The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.
Cessna T182T Turbo Skylane
Fuel Pump Problems
Fuel flow was erratic, with a slight fuel leak from pump drains. Inspection revealed debris in servo screens. Teardown report showed drive couplings pitted, blades and liners scored, rotors worn. Debris in servo filter appeared to be pieces of the liner. Replaced both pumps. (The same engine-driven fuel pumps (p/n 200F5002) were installed new at engine overhaul. They were replaced at 372 hours and 389.7 hours. The pumps removed had 776.3 and 794.0 hours.
Key Takeaways:
- Aircraft across multiple manufacturers (Cessna, Diamond, Mooney, Piper) experienced diverse fuel pump failures, including loss of engine power, starting/idle issues, and leaks.
- Malfunctions affected both engine-driven and electric fuel pumps, with issues ranging from defective new units and internal leaks to worn components and relief valve gasket failures.
- These incidents occurred across a wide range of operating hours, from newly installed pumps (as low as 23 hours) to those with hundreds of hours, and some were linked to existing Airworthiness Directives or Service Bulletins.
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