SDR CA061004009

Service difficulty report · Washer · Dhav DHC6

Difficulty date: October 4, 2006
Submitted: December 4, 2006
Operation: General aviation
Make and model: Dhav DHC6
System (JASC): 3200 · Landing Gear System
Part: Washer
Condition: Mismanufactured
Location: Mlg
Stage of operation: NR
How discovered: 9
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) WE HAVE FOUND 2 BATCHES OF C6U1156-27 MAIN LANDING GEAR WASHERS MADE FROM ALUMINUM LAMINATED SHIM MATERIAL, BUT SHOULD HAVE BEEN MADE FROM STAINLESS STEEL SHIM MATERIAL. DUE TO THE APPLICATION OF THE WASHER, THERE IS NO STRENGTH REQUIREMENT, HOWEVER, THERE IS A POTENTIAL FOR GALVANIC CORROSION. THE AFFECTED BATCHES OF WASHERS ARE WO-25363/1 AND PO43141/69. (TC NR 20061004009)