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An small transport turning to intercept the ILS final to runway 23L at cle, oh, encounters wake turbulence. The encounter rolls the small transport into a 200 degree bank and causes a 300 ft loss of altitude.
| Attributes | |
| ACN | 380117 |
| Time | |
| Date | 199709 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cle |
| State Reference | OH |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cle |
| Operator | general aviation : corporate |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent : approach |
| Route In Use | approach : straight in |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 50 flight time total : 3500 flight time type : 400 |
| ASRS Report | 380117 |
| Person 2 | |
| Affiliation | Other |
| Function | observation : passenger |
| Qualification | other other : other |
| Events | |
| Anomaly | other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : returned to intended course or assigned course |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Flight conditions were IMC and a very smooth ride. As I was intercepting the ILS inbound, a slight r-hand bank, I lost complete control of the aircraft and it snapped into approximately 200 degrees r-hand bank. It felt as if the right wing broke off. After recovering it was all I could do to stay on the ILS and I did not report this to ATC. ATC was very busy, and a lot of traffic at the time. They were asking me to keep my speed up and I think they turned me on too close behind a heavy jet. Callback conversation with reporter revealed the following information: reporter participated in the structured wake turbulence callback study. Reporter was greatly shocked when he encountered this wake. He was complacent as the flight conditions were very smooth. He was IMC and had zero forward visibility. There was no announcement from TRACON of what type of aircraft was in front of him or distance from leading aircraft. When the turbulence struck, the aircraft felt as if the right wing fell off. The bank was sharp and extreme, the aircraft rolled into a 200 degree bank and the aircraft descended 300- 400 ft. Reporter stated it scared him and his passenger to a great degree.
Original NASA ASRS Text
Title: AN SMT TURNING TO INTERCEPT THE ILS FINAL TO RWY 23L AT CLE, OH, ENCOUNTERS WAKE TURB. THE ENCOUNTER ROLLS THE SMT INTO A 200 DEG BANK AND CAUSES A 300 FT LOSS OF ALT.
Narrative: FLT CONDITIONS WERE IMC AND A VERY SMOOTH RIDE. AS I WAS INTERCEPTING THE ILS INBOUND, A SLIGHT R-HAND BANK, I LOST COMPLETE CTL OF THE ACFT AND IT SNAPPED INTO APPROX 200 DEGS R-HAND BANK. IT FELT AS IF THE R WING BROKE OFF. AFTER RECOVERING IT WAS ALL I COULD DO TO STAY ON THE ILS AND I DID NOT RPT THIS TO ATC. ATC WAS VERY BUSY, AND A LOT OF TFC AT THE TIME. THEY WERE ASKING ME TO KEEP MY SPD UP AND I THINK THEY TURNED ME ON TOO CLOSE BEHIND A HVY JET. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR PARTICIPATED IN THE STRUCTURED WAKE TURB CALLBACK STUDY. RPTR WAS GREATLY SHOCKED WHEN HE ENCOUNTERED THIS WAKE. HE WAS COMPLACENT AS THE FLT CONDITIONS WERE VERY SMOOTH. HE WAS IMC AND HAD ZERO FORWARD VISIBILITY. THERE WAS NO ANNOUNCEMENT FROM TRACON OF WHAT TYPE OF ACFT WAS IN FRONT OF HIM OR DISTANCE FROM LEADING ACFT. WHEN THE TURB STRUCK, THE ACFT FELT AS IF THE R WING FELL OFF. THE BANK WAS SHARP AND EXTREME, THE ACFT ROLLED INTO A 200 DEG BANK AND THE ACFT DSNDED 300- 400 FT. RPTR STATED IT SCARED HIM AND HIS PAX TO A GREAT DEGREE.
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.