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Phl tower controller and a first officer involved reported the first officer took another aircraft's takeoff clearance.
| Attributes | |
| ACN | 1419007 |
| Time | |
| Date | 201701 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | PHL.Tower |
| State Reference | PA |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Medium Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Route In Use | None |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Medium Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 2 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance Deviation - Track / Heading All Types Ground Incursion Runway |
Narrative:
Aircraft X was in position on runway 8; aircraft Y was in position on runway 9L. I told another aircraft to cross runway 9L at D hold short of runway 8. Then I cleared aircraft X for takeoff on runway 8. Aircraft Y read cleared for takeoff runway 8. I stepped on aircraft X; when telling another aircraft to hold short of taxiway a. Aircraft X called again saying they were cleared for takeoff on runway 8 and I said affirmative. Then looked at 9L and saw aircraft Y already rolling and almost airborne. Once he was airborne; I provided the visual separation and told him to fly runway heading and then I turned aircraft X to 050 heading. I should have listened for the bad readback.
Original NASA ASRS Text
Title: PHL Tower Controller and a First Officer involved reported the First Officer took another aircraft's takeoff clearance.
Narrative: Aircraft X was in position on runway 8; Aircraft Y was in position on runway 9L. I told another aircraft to cross runway 9L at D hold short of runway 8. Then I cleared Aircraft X for takeoff on runway 8. Aircraft Y read cleared for takeoff runway 8. I stepped on Aircraft X; when telling another aircraft to hold short of taxiway A. Aircraft X called again saying they were cleared for takeoff on Runway 8 and I said affirmative. Then looked at 9L and saw Aircraft Y already rolling and almost airborne. Once he was airborne; I provided the visual separation and told him to fly runway heading and then I turned Aircraft X to 050 heading. I should have listened for the bad readback.
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.