A C182 pilot reported he diverted to an air force base when his engine began to run rough.

Attributes
ACN	971675
Time
Date	201109
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Aircraft 1
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Engine
Person 1
Function	Single Pilot
Qualification	Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 30 Flight Crew Total 2400 Flight Crew Type 1800
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Was losing fuel flow; engine was running rough. ATC recommended an airport twelve miles away when the air force base was only four miles away. Did not want to risk running with a rough running engine that might quit; so asked to make an emergency landing into the air force base. Fuel constriction turned out to be a loose nut on mixture control. A&P tightened nut on mixture control next day; and returned aircraft to service.

Original NASA ASRS Text

Title: A C182 Pilot reported he diverted to an Air Force base when his engine began to run rough.

Narrative: Was losing fuel flow; engine was running rough. ATC recommended an airport twelve miles away when the Air Force Base was only four miles away. Did not want to risk running with a rough running engine that might quit; so asked to make an emergency landing into the Air Force base. Fuel constriction turned out to be a loose nut on mixture control. A&P tightened nut on mixture control next day; and returned aircraft to service.

Data retrieved from NASA's ASRS site as of April 2012 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.