Ce-560XL captain reported encountering wake turbulence on approach to jfk in trail of a B757.

Attributes
ACN	1216865
Time
Date	201411
Local Time Of Day	1801-2400
Place
Locale Reference	JFK.Airport
State Reference	NY
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Citation Excel (C560XL)
Operating Under FAR Part	Part 135
Flight Phase	Descent Initial Approach
Route In Use	Vectors Visual Approach
Aircraft 2
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Wake Vortex Encounter

Narrative:

During vectors to runway 22L visual approach we encountered wake turbulence from a preceding 757. The autopilot disconnected; we entered a 30 degree left bank and gained 150 ft in altitude. After recovering I attempted to reengage the autopilot but it would not engage. I advised the pax of the issue as he was concerned. We continued the vector and ATC changed the rwy assignment to 22R visual. We landed without incident. I advised the [chief pilot] on duty of the event. I was subsequently given a min rest overnight and had to [call in] fatigued; and was given 14 hours off duty. Both previous days were 12 hr duty and 5 leg days. We had adequate separation from the 757. I believe the event was caused by prevailing winds pushing the wake into our vector flight path.

Original NASA ASRS Text

Title: CE-560XL Captain reported encountering wake turbulence on approach to JFK in trail of a B757.

Narrative: During vectors to RWY 22L visual approach we encountered wake turbulence from a preceding 757. The autopilot disconnected; we entered a 30 degree left bank and gained 150 ft in altitude. After recovering I attempted to reengage the autopilot but it would not engage. I advised the pax of the issue as he was concerned. We continued the vector and ATC changed the rwy assignment to 22R visual. We landed without incident. I advised the [Chief Pilot] on duty of the event. I was subsequently given a min rest overnight and had to [call in] fatigued; and was given 14 hours off duty. Both previous days were 12 hr duty and 5 leg days. We had adequate separation from the 757. I believe the event was caused by prevailing winds pushing the wake into our vector flight path.

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.