SDR 2026FA0000334

Service difficulty report · Bellows · Cessna 208B

Difficulty date: May 4, 2026
Submitted: May 7, 2026
Operation: General aviation
Aircraft: N347KA
Make and model: Cessna 208B
Aircraft serial: 2407
Aircraft time: 9,055 hours, 15,486 cycles
Engine: Pwa PT6A114A
Engine time: 1,072 hours, 2,073 cycles
System (JASC): 7321 · Fuel Control/Turbine Engines
Part: Bellows
Condition: Faulted
Location: Fcu
Stage of operation: DE
How discovered: O
Nature of condition: R, J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PILOT NOTICED AFTER DESCENT TO FLIGHT LEVEL 1500 FEET, LEVELING OFF AND ADDING POWER, TORQUE INDICATION DROPPED 200 AND RECOVERED ON ITS OWN WITH NO INPUT TO THE POWER LEVER. AFTER DISCUSSION WITH PRATT AND WHITTNEY, IT WAS DETERMINED THAT THE FUEL CONTROL DESCENT BELLOWS WAS THE ISSUE.

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