Service difficulty report · Engine · Bell 407

Difficulty date
October 25, 2024
Submitted
October 28, 2024
Operation
Air carrier
Aircraft
N450AM
Make and model
Bell 407
Aircraft serial
54435
Aircraft time
4,370 hours, 11,499 cycles
Engine
Allsn 250C47B
Engine time
11,685 hours, 27,171 cycles
Part
Engine
Condition
Making Metal
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

ENGINE CHIP LIGHT IN-FLIGHT I ACCEPTED A PATIENT FLIGHT REQUEST FOR AN INTERFACILITY TRANSFER FROM PINE RIDGE HOSPITAL TO MONUMENT HEALTH IN RAPID CITY, SD. FLIGHT WAS UNEVENTFUL ENROUTE TO THE HOSPITAL AND THE PATIENT LEG. THE PATIENT WAS DROPPED OFF AND WE DEPARTED THE HOSPITAL. SHORTLY AFTER TAKEOFF AND DURING THE CLIMB PHASE OF FLIGHT WE RECEIVED AN ENGINE CHIP LIGHT. OVER A RESIDENTIAL AREA AND 10 MINUTES TO THE AIRPORT PILOT ELECTED TO PERFORM A PRECAUTIONARY LANDING IN THE NEAREST SUITABLE AREA. A DIRT PARKING LOT ADJACENT TO A CONCRETE PARKING LOT WAS SELECTED (N44 03.39 W103 13.36). AFTER SCANNING THE AREA, A SAFE LANDING WAS COMPLETED. ONCE SHUT DOWN THE AIRCRAFT WAS WRITTEN UP AND TAKEN OUT OF SERVICE. PILOT NOTIFIED AIRCOM, OCC, RAM, AND MECHANIC. AFTER MAINTENANCE WAS COMPLETED, THE AIRCRAFT WAS PUT BACK IN SERVICE AND RETURNED TO BASE. MAJOR ENGINE MAINTENANCE WAS PERFORMED BY INSTALLING A NEW ENGINE SECTION DAYS PRIOR TO THE EVENT. IT’S BELIEVED THAT BREAK IN FUZZ CAUSED THE ENGINE CHIP LIGHT.

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