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Instructor pilot with a student does not hear hold short instructions from tower and makes an unauthorized takeoff.
| Attributes | |
| ACN | 420390 |
| Time | |
| Date | 199811 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ffz airport : ffz |
| State Reference | AZ |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Flight Phase | climbout : takeoff |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot instruction : instructor |
| Qualification | pilot : cfi pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 1400 flight time type : 500 |
| ASRS Report | 420390 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot instruction : trainee |
| Qualification | pilot : student |
| Events | |
| Anomaly | incursion : runway non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Requested takeoff clearance from tower. Radio traffic was very busy at the time. Tower may have issued a hold short instruction which, due to garbling of the transmission, was misinterped, thinking we had a takeoff clearance. The hold short instruction was not read back. Tower later said we were told to 'hold short' and we replied we did not read back a 'hold short,' indicating that we never realized the instruction was given.
Original NASA ASRS Text
Title: INSTRUCTOR PLT WITH A STUDENT DOES NOT HEAR HOLD SHORT INSTRUCTIONS FROM TWR AND MAKES AN UNAUTH TKOF.
Narrative: REQUESTED TKOF CLRNC FROM TWR. RADIO TFC WAS VERY BUSY AT THE TIME. TWR MAY HAVE ISSUED A HOLD SHORT INSTRUCTION WHICH, DUE TO GARBLING OF THE XMISSION, WAS MISINTERPED, THINKING WE HAD A TKOF CLRNC. THE HOLD SHORT INSTRUCTION WAS NOT READ BACK. TWR LATER SAID WE WERE TOLD TO 'HOLD SHORT' AND WE REPLIED WE DID NOT READ BACK A 'HOLD SHORT,' INDICATING THAT WE NEVER REALIZED THE INSTRUCTION WAS GIVEN.
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.