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ASN Wikibase Occurrence # 237638
Last updated: 9 September 2021
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Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172M
Owner/operator:Yokota Aero Club
Registration: N22905
MSN: 17264078
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Tokyo, FN -   Japan
Phase: Taxi
Departure airport:
Destination airport:
Investigating agency: NTSB
The operatorís operations chief reported that an air traffic controller instructed the flight instructor and pilot to taxi to a taxiway and that, subsequently, the airplane encountered prop wash from a larger airplane on the same taxiway, which flipped the airplane onto its right side and resulted in substantial damage to the forward wing spar. The larger airplaneís pilot reported that he was conducting a high-power engine run on the same taxiway. The air traffic controller did not tell the pilots in the smaller airplane at any time while they were taxiing about the larger airplane's intentions. The pilot of the larger airplane reported that all requests for engine start, taxi, and high-power engine runs were coordinated with air traffic control (ATC). He added that they had to reposition due to a tailwind and that he had made a radio call to ATC and acknowledged that they had repositioned on the ramp to face into the wind. He added that he heard the lighter airplane receive a taxi clearance but did not hear any communications questioning the larger airplane's status or position with respect to any potential impact on aircraft taxiing behind them on the taxiway. He became aware of the lighter airplane's situation after the event when its pilot made a radio call to ground control.

Probable Cause: The airplaneís encounter with prop wash while taxiing behind a larger airplane that was conducting a high-power engine run on the same taxiway. Contributing to the accident was the air traffic controllerís failure to inform the smaller airplaneís pilot about the larger airplane pilotís intentions.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 6 months
Download report: Final report

Revision history:

03-Jul-2020 12:40 ASN Update Bot Added
11-Sep-2020 13:23 Captain Adam Updated [Country, Narrative, Accident report, Accident report, ]

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