The anatomy of a near midair collision from the perspective of both flight crews and the N90 control...

Attributes
ACN	1254102
Time
Date	201504
Local Time Of Day	1201-1800
Place
Locale Reference	N90.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport Low Wing 2 Recip Eng
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct
Flight Plan	VFR
Person 1
Function	Other / Unknown
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 115 Flight Crew Total 8230 Flight Crew Type 703
Events
Anomaly	Conflict NMAC
Miss Distance	Vertical 200

Narrative:

I was sitting in the cockpit jumpseat at 6000 ft altitude on a heading given by approach control. We first got a TCAS alert. I saw the conflicting aircraft at +200 ft on TCAS. Next we got an resolution advisory (RA) to descend. Captain descended. First officer happened to be on the radio talking to approach control and told the controller we were descending for an RA alert. Controller seemed to know the situation because he said 'aircraft Y is descending' then we got another RA to climb. Right after that the captain saw the conflicting aircraft and made a sharp right turn to avoid. I saw aircraft Y make a sharp right turn also. Conflict avoided.

Original NASA ASRS Text

Title: The anatomy of a NMAC from the perspective of both flight crews and the N90 Controller involved.

Narrative: I was sitting in the cockpit jumpseat at 6000 FT ALT on a heading given by approach control. We first got a TCAS alert. I saw the conflicting aircraft at +200 FT on TCAS. Next we got an Resolution Advisory (RA) to descend. Captain descended. First Officer happened to be on the radio talking to approach control and told the controller we were descending for an RA alert. Controller seemed to know the situation because he said 'Aircraft Y is descending' Then we got another RA to climb. Right after that the captain saw the conflicting aircraft and made a sharp right turn to avoid. I saw Aircraft Y make a sharp right turn also. Conflict avoided.

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.

The anatomy of a near midair collision from the perspective of both flight crews and the N90 controller involved.