Service difficulty report · Bearing · Bombdr DHC8402

Difficulty date
April 8, 2011
Submitted
April 12, 2011
Operation
Air carrier
Aircraft
N412QX
Make and model
Bombdr DHC8402
Aircraft serial
4059
Aircraft time
23,129 hours, 23,917 cycles
Part
Bearing
Part number
29675
Condition
Failed
Location
Mlg Axle
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

LT MAIN BRAKE, OTBD WHEEL, WAS SMOKING AFTER FLIGHT WITH METAL FILINGS IN WHEEL SLOTS. REMOVED NR 1 AND NR 2 MLG TIRE AND WHEEL ASSY AND BRAKE ASSY IAW MX 6324101 AND 6324201. REMOVED NR 1 AND NR 2 WHEEL SPEED TRANSDUCERS IAW AMM TASK 32-46-11-000-801. REMOVED TRANSDUCER HARNESS IAW AMM TASK 32-11-04-000-801. AXLE DAMAGE FROM BEARING FAILURE. REMOVED NR 1 MLG AXLE IAW AMM TASK 32-11-04-000-801. INSTALLED NEW AXLE IAW TASK 32-11-04-400-801. INSTALLED TRANSDUCER HARNESS AND NEW WHEEL SPEED TRANSDUCERS IAW TASKS 32-11-04-400-801 AND 32-46-11-400-801. INSTALLED NR 1 AND NR 2 BRAKE ASSY AND WHEEL AND TIRE ASSY IAW MX 6324201 AND 6324101. C/W FUNC TEST OF ANTI SKID SYS IAW AMM TASK 32-46-00-720-802, FUNC TEST GOOD. PERFORMED VISUAL INSP OF LOWER SHOCK STRUT, ELECTRICAL HARNESS AND HYD LINES. NO DEFECTS NOTED. AXLE SLEEVE AND NR 2 AXLE NUT INSPECTED IAW AMM TASK 05-50-17-210-801 STEP 4. C. NO DEFECTS FOUND. RETURNED TO SERVICE.