No fatalities

Taxiing Instructor Reports Wing Strike with Sign Post

Porthill, ID, United States

On July 17, 2011, a CESSNA 172N operated by NORTHERN AIR INC was involved in an aviation accident near Porthill, ID. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain clearance from a pole. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

A flight instructor reported that, while taxiing on a road between the runway and a customs facility, the airplane's right wing struck a sign post, causing damage to the leading edge and internal ribs.

Incident Details

A flight instructor reported that, after landing, he was taxiing from the runway to the customs area located on the northern side of the airport. This required the airplane to taxi on a road that runs between the runway and the US Customs facility. During the taxi, the airplane's right wing struck a sign post located on the right side of the road.

Damage Assessment

The impact with the sign post resulted in a dent to the leading edge of the right wing and bent internal wing ribs. No other damage was noted.

Pilot Report

The flight instructor reported that there were no preimpact mechanical malfunctions or failures that would have precluded normal flight.

Contributing factors

Instructor/check pilotResponse/compensation

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Frequently asked questions

What happened in the 17 Jul 2011 CESSNA 172N accident near Porthill, ID?

A flight instructor reported that, while taxiing on a road between the runway and a customs facility, the airplane's right wing struck a sign post, causing damage to the leading edge and internal ribs.

Were there any fatalities in the 17 Jul 2011 CESSNA 172N accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 17 Jul 2011 involved a CESSNA 172N, operated by NORTHERN AIR INC, at Porthill, ID.

What was the probable cause of the accident?

The pilot's failure to maintain clearance from a pole.