Narrative:

Chocks inserted while aircraft was still moving and under power approaching the gate. Aircraft was 1 foot short of stop bar using the self-park system at phl gate when the chocks were inserted. The marshaller had turned us over to the self-parking system to complete the gate arrival. Power was advanced on the left engine (single engine taxi) as we were approaching the gate. The aircraft would not move with increasing thrust on the left engine as we were approaching the the final phase of forward movement. An alert supervisor standing by in a truck recognized the faulty procedure and immediately jumped out of his truck to stop us from taxiing any further. Engine was shut down and aircraft parked short of the hold line. Inadequate training; experience level; attention to detail; attitude.

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Original NASA ASRS Text

Title: A Ramp Agent placed the tire chocks in front of the aircraft tires prior to the aircraft reaching its parking spot. An observing Supervisor alerted the Captain to cease increasing power attempting to attain the parking spot with the wheels blocked.

Narrative: Chocks inserted while aircraft was still moving and under power approaching the gate. Aircraft was 1 foot short of stop bar using the self-park system at PHL gate when the chocks were inserted. The marshaller had turned us over to the self-parking system to complete the gate arrival. Power was advanced on the left engine (single engine taxi) as we were approaching the gate. The aircraft would not move with increasing thrust on the left engine as we were approaching the the final phase of forward movement. An alert supervisor standing by in a truck recognized the faulty procedure and immediately jumped out of his truck to stop us from taxiing any further. Engine was shut down and aircraft parked short of the hold line. Inadequate training; experience level; attention to detail; attitude.

Data retrieved from NASA's ASRS site as of April 2012 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.