Service difficulty report · Bearing · Bombdr DHC8402

Difficulty date
July 23, 2019
Submitted
July 25, 2019
Operation
Air carrier
Aircraft
N446QX
Make and model
Bombdr DHC8402
Aircraft serial
4363
Aircraft time
19,365 hours, 20,698 cycles
Part
Bearing
Part number
296752629
Condition
Failed
Location
Mlg
Stage of operation
TX
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

L MAIN OUTBOARD WHEEL SMOKING AFTER PARKING. METAL SHAVINGS OBSERVED IN AND AROUND WHEEL. CRACK IN OUTBOARD HUBCAP. REMOVED FROM SERVICE. REMOVED LT 1 MLG TIRE ASSEMBLY REF MTC 6324201, PERFORMED ITEMS 1-3 STEP 12. ACCOMPLISHED FORM M-745. REMOVED LT #2 MLG TIRE AND BRAKE REF MTC 6324201, STEPS 1-7. REMOVED #1 MLG AXLE REF TASK 32-11-04-000-801. REMOVED LT #1 BRAKE MTC 6324201 STEPS 3-7. PERFORMED INSPECTION AFTER WHEEL BEARING FAILURE REF TASK 05-50-17-210-801. FOUND AXLE, #1 WHEEL ASSY, #1 BRAKE ASSY, AND #1 WHEEL SPEED TRANSDUCER DAMAGED. NO OTHER DAMAGE NOTED. REPLACED #1 MLG AXLE REF TASK 32-11-04-000-801 AND 32-11-04-400-801. INSTALLED NEW #1 AND #2 MAIN WHEEL / TIRE ASSYS REF MTC'S 6324101. INSTALLED NEW #1 BRAKE ASSY REF MTC 6324201. RE-INSTALLED #2 BRAKE ASSY REF MTC 6324201. REPLACED #1 WHEEL SPEED TRANSDUCER REF TASK 32-46-11-000-801 AND 32-46-11-400-801. RETURNED TO SERVICE.