH 7 IS A STOL TYPE ACFT AND CAN MAKE A VERY STEEP APCH.
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.