Repairing chafing damage on Challenger main landing gear door inner skin
Effectivity: Challenger 604/605/650 aircraft
ATA: 32
By: Robert B. Reid – Technical Services Bombardier has received recent Service Requests for Product Support Action (SRPSA) concerning chafing damage on Challenger main landing gear (MLG) door inner skins at FS526.54 and BL48.175.
This article reminds operators and maintenance crews that General Repair Engineering Order (GREO) 604-32-12-076 is available on the Bombardier Customer Portal.
This GREO outlines the procedures to repair MLG door inner skins P/N 604-31178-13 (LH) and 604-31178-14 (RH). There are two repair options provided:
For blended damage 0.017” maximum of the 0.040” nominal thick skin – Blend damage and restore the finish of reworked areas per A032 per SRM 51-01-04.
For blended damage depth exceeding 0.017” of the 0.040” nominal thick skin – Cut damage from skin, manufacture and install doubler and restore the finish of reworked areas per A032 per SRM 51-01-04.
The above noted GREO is available on the Bombardier Customer Portal, under the heading “Library / Engineering Documents / Generic Repairs.”