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Air carrier captain reported pavement depression necessitated excessive thrust application to move aircraft at bos airport.
| Attributes | |
| ACN | 1653926 |
| Time | |
| Date | 201906 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | BOS.Airport |
| State Reference | MA |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 253 |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Ground Event / Encounter Other / Unknown |
Narrative:
After pushback; we were cleared by ramp control to taxi to spot 7 and contact ground control. Prior to reaching spot 7; we were unable to make contact with ground control and had to stop at the assigned spot. Once contact was established; ground control cleared us to taxi. We verified the area was clear and I attempted to taxi forward. However; the aircraft would not move forward even with the power at 40% N1 for several seconds. We verified the brakes were released and tried again; with the same result. We were apparently stuck in a depression in the pavement and; since we were reasonably certain the area around us was clear; I increased power to 50% N1; in excess of the aom (aircraft operation manual) maximum of 40%; to get the aircraft moving. The flight continued safely with no further issues.
Original NASA ASRS Text
Title: Air carrier Captain reported pavement depression necessitated excessive thrust application to move aircraft at BOS airport.
Narrative: After pushback; we were cleared by Ramp Control to taxi to Spot 7 and contact Ground Control. Prior to reaching Spot 7; we were unable to make contact with Ground Control and had to stop at the assigned spot. Once contact was established; Ground Control cleared us to taxi. We verified the area was clear and I attempted to taxi forward. However; the aircraft would not move forward even with the power at 40% N1 for several seconds. We verified the brakes were released and tried again; with the same result. We were apparently stuck in a depression in the pavement and; since we were reasonably certain the area around us was clear; I increased power to 50% N1; in excess of the AOM (Aircraft Operation Manual) maximum of 40%; to get the aircraft moving. The flight continued safely with no further issues.
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.