The Boeing preferred method for removing sealant from exterior pressurized fuselage skin is to use the AC TECH Scraper, TS 1275-4 (I.A) plus solvent to remove all the sealant. Using the AC TECH Scraper, TS 1275-4 scraper exclusively poses the least risk to marking the fuselage skin prior to inspecting for scribe marks. For this reason, using the AC TECH Scraper, TS 1275-4 is the Boeing recommended, least risk method for removing sealant from the fuselage skin.

TS 1275-4 Sealant Scraper Technical Specifications



Boeing Approved Sealant Removal Scraper
Recommended by Boeing for use on the following areas on exterior pressurized fuselage skin: Lap Joints, Butt Joints, All other areas (i.e. antenna cutouts, wing to body fairings, around window forgings, etc.)

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