Cessna caravan captain reported that the fuel condition lever slipped past the detent when low idle ...

Narrative:

After landing and taxi; the fuel condition lever slipped past the detent when low idle was selected. Fuel flow decreased to the point that the engine flamed-out. Smoke was then observed from the engine cowling so airport rescue and fire fighting; (arff) was requested and the passenger was escorted to the terminal building. The inadvertent engine shutdown after landing has highlighted a hazard with the condition lever in that it does not position into the notch (which is worn) on the detent. Additionally; the lever arm rests in the middle of the travel and strikes the left edge of the detent and halfway across the lever arm. In a video of what happens when the condition lever is moved quickly from high to low idle; a secondary movement of the condition lever is not required to bypass the detent. The condition lever easily rides smoothly over the detent essentially unnoticeable. To exacerbate the hazard; there is a rubber shield covering the travel that needs to be lifted out of position to visibly confirm position in relation to the detent.this airplane does not have a positive low idle stop/lever; as do other aircraft in our fleet. Had one been installed this event would not have occurred. There should be continuity in equipment within our fleet. Otherwise; this hazard will be present itself in the future.

Original NASA ASRS Text

Title: Cessna Caravan Captain reported that the fuel condition lever slipped past the detent when low idle was selected; causing the engine to shut-down; and the engine cowling filling with smoke.

Narrative: After landing and taxi; the fuel condition lever slipped past the detent when low idle was selected. Fuel flow decreased to the point that the engine flamed-out. Smoke was then observed from the engine cowling so Airport Rescue and Fire Fighting; (ARFF) was requested and the passenger was escorted to the terminal building. The inadvertent engine shutdown after landing has highlighted a hazard with the condition lever in that it does not position into the notch (which is worn) on the detent. Additionally; the lever arm rests in the middle of the travel and strikes the left edge of the detent and halfway across the lever arm. In a video of what happens when the condition lever is moved quickly from high to low idle; a secondary movement of the condition lever is not required to bypass the detent. The condition lever easily rides smoothly over the detent essentially unnoticeable. To exacerbate the hazard; there is a rubber shield covering the travel that needs to be lifted out of position to visibly confirm position in relation to the detent.This airplane does not have a positive low idle stop/lever; as do other aircraft in our fleet. Had one been installed this event would not have occurred. There should be continuity in equipment within our fleet. Otherwise; this hazard will be present itself in the future.

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.

Attributes
ACN	1514077
Time
Date	201801
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	Caravan 208B
Operating Under FAR Part	Part 135
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Throttle/Power Lever
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 2500 Flight Crew Type 1000
Events
Anomaly	Aircraft Equipment Problem Less Severe

Cessna caravan captain reported that the fuel condition lever slipped past the detent when low idle was selected; causing the engine to shut-down; and the engine cowling filling with smoke.