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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ATCT local controller cleared an air carrier DH8 for takeoff while a military T38 still on the runway completing his landing rollout. Local controller had anticipated the T38 would clear at taxiway a, but did not ensure the aircraft had cleared the runway.
| Attributes | |
| ACN | 382572 |
| Time | |
| Date | 199710 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ama |
| State Reference | TX |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | other |
| Make Model Name | Talon |
| Operating Under FAR Part | other : other |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar pilot : instrument |
| Experience | controller radar : 20 controller supervisory : 6 flight time total : 2000 |
| ASRS Report | 382572 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | conflict : ground less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 7000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
T38 landed following surveillance approach. Not on my frequency but I did issue landing clearance to radar. I thought the T38 would exit at taxiway a. DH8 was ready for departure. Heavy E3 in pattern. T1 on opposite downwind I anticipated the T38 clearing at taxiway a, he didn't. I cleared the DH8 for takeoff while the T38 was still on the runway. The taxiway where I thought the T38 would clear is 9000 ft from the beginning of the runway. The T38 rolled to the end (an additional 4450 ft). The runway is 13501 ft long. Cause: I failed to ensure runway was clear. Extenuating circumstances: (not excuse) T38 hard to see on ground more than 2 mi from tower while looking toward sun.
Original NASA ASRS Text
Title: ATCT LCL CTLR CLRED AN ACR DH8 FOR TKOF WHILE A MIL T38 STILL ON THE RWY COMPLETING HIS LNDG ROLLOUT. LCL CTLR HAD ANTICIPATED THE T38 WOULD CLR AT TXWY A, BUT DID NOT ENSURE THE ACFT HAD CLRED THE RWY.
Narrative: T38 LANDED FOLLOWING SURVEILLANCE APCH. NOT ON MY FREQ BUT I DID ISSUE LNDG CLRNC TO RADAR. I THOUGHT THE T38 WOULD EXIT AT TXWY A. DH8 WAS READY FOR DEP. HVY E3 IN PATTERN. T1 ON OPPOSITE DOWNWIND I ANTICIPATED THE T38 CLRING AT TXWY A, HE DIDN'T. I CLRED THE DH8 FOR TKOF WHILE THE T38 WAS STILL ON THE RWY. THE TXWY WHERE I THOUGHT THE T38 WOULD CLR IS 9000 FT FROM THE BEGINNING OF THE RWY. THE T38 ROLLED TO THE END (AN ADDITIONAL 4450 FT). THE RWY IS 13501 FT LONG. CAUSE: I FAILED TO ENSURE RWY WAS CLR. EXTENUATING CIRCUMSTANCES: (NOT EXCUSE) T38 HARD TO SEE ON GND MORE THAN 2 MI FROM TWR WHILE LOOKING TOWARD SUN.
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.