Operation deviation operational error.

Attributes
ACN	288820
Time
Date	199411
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ewr
State Reference	NJ
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : ewr tower : ewr
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Experience	controller military : 3 controller radar : 3
ASRS Report	288820
Events
Anomaly	non adherence : required legal separation non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation Operational Error

Narrative:

A H/B767 was 4 mi final to runway 4R on an ILS approach behind a B757 on a 1 mi final. Loss of separation was caused by a workload too heavy to accommodate the number of aircraft and mi required for standard separation. In addition the approach controller kept the air carrier X on his frequency until the aircraft was 4 mi out, leaving no option available to the tower controller to separate the 2 aircraft. Visual approachs were available but not used by the approach controller.

Original NASA ASRS Text

Title: OP DEV OPERROR.

Narrative: A H/B767 WAS 4 MI FINAL TO RWY 4R ON AN ILS APCH BEHIND A B757 ON A 1 MI FINAL. LOSS OF SEPARATION WAS CAUSED BY A WORKLOAD TOO HVY TO ACCOMMODATE THE NUMBER OF ACFT AND MI REQUIRED FOR STANDARD SEPARATION. IN ADDITION THE APCH CTLR KEPT THE ACR X ON HIS FREQ UNTIL THE ACFT WAS 4 MI OUT, LEAVING NO OPTION AVAILABLE TO THE TWR CTLR TO SEPARATE THE 2 ACFT. VISUAL APCHS WERE AVAILABLE BUT NOT USED BY THE APCH CTLR.

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.