Wake turbulence spacing between air carrier X and air carrier Y.

Attributes
ACN	281135
Time
Date	199408
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ewr
State Reference	NJ
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : ewr tower : roa
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B727 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	281135
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Events
Anomaly	non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error other

Narrative:

Air carrier Y called ewr 4 1/2 mi behind a H/DC10, air carrier X. 7110.65 says 5 mi, now why can't N90 do that. Tonight I saw at least 5 more aircraft that didn't get the required IFR wake turbulence separation. As I have written in the past, this problem is an everyday thing.

Original NASA ASRS Text

Title: WAKE TURB SPACING BTWN ACR X AND ACR Y.

Narrative: ACR Y CALLED EWR 4 1/2 MI BEHIND A H/DC10, ACR X. 7110.65 SAYS 5 MI, NOW WHY CAN'T N90 DO THAT. TONIGHT I SAW AT LEAST 5 MORE ACFT THAT DIDN'T GET THE REQUIRED IFR WAKE TURB SEPARATION. AS I HAVE WRITTEN IN THE PAST, THIS PROB IS AN EVERYDAY THING.

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.