SDR COEA2019081321805

Service difficulty report · Circuit Breaker · Aerosp ATR42500

Difficulty date: August 12, 2019
Submitted: August 13, 2019
Operation: Air carrier
Aircraft: N805HC
Make and model: Aerosp ATR42500
Aircraft serial: 625
Aircraft time: 25,144 hours, 33,341 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Circuit Breaker
Condition: Tripped
Location: Blue Hyd System
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: B, A

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

What was found

FLIGHT 672, AIR TURNBACK, DURING CLIMB OUT, NO BLUE SYSTEM HYDRAULIC PRESSURE. CREW ELECTED TO RETURN TO DEPARTURE. EMERGENCY DECLARED. LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE PERFORMED PRESSURIZATION OF HYDRAULIC SYSTEMS. NO DISCREPANCIES. FOUND CIRCUIT BREAKER OPEN. CLOSED CIRCUIT BREAKER. OPS CHECKS GOOD.

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