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Ce-560 captain reported losing 250 feet of altitude after encountering wake turbulence on approach to rdu.
| Attributes | |
| ACN | 1542886 |
| Time | |
| Date | 201805 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | RDU.Airport |
| State Reference | NC |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation V/Ultra/Encore (C560) |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Initial Approach |
| Route In Use | Vectors STAR ALDAN ONE RNAV |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Medium Large Transport Low Wing 2 Turbojet Eng |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Flight Engineer Flight Crew Flight Instructor Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 100 Flight Crew Total 22000 Flight Crew Type 1200 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Weather / Turbulence |
Narrative:
On vectors for approach from the aldan one arrival to rdu. Rdu was landing to the north. Level at 4000 feet. VFR day with light to occasional moderate chop at low altitudes. Autopilot was on. During one pretty extreme bump or it almost felt like wake turbulence; the autopilot disconnected and we lost about 250 feet before immediately recovering to 4000 feet. We reengaged the autopilot; approach control didn't say anything. Our plane didn't have TCAS. Approach then called out traffic; (airbus or 737; don't remember) at our 9 - 10 o'clock landing on the parallel. We saw traffic; then figured we must have flown through their wake. It's pretty hot with haze now and difficult to see traffic sometimes. Maybe approach should have called out the traffic sooner.
Original NASA ASRS Text
Title: CE-560 Captain reported losing 250 feet of altitude after encountering wake turbulence on approach to RDU.
Narrative: On vectors for approach from the ALDAN ONE Arrival to RDU. RDU was landing to the north. Level at 4000 feet. VFR day with light to occasional moderate chop at low altitudes. Autopilot was on. During one pretty extreme bump or it almost felt like wake turbulence; the autopilot disconnected and we lost about 250 feet before immediately recovering to 4000 feet. We reengaged the autopilot; Approach Control didn't say anything. Our plane didn't have TCAS. Approach then called out traffic; (Airbus or 737; don't remember) at our 9 - 10 o'clock landing on the parallel. We saw traffic; then figured we must have flown through their wake. It's pretty hot with haze now and difficult to see traffic sometimes. Maybe Approach should have called out the traffic sooner.
Data retrieved from NASA's ASRS site 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.