Mem tower local controller reported they had to issue last minute instructions to separate an arrivi...

Narrative:

Aircraft Z was on a visual approach to runway 27; aircraft Y was ready to depart runway 36L; aircraft X was on a visual approach to runway 36L. Aircraft Z was asked to keep his speed up as much as possible. Aircraft X was told to continue and reduce to final approach speed. Aircraft Y was instructed to line up and wait and told about the traffic and when he could expect to depart. Aircraft X was also informed when to expect landing clearance. Once aircraft Z crossed the runway 27 threshold and touched down aircraft Y was cleared for takeoff. Aircraft Y was airborne about midfield when I observed aircraft X initiate a go-around. Aircraft X immediately started a left hand turn; but never verbally communicated a pilot initiated go-around. I instructed aircraft Y to fly runway heading and climb and maintain 5;000 feet so as not to conflict with aircraft X in the left turn. I then instructed aircraft X to turn left heading 270 and climb and maintain 3;000 feet.if I had not waited for aircraft Z to touch down and used the arrival departure window (adw) procedure more effectively aircraft Y would have been further down the runway thus possibly negating the need for aircraft X to initiate a go-around. Also; I could have just waited to depart aircraft Y.

Original NASA ASRS Text

Title: MEM Tower Local Controller reported they had to issue last minute instructions to separate an arriving aircraft which initiated a go-around just as a departure was airborne.

Narrative: Aircraft Z was on a visual approach to Runway 27; Aircraft Y was ready to depart Runway 36L; Aircraft X was on a visual approach to Runway 36L. Aircraft Z was asked to keep his speed up as much as possible. Aircraft X was told to continue and reduce to final approach speed. Aircraft Y was instructed to line up and wait and told about the traffic and when he could expect to depart. Aircraft X was also informed when to expect landing clearance. Once Aircraft Z crossed the Runway 27 threshold and touched down Aircraft Y was cleared for takeoff. Aircraft Y was airborne about midfield when I observed Aircraft X initiate a go-around. Aircraft X immediately started a left hand turn; but never verbally communicated a pilot initiated go-around. I instructed Aircraft Y to fly runway heading and climb and maintain 5;000 feet so as not to conflict with Aircraft X in the left turn. I then instructed Aircraft X to turn left heading 270 and climb and maintain 3;000 feet.If I had not waited for Aircraft Z to touch down and used the Arrival Departure Window (ADW) procedure more effectively Aircraft Y would have been further down the runway thus possibly negating the need for Aircraft X to initiate a go-around. Also; I could have just waited to depart Aircraft Y.

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.

Attributes
ACN	1487721
Time
Date	201710
Local Time Of Day	1201-1800
Place
Locale Reference	MEM.Airport
State Reference	TN
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Widebody Transport
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Ground Incursion Runway

Mem tower local controller reported they had to issue last minute instructions to separate an arriving aircraft which initiated a go-around just as a departure was airborne.