C182 pilot reported landing on a beach when the engine would not develop full power.

Attributes
ACN	1372592
Time
Date	201607
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Visual Approach
Flight Plan	VFR
Component
Aircraft Component	Engine
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 8 Flight Crew Total 4431 Flight Crew Type 62
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

[In flight at 5000 ft] the airplane would only develop partial power and I could not make it back to the airport. I elected to land on a deserted beach. The landing was smooth without damage to the airplane or anything on the beach. I then attempted to restart the engine and the engine developed rated power. After a thorough visual inspection of the engine there was no indication of anything loose or leaking. As I am an a&P mechanic; I was instructed by the FAA to create a document before I took off that the aircraft was approved for return to service. After being released from the [state] department of public safety I started the aircraft and flew back to [my home] airport without further problems.

Original NASA ASRS Text

Title: C182 pilot reported landing on a beach when the engine would not develop full power.

Narrative: [In flight at 5000 ft] the airplane would only develop partial power and I could not make it back to the airport. I elected to land on a deserted beach. The landing was smooth without damage to the airplane or anything on the beach. I then attempted to restart the engine and the engine developed rated power. After a thorough visual inspection of the engine there was no indication of anything loose or leaking. As I am an A&P mechanic; I was instructed by the FAA to create a document before I took off that the aircraft was approved for return to service. After being released from the [State] Department of Public Safety I started the aircraft and flew back to [my home] airport without further problems.

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.