SDR CA110302002

Service difficulty report · Bearing · Bombdr DHC8400

Difficulty date: February 28, 2011
Submitted: September 14, 2015
Operation: General aviation
Make and model: Bombdr DHC8400
Engine: Pwc PW150A
Propeller: Rotol CR4086123F17
System (JASC): 3246 · Wheel/Ski/Float
Part: Bearing
Condition: Seized
Location: Mlg Wheel
Stage of operation: LD
How discovered: O
Nature of condition: W
Precautionary procedure: O

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

What was found

(CAN) UPON LANDING THE NR 4 BRAKE APPEARED TO SEIZE. AFTER REMOVING NR 4 WHEEL AND BRAKE ASSEMBLY, IT WAS NOTICED THE BRAKE HAD BEEN BROKEN AND THE NR 4 BEARING INBD WAS DISINTEGRATED. INVESTIGATION FOUND THAT THE BEARING WAS LUBRICATED WITH MOBIL 28 GREASE. THIS GREASE IS NOT THE APPROVED GREASE FOR THE LANDING GEAR WHEEL BEARING. REF SL, DH8-400-SL-12-005. APPROVED GREASE AND APPLICATION COMPATIBILITY.