<< >> NASA ASRS Report 110128, May 1989

Air carrier Y departed airport and overtook preceding departure resulting in less than standard separation.

Attributes
ACN	110128
Time
Date	198905
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 4500 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 7000 flight time type : 800
ASRS Report	110128
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Newark departure told us to climb to 7000' and while turning left to assigned heading we were told to stop climb at 5000'. I then saw the conflict, an air carrier at 2 O'clock pop in and out of the clouds at a slightly lower altitude less than 1 mi away. Controllers may, or may not have given an additional vector. I cannot remember. It was unknown where the air carrier came from, but I suspect it took of just ahead of us and was slower in its climbout than us. I was on newark departure 119.2 at the time of the event.

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Original NASA ASRS Text

Title: ACR Y DEPARTED ARPT AND OVERTOOK PRECEDING DEP RESULTING IN LESS THAN STANDARD SEPARATION.

Narrative: NEWARK DEP TOLD US TO CLIMB TO 7000' AND WHILE TURNING LEFT TO ASSIGNED HDG WE WERE TOLD TO STOP CLIMB AT 5000'. I THEN SAW THE CONFLICT, AN ACR AT 2 O'CLOCK POP IN AND OUT OF THE CLOUDS AT A SLIGHTLY LOWER ALT LESS THAN 1 MI AWAY. CTLRS MAY, OR MAY NOT HAVE GIVEN AN ADDITIONAL VECTOR. I CANNOT REMEMBER. IT WAS UNKNOWN WHERE THE ACR CAME FROM, BUT I SUSPECT IT TOOK OF JUST AHEAD OF US AND WAS SLOWER IN ITS CLIMBOUT THAN US. I WAS ON NEWARK DEP 119.2 AT THE TIME OF THE EVENT.

Data retrieved from NASA's ASRS site as of August 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.