Cessna 172 pilot reported encountering wake turbulence from an opposite direction B787 in sea airspa...

Attributes
ACN	1737573
Time
Date	202003
Local Time Of Day	1201-1800
Place
Locale Reference	S46.TRACON
State Reference	WA
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	None
Aircraft 2
Make Model Name	B787 Dreamliner Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Initial Climb
Flight Plan	IFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Commercial Flight Crew Instrument
Experience	Flight Crew Last 90 Days 1 Flight Crew Total 270 Flight Crew Type 200
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Loss Of Aircraft Control

Narrative:

Upon visual approach to pae noticed a B787 climbing through our altitude approximately three miles in front of us and to our right with lateral separation at approximately 3;000 ft. The B787 was moving opposite to our direction (we were southbound and it was northbound). There was no collision risk. Approximately 90-120 seconds after the B787 passed our right wing; we felt a small bump; followed by a rapid and abrupt uncommanded roll to the left - about 40-45 degrees. The upset was easily recovered. The other pilot in the aircraft (a CFI) and I immediately identified the cause to be wake turbulence from the B787. We were surprised that the wake drifted as far as it did from the track of the aircraft; especially since winds aloft seemed to be moving south to north.

Original NASA ASRS Text

Title: Cessna 172 pilot reported encountering wake turbulence from an opposite direction B787 in SEA airspace.

Narrative: Upon visual approach to PAE noticed a B787 climbing through our altitude approximately three miles in front of us and to our right with lateral separation at approximately 3;000 ft. The B787 was moving opposite to our direction (we were southbound and it was northbound). There was no collision risk. Approximately 90-120 seconds after the B787 passed our right wing; we felt a small bump; followed by a rapid and abrupt uncommanded roll to the left - about 40-45 degrees. The upset was easily recovered. The other pilot in the aircraft (a CFI) and I immediately identified the cause to be wake turbulence from the B787. We were surprised that the wake drifted as far as it did from the track of the aircraft; especially since winds aloft seemed to be moving south to north.

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.

Cessna 172 pilot reported encountering wake turbulence from an opposite direction B787 in sea airspace.