Dfw tower controller described a possible loss of separation between two aircraft on final approach ...

Attributes
ACN	1349215
Time
Date	201604
Local Time Of Day	1201-1800
Place
Locale Reference	DFW.Tower
State Reference	TX
Environment
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Other / Unknown
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 32
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Narrative:

Aircraft X was on final to runway 36L at dfw while I was working. I heard final monitor key up and slow him up. I realized then that we probably would lose 2.5 miles spacing but had seen other aircraft before his arrival on final and thought for sure I would see him. I was in a relief briefing at the time and during that time when we began to lose the 2.5 miles of separation we could both see both aircraft out the window and let it continue. The previous aircraft got off the runway fine prior to aircraft X landing. The final needs to be monitored more closely by final monitor and not rely on local control getting visual at the last minute. Also I should not have tried to give the position to another controller before this issue was solved.

Original NASA ASRS Text

Title: DFW Tower Controller described a possible loss of separation between two aircraft on final approach to Runway 36L.

Narrative: Aircraft X was on final to runway 36L at DFW while I was working. I heard final monitor key up and slow him up. I realized then that we probably would lose 2.5 miles spacing but had seen other aircraft before his arrival on final and thought for sure I would see him. I was in a relief briefing at the time and during that time when we began to lose the 2.5 miles of separation we could both see both aircraft out the window and let it continue. The previous aircraft got off the runway fine prior to Aircraft X landing. The final needs to be monitored more closely by final monitor and not rely on local control getting visual at the last minute. Also I should not have tried to give the position to another controller before this issue was solved.

Data retrieved from NASA's ASRS site 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.

Dfw tower controller described a possible loss of separation between two aircraft on final approach to runway 36L.