Service difficulty report · Gcu · Agusta A119

Difficulty date
March 19, 2018
Submitted
March 23, 2018
Operation
Air carrier
Aircraft
N603CF
Make and model
Agusta A119
Aircraft serial
14041
Aircraft time
7,991 hours, 21,543 cycles
Engine time
7,744 cycles
Part
Gcu
Part number
GCSG505281
Part serial
1792D
Condition
Failed
Location
Lt Engine
Stage of operation
NR
How discovered
O
Nature of condition
H, J
Precautionary procedure
A

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

What was found

WHILE IN CRUISE FLIGHT OVER AN APPROXIMATE TWO MINUTE PERIOD THE FOLLOWING SYSTEMS FAILED. EACH FAILURE WAS INDICATED ON EDU 1 HOWEVER THE MASTER CAUTION NEVER ILLUMINATED. FAILURES LISTED IN APPROXIMATE CHRONOLOGICAL ORDER: -INVERTER 1 -INVERTER 2 (THIS INITIALLY APPEARED TO BE A SIMPLE INDICATION ISSUE AS INVERTER POWERED SYSTEMS WERE STILL ON-LINE) -SAS 1 -SAS 2 THIS WAS AN ACTUAL FAILURE AS THE AIRCRAFT'S ATTITUDE BECAME LESS STABLE -FUEL PUMP 1 -FUEL PUMP 2 -INDICATIONS OF A GENERATOR FAILURE -EDU 1 COMPLETE FAILURE -EDU 2 COMPLETE FAILURE -COMM 1 COMPLETE FAILURE -DIGITAL CDI COMPLETE FAILURE WAS ABLE TO RECEIVE ON COMM 2 BUT UNABLE TO TRANSMIT. DIVERTED TO KHII. AFTER COMPLETING THE APPROPRIATE EMERGENCY PROCEDURES ATTEMPTED TO CONTACT AIRCOMM VIA SAT PHONE- WAS ABLE TO DIAL AIR COMM AND HEAR THEIR RESPONSE BUT WAS UNABLE TO TRANSMIT. ACTIVATED THE "EMERGENCY" BUTTON ON THE SAT TRACKING SYSTEM. COMPLETED AN UNEVENTFUL LANDING AT KHII. GENERATOR CONTROL UNIT PN GCSG505-28-1 WAS REPLACED AS REQUIRED. AFTER GROUND RUNS AND AN OPERATIONAL CHECK FLIGHT, NO FURTHER DEFECTS WERE NOTED.

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