CEN25LA088

NTSB accident investigation · Cessna 172S · Air Force Academy, CO · January 27, 2025

Accident · No injuriesClass 4 · LimitedFinal report
Date
January 27, 2025, 09:30 local (16:30 UTC)
Place
Air Force Academy, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N51387Cessna 172S
Defining event
Approach-VFR pattern final: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration - Denver FSDO
FAA report
20250127000659A
Case key
199611

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

On this page

Probable cause

The pilot’s failure to maintain airplane control during final approach after encountering an unexpected windshear.

Findings · 4

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.

Wind: windshearEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 172S: 1 caseAll aircraft: 90 casesProbable cause
Wind: windshearEnvironmental issues › Conditions/weather/phenomena · Response/compensationCessna 172S: 1 caseAll aircraft: 90 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 172S: 206 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: descent rateAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172S: 1 caseAll aircraft: 242 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

According to the pilot, about 150 ft above ground level, the airplane encountered an unexpected windshear which resulted in a “significant sink rate” and loss of about 10 knots of airspeed. The pilot attempted to arrest the descent by adding engine power but was unsuccessful. The airplane landed hard, bounced, and then settled on the runway. Postaccident examination of the airplane revealed substantial damage to the firewall. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N51387
Reported as
Cessna 172S
Category
Airplane
Serial number
172S9013
Built
2001
Airframe hours
1,655.5
Engine
Lycoming IO-360-L2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
10fss - Usafa Aero Club
Registered owner
10fss - Usafa Aero Club
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 27, 2024
Airport
AFF · USAF Academy Davis Airfield, runway 34R, 3,500 × 75 ft, asphalt
Equipment
Stall warning system, ADS-B, Auto-pilot, Handheld GPS

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
71
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
September 17, 2024
Seat
Left
Restraint
3-point
Flight hours
12,046 total · 142 in this make and model · 7,423 as pilot in command · 61 in the last 90 days · 15 in the last 30 days
Role
Pilot
Age
30
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
August 23, 2024
Seat
Right
Restraint
3-point
Flight hours
1,636 total · 1,500 in this make and model · 1,508 as pilot in command · 100 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
41 °F, dew point 10 °F
Altimeter
30.10 inHg
Turbulence
Severe
Observed at
KAFF
METAR
KAFF 271655Z AUTO 06003KT 10SM CLR 05/M12 A3010 RMK AO2 SLP238 T00471123

Docket · 2

The files NTSB released with the investigation on April 22, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.0 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.