<< >> NASA ASRS Report 512208, May 2001

B737 captain took evasive action during initial departure climb in response to a TCASII RA. Target unknown and not reported by ATC.

Attributes
ACN	512208
Time
Date	200105
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ewr.airport
State Reference	NJ
Altitude	msl single value : 1000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : n90.tracon artcc : mggt.artcc
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Navigation In Use	other
Route In Use	departure sid : ewr 6
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : n90.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 700
ASRS Report	512208
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : nmac non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 300
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

On departure from ewr runway 4L (ewr 6 departure SID), began turn to 060 degrees. After safe turn altitude of 400 ft, contacted departure control and issued 040 degree heading. Began turn to comply. TCASII traffic +300 followed by RA 'monitor vertical speed.' took action to turn away from traffic symbol (left) and decreased climb. Once clear of TCASII alert, resumed issued instructions and reported incident to ZNY.

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Original NASA ASRS Text

Title: B737 CAPT TOOK EVASIVE ACTION DURING INITIAL DEP CLB IN RESPONSE TO A TCASII RA. TARGET UNKNOWN AND NOT RPTED BY ATC.

Narrative: ON DEP FROM EWR RWY 4L (EWR 6 DEP SID), BEGAN TURN TO 060 DEGS. AFTER SAFE TURN ALT OF 400 FT, CONTACTED DEP CTL AND ISSUED 040 DEG HDG. BEGAN TURN TO COMPLY. TCASII TFC +300 FOLLOWED BY RA 'MONITOR VERT SPD.' TOOK ACTION TO TURN AWAY FROM TFC SYMBOL (L) AND DECREASED CLB. ONCE CLR OF TCASII ALERT, RESUMED ISSUED INSTRUCTIONS AND RPTED INCIDENT TO ZNY.

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.