As many operators of Challenger 600 Series aircraft are aware, Bombardier has released Service Bulletin (SB) ATA 55-11 titled “SPECIAL CHECK/MODIFICATION – PASSENGER DOOR –EPOXY RAMP REMOVAL AND CORROSION PREVENTION.”
According to the SB,
There have been several reports of corrosion in the lower structural elements of the passenger door. It was determined that the epoxy ramp installed to prevent water accumulation could deteriorate with time and retain moisture. The purpose of this Service Bulletin is to remove the epoxy ramp to prevent further corrosion, add additional draining holes and modify the door structure to allow access to facilitate scheduled inspections.
To help support our customers in performing this SB, all three of Duncan Aviation’s maintenance facilities (LNK, BTL & PVU) have obtained a cold jet Aero 40 Series dry ice blasting machine. This dry ice blasting machine is integral in removing the epoxy ramp in an efficient manner while insuring no collateral damage to existing door structure occurs.
Technicians at all locations have been properly trained by Cold Jet, the blasting machine’s OEM. Duncan Aviation has successfully completed this SB in-the-field and have several more in-the-field events scheduled through the remainder of 2012.
For more information about the Aero 40 Series dry ice blasting machine and to schedule the completion of this SB, please contact Duncan Aviation’s Airframe Service Sales.
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