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An air carrier aircraft holding short of ewr runway 4L entered the runway following a garbled transmission which they misinterpreted was their takeoff clearance after ATC did not respond to their confirming takeoff clearance.
| Attributes | |
| ACN | 1277691 |
| Time | |
| Date | 201507 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | EWR.Airport |
| State Reference | NJ |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Experience | Flight Crew Last 90 Days 183 Flight Crew Type 499 |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 192 Flight Crew Total 649 Flight Crew Type 346 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Ground Incursion Runway |
Narrative:
Flying from ewr. We were number one for takeoff from runway 04L at ewr and holding short of the runway. We heard tower make a radio call clearing an aircraft for takeoff; but the initial call sign was garbled. We paused a moment; no one answered; so we transmitted; '[call sign] cleared for takeoff runway 4L.' tower did not respond or correct us; so we proceeded onto the runway. Shortly thereafter; tower stated that we had not been cleared yet. We replied to him that we had in fact read back that we were cleared for takeoff; but received no correction from him that we weren't. He then stated that we must have been stepped on during that transmission.
Original NASA ASRS Text
Title: An air carrier aircraft holding short of EWR Runway 4L entered the runway following a garbled transmission which they misinterpreted was their takeoff clearance after ATC did not respond to their confirming takeoff clearance.
Narrative: Flying from EWR. We were number one for takeoff from Runway 04L at EWR and holding short of the runway. We heard tower make a radio call clearing an aircraft for takeoff; but the initial call sign was garbled. We paused a moment; no one answered; so we transmitted; '[call sign] cleared for takeoff runway 4L.' Tower did not respond or correct us; so we proceeded onto the runway. Shortly thereafter; tower stated that we had not been cleared yet. We replied to him that we had in fact read back that we were cleared for takeoff; but received no correction from him that we weren't. He then stated that we must have been stepped on during that transmission.
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.