Service difficulty report · Bevel Gear · Emb EMB145XR

Difficulty date
November 6, 2006
Submitted
November 8, 2006
Operation
Air carrier
Aircraft
N11150
Make and model
Emb EMB145XR
Aircraft serial
145756
Aircraft time
8,847 hours, 4,730 cycles
Engine
Allsn AE3007A
Engine time
10,823 hours, 5,757 cycles
Part
Bevel Gear
Condition
Failed
Location
Nr 2 Engine
Stage of operation
DE
How discovered
O
Nature of condition
Y, J
Precautionary procedure
A

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

What was found

PVD FLIGHT NR 2366 THE CREW REPORTED ENGINE NR 2 FAILED IN FLIGHT ON DESCENT INTO PVD. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.MAINTENANCE REPLACED THE NR 2 ENGINE. OPERATIONAL CHECKS WERE GOOD. DFDR DATA SHOWED NR 2 ENGINE DECREASED FROM 91% TO 0 IN 1 SECOND.THIS IS INDICATIVE OF A RADIAL DRIVE SYSTEM FAILURE.TEAR DOWN REPORT INDICATED THE ENGINE FAILURE WAS CAUSED BY THE UPPER BEVEL GEAR FAILURE. CAUSE OF GEAR FAILURE : RESONANCE MODE (2DOC).

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