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Small aircraft Y takeoff on occupied runway had less than standard separation from small aircraft X. Pilot deviation. System error.
| Attributes | |
| ACN | 270598 |
| Time | |
| Date | 199405 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : eyw |
| State Reference | FL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | M-20 B/C Ranger |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller non radar : 3 |
| ASRS Report | 270598 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : ground less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 1200 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Pilot Deviation |
Narrative:
Small aircraft X C172 landed runway 27. I scanned the runway twice and it appeared that X had exited the runway. Small aircraft Y MO20 IFR cleared for takeoff. X questioned why I cleared an aircraft for takeoff while she was on the runway. I scanned the runway again and observed X about 1200 ft separated from the MO20. I asked X not to delay on the runway and X exited the runway prior to Y airborne. I informed X that the M020 was airborne after she had turned left off the runway. It is possible that X was behind the structural poles in the tower cabin attendant which blocked my vision because I scanned the runway twice prior to clearing Y for takeoff.
Original NASA ASRS Text
Title: SMA Y TKOF ON OCCUPIED RWY HAD LTSS FROM SMA X. PLTDEV. SYS ERROR.
Narrative: SMA X C172 LANDED RWY 27. I SCANNED THE RWY TWICE AND IT APPEARED THAT X HAD EXITED THE RWY. SMA Y MO20 IFR CLRED FOR TKOF. X QUESTIONED WHY I CLRED AN ACFT FOR TKOF WHILE SHE WAS ON THE RWY. I SCANNED THE RWY AGAIN AND OBSERVED X ABOUT 1200 FT SEPARATED FROM THE MO20. I ASKED X NOT TO DELAY ON THE RWY AND X EXITED THE RWY PRIOR TO Y AIRBORNE. I INFORMED X THAT THE M020 WAS AIRBORNE AFTER SHE HAD TURNED L OFF THE RWY. IT IS POSSIBLE THAT X WAS BEHIND THE STRUCTURAL POLES IN THE TWR CAB WHICH BLOCKED MY VISION BECAUSE I SCANNED THE RWY TWICE PRIOR TO CLRING Y FOR TKOF.
Data retrieved from NASA's ASRS site as of July 2007 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.