TRACON controller described a loss of heavy separation when an emergency aircraft landed on a parall...

Narrative:

Heavy B767 was landing roll runway 25L; an A320 was emergency aircraft inbound 7 miles in trail of the heavy B767; however the A320 was landing inboard runway 25R. Subsequent aircraft an E135 was behind the A320 on a visual approach runway 25L. The A320 landed without incident regarding emergency status; however the wake turbulence minima (5 miles) was not adhered to. I was unaware at the time of this scenario unfolded that separation was lost. Subsequently; I was told later that there was more then 4 but less then 5 miles with A320 landing behind B767. The role I played was that the emergency aircraft land and not be sent around. In hindsight; the heavy; lead aircraft; should have been taken off the approach to avoid any conflict or question as to spacing regarding wake turbulence. This is a task I've performed numerous times without incident.

Original NASA ASRS Text

Title: TRACON Controller described a loss of heavy separation when an emergency aircraft landed on a parallel runway without the required separation.

Narrative: Heavy B767 was landing roll Runway 25L; an A320 was emergency aircraft inbound 7 miles in trail of the Heavy B767; however the A320 was landing inboard Runway 25R. Subsequent aircraft an E135 was behind the A320 on a Visual Approach Runway 25L. The A320 landed without incident regarding emergency status; however the wake turbulence minima (5 miles) was not adhered to. I was unaware at the time of this scenario unfolded that separation was lost. Subsequently; I was told later that there was more then 4 but less then 5 miles with A320 landing behind B767. The role I played was that the emergency aircraft land and not be sent around. In hindsight; the Heavy; lead aircraft; should have been taken off the approach to avoid any conflict or question as to spacing regarding wake turbulence. This is a task I've performed numerous times without incident.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	988598
Time
Date	201201
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Aircraft 1
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Aircraft 2
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Approach Departure
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

TRACON controller described a loss of heavy separation when an emergency aircraft landed on a parallel runway without the required separation.