Crj-900 captain reported encountering wake turbulence that resulted in 50 degree left and right bank...

Attributes
ACN	1551444
Time
Date	201806
Local Time Of Day	0601-1200
Place
Locale Reference	JFK.Airport
State Reference	NY
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 129
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter

Narrative:

We were on the ILS runway 22L in jfk outside the final approach fix at 2000 feet; 180kts; [and] flaps were 20 degrees with the autopilot on. Suddenly and very rapidly; the aircraft banked about 45 to 50 degrees to left and then right. I clicked off the autopilot; added power; and climbed slightly; about 50 feet. I asked ATC what kind of aircraft was in front of us on the approach. He said it was a B-777 five miles ahead. I then notified him of the wake turbulence encounter. Since there was no more turbulence encountered; I decided to continue the approach; hand flying it at a slightly higher glide slope. The aircraft landed safely without any further issues. Suggestions: perhaps 5 miles is not enough space for other aircraft flying behind a heavy aircraft.

Original NASA ASRS Text

Title: CRJ-900 Captain reported encountering wake turbulence that resulted in 50 degree left and right banks on approach to JFK five miles in trail of a B777.

Narrative: We were on the ILS runway 22L in JFK outside the final approach fix at 2000 feet; 180kts; [and] flaps were 20 degrees with the autopilot on. Suddenly and very rapidly; the aircraft banked about 45 to 50 degrees to left and then right. I clicked off the autopilot; added power; and climbed slightly; about 50 feet. I asked ATC what kind of aircraft was in front of us on the approach. He said it was a B-777 five miles ahead. I then notified him of the wake turbulence encounter. Since there was no more turbulence encountered; I decided to continue the approach; hand flying it at a slightly higher glide slope. The aircraft landed safely without any further issues. Suggestions: Perhaps 5 miles is not enough space for other aircraft flying behind a heavy aircraft.

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.

Crj-900 captain reported encountering wake turbulence that resulted in 50 degree left and right banks on approach to jfk five miles in trail of a B777.