WPR24LA315

NTSB accident investigation · Cessna 172P · Kooskia, ID · September 26, 2024

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
September 26, 2024, 12:00 local (19:00 UTC)
Place
Kooskia, ID
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N54829Cessna 172P
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20240926014279A
Case key
195225

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot’s decision to descend into a canyon that exceeded the performance capabilities of the airplane, which resulted in an impact with trees and terrain.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Aircraft capability: climb capabilityAircraft › Aircraft oper/perf/capability · Capability exceededCessna 172P: 1 caseAll aircraft: 183 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot of the airplane reported that while enroute he chose to descend and perform a low pass over an airstrip located within a canyon. After the airplane overflew the airstrip, the pilot realized the airplane’s climb performance was insufficient to clear the rising terrain in its flight path. Subsequently, the airplane impacted trees and terrain, resulting substantial damage to its wings, fuselage, and empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N54829
Reported as
Cessna 172P
Category
Airplane
Serial number
17275059
Built
1981
Airframe hours
18,682.9
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Aviate LLC DBA, doing business as Glass Cockpit Aviation
Registered owner
Aviate LLC DBA
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 17, 2024
Departed
BOI · Boise, ID
Airport
S92 · Fish Lake Usfs, runway 23, 2,650 × 50 ft, grass/turf
Equipment
Stall warning system, ADS-B

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 18, 2024
Seat
Left
Restraint
3-point
Flight hours
128.7 total · 106.3 in this make and model · 45.1 as pilot in command · 7.5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 3 knots
Visibility
10 statute miles
Temperature
72 °F, dew point 50 °F
Altimeter
30.01 inHg
Observed at
KP69, 58 nm away

Docket · 2

The files NTSB released with the investigation on March 13, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.0 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.