Probable cause
The pilot's failure to maintain clearance from a pole.
NTSB analysis
The flight instructor reported that he was taxiing from the runway to the customs area located on the northern side of the airport, which required the airplane to taxi on a road between the runway and the U.S. Customs facility. The airplane's right wing struck a sign post on the right side of the road. The sign post dented the leading edge and bent internal wing ribs. The pilot reported no preimpact mechanical malfunctions or failures that would have precluded normal flight.
Text from the NTSB. Open the NTSB docket for WPR11CA337 for the full record.
Event
- Date
- Jul 17, 2011
- Type
- Accident
- Place
- Porthill, Idaho
- Nearest airport
- Eckhard International Airport (1S1)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Cessna 172N
- N-number
- N733BT
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Instructional
Other records under this N-number
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.