Cessna; Model 525; Citation Jet; Speed Brake Electrical Wiring Chafing Against Fuel Line; ATA 2760

Cessna; Model 525; Citation Jet; Speed Brake Electrical Wiring Chafing Against Fuel Line; ATA 2760

The pilot reported the speed brake circuit breaker pops every time the speed brakes are extended manually or in automode.

The technician discovered a chaffed wire between pin five and pin X at connectors JR004 and PS003. The wire arced against the right engine motive fuel-flow line (P/N 6316000-52), which is located behind access panel 192CR. This caused a pinhole, and subsequently, a fuel leak, which elevated the danger.

He repaired the wire and secured it away from any other adjacent structure or tubing. He also replaced the engine motive fuel-flow line.

Part total time-2,172 hours.

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