Service difficulty report · Bearing · Dhav DHC8*

Difficulty date
May 23, 2002
Submitted
June 13, 2002
Operation
Air carrier
Make and model
Dhav DHC8*
Engine
Pwc PW150A
Part
Bearing
Part number
29685
Condition
Collapsed
Location
Mlg Wheel
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

(CAN) A/C RETURNED TO STAND AFTER 2 REJECTED TAKEOFFS DUE TO ANTI-SKID OUTBOARD WARNING ILLUMINATED. NOTED SMOKE COMING FROM NR 1 MAINWHEEL HUB. INSPECTION REVEALED LUGS ON INBOARD FACE OF MAINWHEEL SHINNING DUE TO CATCHING & CLIPPING SOMETHING. A/C JACKED TO REVEAL INNER BEARING COLLAPSED & DISINTERTATED. EXTENSIVE DAMAGE TO WHEEL ASSY, AXLE, BRAKE UNIT & TRANSDUCER DRIVE (HUBCAP). HEAT DAMAGE TO TRANSDUCER & WIRING. DUE TO SIGNS OF OVERHEATING (BLUEING) & DAMAGE. LT AXLE ASSEMBLY REPLACED. NR 1 MAINWHEEL, BRAKE UNIT, ANTI-SKID TRANSDUCER & WIRING REPLACED. NR 1 MAIN WHEEL REPLACED DUE TO OVERHEATED BEARING. INSP OF NR 3 & 4 MAINWHEELS DUE TO HOT ON 1ST TRANSIT REVEALED OVERHEATED/DAMAGED BEARINGS NR 3 & 4