Cessna pilot reported a runway excursion and aircraft damage caused possible by a mechanical failure...

Attributes
ACN	1751749
Time
Date	202007
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Tower
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna Stationair/Turbo Stationair 6
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Direct
Flight Plan	VFR
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 24 Flight Crew Total 147 Flight Crew Type 35
Events
Anomaly	Deviation - Procedural Published Material / Policy Ground Event / Encounter Object Ground Event / Encounter Loss Of Aircraft Control Ground Event / Encounter Ground Strike - Aircraft Ground Excursion Runway

Narrative:

At time of landing; ZZZ ATIS reported sky clear; 10 statute miles of visibility; wind 290 at 8 kts. After making a stabilized approach; right traffic for runway; I came across the threshold at about 75 kts. I touched down; then the left wing came up; the plane veered right; on its right wheel. I tried to correct this with left rudder and left aileron; with no success. The plane went off the right side of the runway; hitting a runway lamp with the propeller. I braked and we stopped in the grass near the confluence of the two runways. There were no injuries to me nor my passenger; and it appears the only damage to the plane is the prop strike. Given lack of crosswind and loss of rudder control; it may be a mechanical issue. We have filed an insurance claim and hope to learn more.

Original NASA ASRS Text

Title: Cessna Pilot reported a runway excursion and aircraft damage caused possible by a mechanical failure.

Narrative: At time of landing; ZZZ ATIS reported sky clear; 10 statute miles of visibility; wind 290 at 8 kts. After making a stabilized approach; right traffic for runway; I came across the threshold at about 75 kts. I touched down; then the left wing came up; the plane veered right; on its right wheel. I tried to correct this with left rudder and left aileron; with no success. The plane went off the right side of the runway; hitting a runway lamp with the propeller. I braked and we stopped in the grass near the confluence of the two runways. There were no injuries to me nor my passenger; and it appears the only damage to the plane is the prop strike. Given lack of crosswind and loss of rudder control; it may be a mechanical issue. We have filed an insurance claim and hope to learn more.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.