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Small aircraft pilot reported misunderstanding ATC taxi response resulted in taxiway and runway incursions.
| Attributes | |
| ACN | 1675837 |
| Time | |
| Date | 201908 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | PWK.Airport |
| State Reference | IL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Taxi |
| Flight Plan | None |
| Person 1 | |
| Function | Pilot Flying Single Pilot |
| Qualification | Flight Crew Instrument Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 2.3 Flight Crew Total 2378 Flight Crew Type 1498 |
| Events | |
| Anomaly | ATC Issue All Types Aircraft Equipment Problem Less Severe Deviation - Procedural Clearance Ground Incursion Taxiway Ground Incursion Runway |
Narrative:
During engine run-up at the runway 24 hold short line and parallel to the runway; an apparently fouled spark plug caused engine roughness on one magneto. I requested a return to the tie-down area; roughly 100 yards behind me on taxiway bravo. The tower controller responded 'ok' which I interpreted to mean that I could return. I did a u-turn on the taxiway which crossed the hold-short line by roughly 7 or 8 feet; but without any incursion onto the runway. The controller advised me of a 'possible runway incursion' and then cleared me back to the tie-down area. Despite the fact that I thought the turn would remain clear of the hold-short line; I should have waited for more specific instructions; 'ok' is apparently not a clearance. There was no other departing traffic ahead of or behind me and none landing; so safety was not compromised.
Original NASA ASRS Text
Title: Small Aircraft Pilot reported misunderstanding ATC taxi response resulted in taxiway and runway incursions.
Narrative: During engine run-up at the Runway 24 hold short line and parallel to the runway; an apparently fouled spark plug caused engine roughness on one magneto. I requested a return to the tie-down area; roughly 100 yards behind me on Taxiway Bravo. The Tower Controller responded 'OK' which I interpreted to mean that I could return. I did a U-turn on the taxiway which crossed the hold-short line by roughly 7 or 8 feet; but without any incursion onto the runway. The Controller advised me of a 'possible runway incursion' and then cleared me back to the tie-down area. Despite the fact that I thought the turn would remain clear of the hold-short line; I should have waited for more specific instructions; 'OK' is apparently not a clearance. There was no other departing traffic ahead of or behind me and none landing; so safety was not compromised.
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.