Vapour Degreasing Specification Materials

Page 118 Part 2 ✈ Chapter 3 - Checklists MRA – 1st Edition September 1998 Part 2 ✈ Chapter 2 - Airworthiness Audit Policy and Procedures Items References Result A-5 Is the temperature of the degreaser boiling chamber maintained within the proper range? QPM OK FDG NA A-6 If the operating temperature exceeds the recommended temperature range, what action is taken? QPM OK FDG NA Items Certified – Completed by:

3.8.14 Aluminum Brazing Dip Brazing

Items References Result A-1 Are operators qualifiedcertified? QPM OK FDG NA A-2 Is the temperature-recording equipment calibrated? QPM OK FDG NA A-3 Are circulating air ovens used to preheat parts? Are the ovens temperature-controlled? QPM OK FDG NA A-4 Are all parts brazed according to an approved schedule? QPM OK FDG NA A-5 Are test pieces available? Do test pieces undergo NDT? QPM OK FDG NA A-6 Are approved cleaning procedures adhered to? QPM OK FDG NA A-7 Are all brazed joints usually inspected? Are fillets of a uniform radius? QPM OK FDG NA A-8 Are parts checked for distortion? QPM OK FDG NA A-9 Are parts checked for porosity and cracks open to the surface? QPM OK FDG NA Part 2 ✈ Chapter 3 - Checklists Page 119 Part 2 - Airworthiness Audit Policy and Procedures MRA – 1 st Edition September 1998 Items References Result A-10 Do parts undergo NDT for internal defects? QPM OK FDG NA Items Certified – Completed by:

3.8.15 Fusion Welding

Items References Result A-1 Are welders qualifiedcertified? QPM OK FDG NA A-2 Are the surfaces of all parts to be joined free from foreign matter oil, grease, paint, dirt, scale, electroplating or other contaminants? QPM OK FDG NA A-3 Are the interior walls of all tubing thoroughly cleaned of filings, chips and other foreign matter? QPM OK FDG NA A-4 Are welded joints free from slag, flux, and so on? QPM OK FDG NA A-5 Are fusion-welded parts visually inspected for: - convexity, concavity and size beads; - undercutting, overlapping and excessive penetration; - cracks, porosity and inclusions; and - other metallic discontinuities? QPM OK FDG NA A-6 Are radiographic, magnetic-particle, fluorescent-penetrant andor pressure-test inspections carried out in accordance with the relevant schedule? QPM OK FDG NA