Inspection of Bonded Parts References

Part 2 ✈ Chapter 3 - Checklists Page 109 Part 2 - Airworthiness Audit Policy and Procedures MRA – 1 st Edition September 1998

3.8.3 Cadmium Plating

References Result A-1 Are specifications and procedures available to the operators and are they used? QPM OK FDG NA A-2 Are parts vapour-degreased? QPM OK FDG NA A-3 Are steel parts pickled in hydrochloric acid to remove surface rust and oxidisation? QPM OK FDG NA A-4 Are copper parts bright-dipped in sulphuric acid? QPM OK FDG NA A-5 Is adequate rinsing carried out throughout the finishing process? QPM OK FDG NA A-6 Are baking ovens subject to temperature uniformity checks? QPM OK FDG NA A-7 Is the finished product visually inspected for evidence of defective plating? QPM OK FDG NA A-8 Are the following tests carried out using approved methods and calibrated instruments: - plating-thickness testing; - adhesion testing; - solution control analysis; and - the salt-spray test? QPM OK FDG NA Items Certified – Completed by:

3.8.4 Chemical Milling of Aluminum Alloys

References Result A-1 Are specifications and procedures available to the operator and are QPM OK FDG NA Page 110 Part 2 ✈ Chapter 3 - Checklists MRA – 1st Edition September 1998 Part 2 ✈ Chapter 2 - Airworthiness Audit Policy and Procedures References Result they used? A-2 Are the temperature and etch rate of the chemical mill solution analysed and recorded? QPM OK FDG NA A-3 Is there sufficient agitation of the solution to process the parts properly? QPM OK FDG NA A-4 Are parts in preparation for milling suitably racked to minimise gas entrapment? QPM OK FDG NA A-5 Are viscosity checks of the masking solution carried out and recorded? QPM OK FDG NA A-6 Do the operators observe cleanliness and good housekeeping practices throughout the process? QPM OK FDG NA A-7 Are chemically milled parts properly protected from damage? QPM OK FDG NA A-8 Are the internal surfaces of the tubes inspected for a powdery appearance of the coating? QPM OK FDG NA Items Certified – Completed by:

3.8.5 Chemical Conversion Coatings for Aluminum Alodine: Brush

Spraying and Immersion References Result A-1 Are specifications and procedures available and are they used? QPM OK FDG NA A-2 Are parts vapour-degreased prior to alodine application? QPM OK FDG NA