Narrative:

Company policy of leaving the number 1 engine running at the gate contributed to this event. The classic engine with their smaller inlet size and higher inlet lip does not have the same suction as the very high bypass and geared neo engine. The parking procedures relative to the neo engine aircraft should be reviewed and given further thought in an effort to improve ground operations safety.the aircraft was chocked in at the gate; with the number one engine still running awaiting the external power application. The lead ramp agent was in the proper position at the front of the aircraft in full view. The jet bridge was moving towards the aircraft and was approximately 1-2 ft. From docking when the aircraft began shaking violently. There was no hand signal from the lead ramp agent; but the severity of the vibration caused us to immediately shut the engine down. There were no abnormal indications on the engine display. After the engine spooled down the after-landing checklist was completed. I went down to the ramp to investigate the cause of the vibration. The ground air conditioning hose which was secured to the jet bridge had been sucked into the engine. An examination of the engine revealed remnants of the yellow air conditioning hose in the engine bypass duct and core. I asked the ramp agents what they saw and was told the air conditioning hose was not properly latched. Therefore; as the jet bridge moved closer to the aircraft; the engine suction unfurled the hose leading to its ingestion.

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Original NASA ASRS Text

Title: Captain reported that the conditioned air hose attached to the jetway air conditioning unit was ingested by the number one engine on taxi into the gate.

Narrative: Company policy of leaving the Number 1 engine running at the gate contributed to this event. The classic engine with their smaller inlet size and higher inlet lip does not have the same suction as the very high bypass and geared NEO engine. The parking procedures relative to the NEO engine aircraft should be reviewed and given further thought in an effort to improve ground operations safety.The aircraft was chocked in at the gate; with the number one engine still running awaiting the external power application. The Lead Ramp Agent was in the proper position at the front of the aircraft in full view. The jet bridge was moving towards the aircraft and was approximately 1-2 ft. from docking when the aircraft began shaking violently. There was no hand signal from the Lead Ramp Agent; but the severity of the vibration caused us to immediately shut the engine down. There were no abnormal indications on the engine display. After the engine spooled down the after-landing checklist was completed. I went down to the ramp to investigate the cause of the vibration. The ground air conditioning hose which was secured to the jet bridge had been sucked into the engine. An examination of the engine revealed remnants of the yellow air conditioning hose in the engine bypass duct and core. I asked the ramp agents what they saw and was told the air conditioning hose was not properly latched. Therefore; as the jet bridge moved closer to the aircraft; the engine suction unfurled the hose leading to its ingestion.

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.