Local controller report regarding separation criteria not adhered to by TRACON.

Attributes
ACN	280276
Time
Date	199408
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ewr
State Reference	NJ
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : n90 tower : ewr
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
ASRS Report	280276
Person 2
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	non adherence : far non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Once again N90 gives ewrt 4 1/2 mi behind a heavy jet and aircraft 2 is faster. As aircraft 1 hits the OM he slows reducing separation. We need 6 mi behind the heavy or 30-40 KTS slower to make it work. It's N90 job to provide separation on final, my job to keep it, which is hard to do when you don't get it to begin with.

Original NASA ASRS Text

Title: LCL CTLR RPT REGARDING SEPARATION CRITERIA NOT ADHERED TO BY TRACON.

Narrative: ONCE AGAIN N90 GIVES EWRT 4 1/2 MI BEHIND A HVY JET AND ACFT 2 IS FASTER. AS ACFT 1 HITS THE OM HE SLOWS REDUCING SEPARATION. WE NEED 6 MI BEHIND THE HVY OR 30-40 KTS SLOWER TO MAKE IT WORK. IT'S N90 JOB TO PROVIDE SEPARATION ON FINAL, MY JOB TO KEEP IT, WHICH IS HARD TO DO WHEN YOU DON'T GET IT TO BEGIN WITH.

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.