 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Lex local controller reports of an operational error due to lack of runway distance between an arrival and a departure.
| Attributes | |
| ACN | 1173316 |
| Time | |
| Date | 201405 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LEX.Airport |
| State Reference | KY |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Medium Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Landing |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Medium Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
I was on the local position with a cessna in the pattern and aircraft X cleared to land runway 22 on a visual approach. A departing aircraft Y pulled up the runway and reported ready for takeoff. Aircraft X was the next aircraft cleared to land and was 3 1/2 miles from the runway when I cleared aircraft Y for takeoff; giving him the position of aircraft X. This normally would have worked without any problems; however; aircraft Y took an unexpected lengthy time to begin his takeoff roll. To add to the issue; the arriving aircraft X was going faster than expected. I told aircraft Y no delay and he seemed to still take longer than normal to begin rolling. When aircraft X crossed the runway threshold; aircraft Y was airborne approximately 5;000 feet down the runway. About 1;000 feet short of the 6;000 feet same runway separation requirement. I did not send aircraft X around because I felt a safer situation would result if I allowed the aircraft X to continue his landing instead of having two aircraft departing the same direction in close proximity to one another. Aircraft X landed with no problems and aircraft Y was switched to departure.I could have asked aircraft Y's pilot if he would be able to accept and immediate take off; however that would have required even more time for his decision and response.
Original NASA ASRS Text
Title: LEX Local Controller reports of an operational error due to lack of runway distance between an arrival and a departure.
Narrative: I was on the Local Position with a Cessna in the pattern and Aircraft X cleared to land RWY 22 on a visual approach. A departing Aircraft Y pulled up the runway and reported ready for takeoff. Aircraft X was the next aircraft cleared to land and was 3 1/2 miles from the runway when I cleared Aircraft Y for takeoff; giving him the position of Aircraft X. This normally would have worked without any problems; however; Aircraft Y took an unexpected lengthy time to begin his takeoff roll. To add to the issue; the arriving Aircraft X was going faster than expected. I told Aircraft Y no delay and he seemed to still take longer than normal to begin rolling. When Aircraft X crossed the runway threshold; Aircraft Y was airborne approximately 5;000 feet down the runway. About 1;000 feet short of the 6;000 feet same runway separation requirement. I did not send Aircraft X around because I felt a safer situation would result if I allowed the Aircraft X to continue his landing instead of having two aircraft departing the same direction in close proximity to one another. Aircraft X landed with no problems and Aircraft Y was switched to Departure.I could have asked Aircraft Y's pilot if he would be able to accept and immediate take off; however that would have required even more time for his decision and response.
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.