B757 flight crew reported an near midair collision with a light aircraft on arrival into ewr.

Attributes
ACN	1382275
Time
Date	201608
Local Time Of Day	0601-1200
Place
Locale Reference	EWR.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 17500 Flight Crew Type 1608
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 4186 Flight Crew Type 3444
Events
Anomaly	ATC Issue All Types Conflict NMAC

Narrative:

On the arrival level at 5000 feet. Got a TCAS RA for 'monitor vertical speed'...visually acquired a small single engine aircraft at our two o'clock position...TCAS was showing him 400 feet above us. No call out from ATC.

Original NASA ASRS Text

Title: B757 flight crew reported an NMAC with a light aircraft on arrival into EWR.

Narrative: On the arrival level at 5000 feet. Got a TCAS RA for 'monitor vertical speed'...visually acquired a small single engine aircraft at our two o'clock position...TCAS was showing him 400 feet above us. No call out from ATC.

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.