Supplier Quality (SQ) from Northrop Grumman Aeronautics Systems (NGAS) and the Strategic Space Systems Division (SSSD) and the Strategic Deterrent Systems (SDS) of the Space Sector (SP) maintain an "Approved Special Processor List" (ASPL) for all NGAS, SSSD and SDS programs. This list can be sorted by Supplier Name, Supplier Number, Country, or Process Specifications and Process Categories.

How to use the ASPL and the enclosed information is bulleted below:

  • Users must initially select the specific ASPL they are searching within (i.e. Aeronautics Systems, Strategic Space Systems, or Strategic Deterrent Systems). If you are unsure which ASPL to search please verify with your NG Buyer.
  • All specifications can be selected by selecting Specification (1st button), Category (2nd button), which includes 8 categories and Space Systems Division specifications, or F35 specifications under Program (3rd button).
  • At the Top RH side of the site is a “Helpful Links” button that has 8 links. See Below for 5 specific ones.
    • First two links are to Boeing’s ‘D1-4426’ ASPL and Lockheed’s ‘QCS-001’ ASPL.
    • Third is a “Change Log” that shows when processors are added or removed, or when specifications are added or removed from the processors or the ASPL.
    • The 4th and 5th are listings of NDT technique approvals; by “Processor and by Part Number”.
For any questions, contact:

Warning:    Northrop Grumman process specifications contain technical data whose export is restricted by the Arms Export Act (Title 22, U.S.C., Sec 2751 et seq.) or the Export Administration Act (Title 50, U.S.C., App. 24001-240). Violation of these export laws are subject to severe criminal penalties.

 


 
Seyer Industries Inc - NADCAP Approved
90052833
Independent Processor
66 Palmos Court
St. Peters, MO 63376-3903 United States
Phone: 636-229-4121
Fax:
Selected sector: AS

Specification
Process Description
Category
Process Specification for Etching Prior to Penetrant Inspection
Chemical Processing
Limits:
Limited to Aluminum and Titanium only

Process Specification for Sealing, Integral Fuel Tank and Fuel Cell Cavity
Finishes/Coatings
Limits:
Not approved for Appendix A

Cleaning and surface preparation of titanium and titanium alloys
Chemical Processing
Limits:
Limited to acid etch only. Excludes Appendices

Process Specification for Contamination Free Hole Preparation, Drilling, Machining and Trimming of Composites and Composite/Metallic Structures
Composites
Limits:

Penetrant Inspection
Non-Destructive Testing
Limits:
Type I, Method A, Sensitivity Level 3, Form D, and Not approved for Appendix A & B.

Passivation Treatments for Corrosion-Resistant Steel
Chemical Processing
Limits:
Method 1 only. Copper sulfate test is allowed for materials that meet para 3.2.1.3

Chemical Passivation Treatments for Stainless Steel Parts
Chemical Processing
Limits:
Nitric Solutions only. Copper sulfate test is allowed for materials that meet para 14.4.1

Descaling & Cleaning Titanium and Titanium Alloy Surfaces
Chemical Processing
Limits:
None

Standard Practice for Liquid Penetrant Testing
Non-Destructive Testing
Limits:
Type I, Method A, Sensitivity Level 3, Form d.

Standard Practice for Magnetic Particle Testing
Non-Destructive Testing
Limits:
None

Fusion Welding for Aerospace Applications
Welding
Limits:
None

Structural Steel Welding - Steel
Welding
Limits:
None

Structural Welding - Aluminum
Welding
Limits:
None

Structural Welding - Stainless Steel
Welding
Limits:
None

Chemical Conversion Coatings for Aluminum and Aluminum Alloy
Chemical Processing
Limits:
Type 1 Only

Anodic Coatings For Aluminum and Aluminum Alloys
Chemical Processing
Limits:
Type II Only. Includes following SQAR Requirements for a 5% Sodium or Potassium Dichromate seal for E2, C2, EA-6B, EA-18G, or E8 engineering drawings.