20251104016669A

Accident · Substantial damage

FAA accident report · Cessna 172M · Grantsburg, WI · November 4, 2025

Date
November 4, 2025 · 18:00 local
Place
Grantsburg, WI
Airport
Grantsburg Municipal
Phase of flight
Landing: Touchdown
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N9490H
NTSB investigation
NTSBCEN26LA035
Reported as
Cessna 172M
Reported engine
Lycoming 0-320 series
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Commercial pilot, flight instructor, private pilot, student
Pilot’s flight hours
757 total

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

The PIC was on an IFR approach an hour past sunset. As the pilot flared to land, her right wing strobe light briefly illuminated a deer which was running from the right of the runway directly towards the runway. The pilot initiated a go-around short of touchdown, but the deer struck the leading edge of the right horizontal stabilizer. On go-around the PIC observed reduced climb performance and right yaw but felt she maintained control of the aircraft. The pilot considered returning to land but decided to divert to an airport ten miles away after suspecting there may be more deer activity or a dead deer on the runway surface. She felt that airport lighting did not allow for a safe landing. The pilot notified ATC that she had a deer strike and requested to divert. ATC granted the request. The PIC landed without further incident. There were no noted human injuries or property damage. Substantial damage occurred to the right horizontal stabilizer’s leading edge, ribs, spar, and upper and lower surfaces.

As the FAA filed it

THE PIC WAS ON AN IFR APPROACH AN HOUR PAST SUNSET. AS THE PILOT FLARED TO LAND, HER RIGHT WING STROBE LIGHT BRIEFLY ILLUMINATED A DEER WHICH WAS RUNNING FROM THE RIGHT OF THE RUNWAY DIRECTLY TOWARDS THE RUNWAY. THE PILOT INITIATED A GO-AROUND SHORT OF TOUCHDOWN, BUT THE DEER STRUCK THE LEADING EDGE OF THE RIGHT HORIZONTAL STABILIZER. ON GO-AROUND THE PIC OBSERVED REDUCED CLIMB PERFORMANCE AND RIGHT YAW BUT FELT SHE MAINTAINED CONTROL OF THE AIRCRAFT. THE PILOT CONSIDERED RETURNING TO LAND BUT DECIDED TO DIVERT TO AN AIRPORT TEN MILES AWAY AFTER SUSPECTING THERE MAY BE MORE DEER ACTIVITY OR A DEAD DEER ON THE RUNWAY SURFACE. SHE FELT THAT AIRPORT LIGHTING DID NOT ALLOW FOR A SAFE LANDING. THE PILOT NOTIFIED ATC THAT SHE HAD A DEER STRIKE AND REQUESTED TO DIVERT. ATC GRANTED THE REQUEST. THE PIC LANDED WITHOUT FURTHER INCIDENT. THERE WERE NO NOTED HUMAN INJURIES OR PROPERTY DAMAGE. SUBSTANTIAL DAMAGE OCCURRED TO THE RIGHT HORIZONTAL STABILIZER’S LEADING EDGE, RIBS, SPAR, AND UPPER AND LOWER SURFACES.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.