SDR 2022F00447

Service difficulty report · Gearbox

Difficulty date
November 4, 2022
Submitted
November 4, 2022
Operation
General aviation
Engine
Cfmint CFM567B20
Engine time
37,950 hours, 20,130 cycles
Part
Gearbox
Part number
3400465090
Part serial
WZ3749
Condition
Contaminated
Location
Accessory
Part time
37,950 hours, 539 cycles
Stage of operation
NR
How discovered
V
Nature of condition
J
Precautionary procedure
O

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

What was found

CUSTOMER REPORTED AOG ON SEPT 19, 2022 FOR MAGNETIC DEBRIS FOUND DURING REGULAR MCD INSPECTION. ENGINE WAS REMOVED AND AGB RETURNED TO SHOP. SHOP DID PERFORM THE LAST SHOP VISIT (AGB RELEASED ON JUNE 23, 2022 AS MODIFIED, 539.0 HOURS / 238 CYCLES SINCE THE RELEASE. DURING AGB DISASSEMBLY, SHOP FOUND 3 NUTS MISSING ON 3 STUDS IN THE AGB HAND CRANCKING LINE. THE NUTS MAINTAIN IN POSITION THE OIL COLLECTOR AND THE BEARING ON THE COVER. THE OIL COLLECTOR WAS FOUND OUT OF POSITION AND DAMAGED. OIL COLLECTOR MATERIAL AND DEBRIS FOUND ON MCD ARE SIMILAR.