Two bna tower controllers describe a loss of runway separation incident between a landing CRJ900 and...

Attributes
ACN	966640
Time
Date	201108
Local Time Of Day	1801-2400
Place
Locale Reference	BNA.Tower
State Reference	TN
Aircraft 1
Make Model Name	MD-90 Series (DC-9-90) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Ground
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Narrative:

Aircraft Y called on the visual approach for 2L. Aircraft Y was told to continue for runway 2L traffic will be in position and departing prior to their arrival; reduce to final approach speed. Aircraft X (had a flow time) was instructed to line up and wait on runway 2L; traffic regional jet on a 3.7 mile final be ready to go. The aircraft that had just arrived was instructed to 'turn right as soon as practical; minimal time on the runway; traffic holding in position and traffic on a three mile final. After observing the aircraft leave the runway aircraft X was told runway 2L fly runway heading cleared for takeoff no delay. Aircraft Y was then told runway 2L cleared to land. Aircraft X was approximately 5;500-6;000 ft down the runway and had started rotation when aircraft Y crossed the threshold line. Be more aware of aircraft type with their performance abilities; also; to be more conservative.

Original NASA ASRS Text

Title: Two BNA Tower Controllers describe a loss of runway separation incident between a landing CRJ900 and a departing MD90; which did not accelerate or rotate as quickly as the Local Controller expected.

Narrative: Aircraft Y called on the visual approach for 2L. Aircraft Y was told to continue for Runway 2L traffic will be in position and departing prior to their arrival; reduce to final approach speed. Aircraft X (had a flow time) was instructed to line up and wait on Runway 2L; traffic regional jet on a 3.7 mile final be ready to go. The aircraft that had just arrived was instructed to 'turn right as soon as practical; minimal time on the runway; traffic holding in position and traffic on a three mile final. After observing the aircraft leave the runway Aircraft X was told Runway 2L fly runway heading cleared for takeoff no delay. Aircraft Y was then told Runway 2L cleared to land. Aircraft X was approximately 5;500-6;000 FT down the runway and had started rotation when Aircraft Y crossed the threshold line. Be more aware of aircraft type with their performance abilities; also; to be more conservative.

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.

Two bna tower controllers describe a loss of runway separation incident between a landing CRJ900 and a departing MD90; which did not accelerate or rotate as quickly as the local controller expected.