B777 flight crew receives RA during approach to jfk.

Attributes
ACN	555798
Time
Date	200208
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jfk.airport
State Reference	NY
Altitude	msl single value : 2500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 31r
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : n90.tracon
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	555798
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	controller : issued advisory flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 3000 vertical : 300
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Intra Facility Coordination Failure

Narrative:

During ILS approach to runway 31R at jfk, we were informed of traffic at 2500 ft. It was a single engine cessna. As we continued the approach and idented the target visually, we got a TA from the TCASII unit. This eventually turned to an RA. The computer indicated to monitor vertical speed. We continued the approach and noted that the target came within 300 ft vertically and approximately 1/2 mi laterally. I queried the approach controller and he stated that the cessna was off his altitude. After landing, I called and talked to the approach control supervisor. He acknowledged the incident and reaffirmed that the cessna was off his altitude. He also stated that this pattern of having light aircraft cross final approach at 2500 ft was normal procedure. I questioned this, as it appeared to be too close to the final approach course.

Original NASA ASRS Text

Title: B777 FLC RECEIVES RA DURING APCH TO JFK.

Narrative: DURING ILS APCH TO RWY 31R AT JFK, WE WERE INFORMED OF TFC AT 2500 FT. IT WAS A SINGLE ENG CESSNA. AS WE CONTINUED THE APCH AND IDENTED THE TARGET VISUALLY, WE GOT A TA FROM THE TCASII UNIT. THIS EVENTUALLY TURNED TO AN RA. THE COMPUTER INDICATED TO MONITOR VERT SPD. WE CONTINUED THE APCH AND NOTED THAT THE TARGET CAME WITHIN 300 FT VERTLY AND APPROX 1/2 MI LATERALLY. I QUERIED THE APCH CTLR AND HE STATED THAT THE CESSNA WAS OFF HIS ALT. AFTER LNDG, I CALLED AND TALKED TO THE APCH CTL SUPVR. HE ACKNOWLEDGED THE INCIDENT AND REAFFIRMED THAT THE CESSNA WAS OFF HIS ALT. HE ALSO STATED THAT THIS PATTERN OF HAVING LIGHT ACFT CROSS FINAL APCH AT 2500 FT WAS NORMAL PROC. I QUESTIONED THIS, AS IT APPEARED TO BE TOO CLOSE TO THE FINAL APCH COURSE.

Data retrieved from NASA's ASRS site as of July 2007 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.