Tower controller cleared a piper seneca for takeoff; not mentioning a business jet on two mile final...

Attributes
ACN	981089
Time
Date	201111
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-34 Seneca Undifferentiated
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Flight Plan	VFR
Aircraft 2
Make Model Name	Falcon 2000
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 1997 Flight Crew Type 562
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical Deviation - Procedural Published Material / Policy

Narrative:

A piper seneca had departed about ten minutes prior to this event and had to return to the airport because one of the aircraft doors was ajar. He taxied back to the runway at intersection charlie and advised ready. By that time; aircraft Y had been cleared to land; but was still over 2 miles out. Thinking that the seneca would be in a hurry to make up for lost time; I cleared him for takeoff without warning him of the traffic on final and opted instead to issue traffic for a VFR helicopter and a VFR airship southwest of the field; because there was a 3rd aircraft - a helicopter - headed for them at the same altitude; which was still talking to another tower erroneously. I was watching this traffic out the window to the southwest when aircraft Y exclaimed; 'going around.'I turned back to the runways and saw that they were over the approach end climbing and the seneca was barely passing taxiway echo on their departure. I issued go-around instructions to aircraft Y. The seneca asked if they were still cleared for takeoff and since they were already airborne; though only a few feet off the ground; I affirmed that they were. I will not assume how fast or slow someone might takeoff and always issue traffic on final that may become an issue if expeditious departure is not executed.

Original NASA ASRS Text

Title: Tower Controller cleared a Piper Seneca for takeoff; not mentioning a business jet on two mile final to the same runway. When the situation did not work; the Controller had been distracted and the arrival initiated and executed a go-around.

Narrative: A Piper Seneca had departed about ten minutes prior to this event and had to return to the airport because one of the aircraft doors was ajar. He taxied back to the runway at Intersection Charlie and advised ready. By that time; aircraft Y had been cleared to land; but was still over 2 miles out. Thinking that the Seneca would be in a hurry to make up for lost time; I cleared him for takeoff without warning him of the traffic on final and opted instead to issue traffic for a VFR helicopter and a VFR airship southwest of the field; because there was a 3rd aircraft - a helicopter - headed for them at the same altitude; which was still talking to another Tower erroneously. I was watching this traffic out the window to the southwest when aircraft Y exclaimed; 'going around.'I turned back to the runways and saw that they were over the approach end climbing and the Seneca was barely passing Taxiway Echo on their departure. I issued go-around instructions to aircraft Y. The Seneca asked if they were still cleared for takeoff and since they were already airborne; though only a few feet off the ground; I affirmed that they were. I will not assume how fast or slow someone might takeoff and always issue traffic on final that may become an issue if expeditious departure is not executed.

Data retrieved from NASA's ASRS site as of April 2012 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.

Tower controller cleared a piper seneca for takeoff; not mentioning a business jet on two mile final to the same runway. When the situation did not work; the controller had been distracted and the arrival initiated and executed a go-around.