Suppliers must provide and deliver engineering drawings which describe and identify the item to be designed, developed, and delivery per the Purchase Order. Suppliers that produce drawings in order to provide parts for the Bell Helicopter Source Control Drawings must be capable of delivering piece part drawings for approval. The supplier, as a minimum, must provide the top level drawing that depicts the configuration and performance of the BHT Control drawing, for approval, to the Engineering department. For U.S. Government Contracts, piece part drawings are required to support repairable items.
Product drawings shall meet the general requirements of ASME Y14-100. The supplier's name and cage code must be present. A revision Block must be used to indicate the latest revision of the document. A parts list must be provided for those items that are deemed repairable.
All drawings that depict the configuration of the item produced for BHT shall be submitted to engineering for approval. The SOW or RDL referenced in the P.O. shall define the type, media and quantity of drawings required to be submitted for approval.
Parts that are manufactured to the BHT drawing will be required to verify that all of the requirements are understood and acceptable. The drawing shall provide the parts lists, materials and processes, protective finishes, dimensions, tolerances, U.S. Government and Bell Specifications, Engineering Orders (E.O. ), and Approved Sources for material or parts. In addition to the drawing requirements and specifications, the package will contain an Operation Sheet, known as an Outside Data Sheet, which describes any tooling required, inspection requirements, finish coating, Bell Process Specifications, Identification requirements, Packaging requirements, and any special facilities required. If the part is a Primary, Critical or Flight Safety, section 5.8 shall also apply.
The Supplier is responsible for demonstrating and verifying that the product meets all applicable performance and specification requirements. This is accomplished through testing, analysis and/or, similarity. The supplier shall demonstrate all the requirements satisfactorily prior to delivery of hardware, unless otherwise directed by purchasing. These data must be presented in a document generated by the supplier and presented to BHT engineering for approval.
Acceptance test requirements must demonstrate the design, conformance, and performance. Performance requirements shall be conducted on each piece of hardware delivered to demonstrate that the minimum performance characteristics are achieved. The product must have passed the performance requirements prior to shipment of any unit to BHT. Each unit delivered to BHT must have the conformance and performance report delivered with the product.
The supplier is not to commence any testing, acceptance, or qualification, until the test plans/procedures have been approved by BHT engineering.
All data must be delivered and approved before the Supplier's product is added to the BHT Source Control Drawing.
Suppliers shall control changes in general accordance with MIL-HDBK-61.
Any change to the BHT approved document, especially the engineering drawing(s) and Acceptance Test Procedure shall be submitted to BHT for approval. Changes must be documented on the engineering drawing through a revision of the document and/or submission of a Engineering Change Order (ECO) which describes the changes to be made. Approval shall be granted based on the engineering review of the change. Class I and II changes are described in MIL-HDBK-61.
Class I changes are generally described as any change that affects the dimension characteristics, functional characteristics, and/or the fit of the part to its intended interface. All Class I changes shall be approved by BHT engineering prior to implementing this revision into the manufacturing cycle.
Class II changes are generally described as any change that does not affect the form, fit, or function of the hardware or software. To be considered a Class II the part must function the same without the change, be interchangeable without the change, and all interfaces must be exactly the same. Bell Engineering will approve the change as agreement with the classification of change.
Unless otherwise stated in the P.O., data to be delivered to BHT shall be posted on SecureWeb, VTDE folder. The data must be in electronic format, be able to be opened by most common Microsoft formatted programs, and be discernable as to the item the data applies. The SOW or RDL shall describe in detail how access may be obtained to the BHT SecureWeb website and the required format of the data. All supplier data shall be clearly marked to indicate any limited or unlimited rights.