Crj-200 flight crew reported a TCAS RA at 8;000 feet with an opposite direction small aircraft at 7;...

Attributes
ACN	1463911
Time
Date	201707
Local Time Of Day	0601-1200
Place
Locale Reference	LGA.Airport
State Reference	NY
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 200 ER/LR (CRJ200)
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR HAARP3
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Conflict Airborne Conflict
Miss Distance	Horizontal 0 Vertical 400

Narrative:

After crossing basye at 8;000 ft; as cleared; approximately 10 miles prior to haarp on the HAARP3 arrival into lga; we were advised that a small aircraft would be crossing 500 ft below us from our 1 o'clock position. Both the first officer and I identified it; first with TCAS; then visually. Shortly thereafter we were given a TCAS TA; followed by an RA about 5-10 seconds later. The RA instructions were to monitor vertical speed. Since we were in level flight and had been for a couple minutes; I elected to leave the autopilot engaged. The crossing traffic showed a slight climb and indicated at one point 400 ft separation. We kept visual contact with the aircraft and the TCAS system gave us a 'clear of conflict' aural after passing us. No further issues.

Original NASA ASRS Text

Title: CRJ-200 flight crew reported a TCAS RA at 8;000 feet with an opposite direction small aircraft at 7;500 feet during approach to LGA airport. The RA instruction was to monitor vertical speed and since the aircraft was in level flight no action was taken.

Narrative: After crossing BASYE at 8;000 ft; as cleared; approximately 10 miles prior to HAARP on the HAARP3 arrival into LGA; we were advised that a small aircraft would be crossing 500 ft below us from our 1 o'clock position. Both the FO and I identified it; first with TCAS; then visually. Shortly thereafter we were given a TCAS TA; followed by an RA about 5-10 seconds later. The RA instructions were to monitor vertical speed. Since we were in level flight and had been for a couple minutes; I elected to leave the autopilot engaged. The crossing traffic showed a slight climb and indicated at one point 400 ft separation. We kept visual contact with the aircraft and the TCAS system gave us a 'clear of conflict' aural after passing us. No further issues.

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-200 flight crew reported a TCAS RA at 8;000 feet with an opposite direction small aircraft at 7;500 feet during approach to lga airport. The RA instruction was to monitor vertical speed and since the aircraft was in level flight no action was taken.