MIL-STD-801D
prior to acceptance. Major defects detected in cells during stand or dissection tests or in separate fittings subjected to destructive sampling tests are analyzed to determine cause. If the defect can be shown to be a unique case, the lot represented by the defective item may be accepted. If not unique, all like defects shall be reworked using the approved rework procedure prior to acceptance of the lot and appropriate alterations must be made in the manufacturing process to prevent repetition of the defect.
5.3.3 Critical defects. Critical defects in fuel cells or replacement fuel cell fittings are cause for rejection of the cell. The cell may be deliverable if the manufacturer can devise a special rework technique along with a test procedure, both of which are acceptable to the procuring activity. When a critical defect is identified in cells subjected to stand or dissection tests, the procuring activity is notified immediately. If a critical defect is identified during the production sampling's test, production is stopped until the problem is resolved and a course of action established that is mutually satisfactory to the cell manufacturer and the procuring activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. This standard classifies common defects in fuel cells and fuel cell fittings. This standard establishes the requirements for normal finish operations and sets acceptance limits or rework on new cells. These finish operations and acceptance limits are intended for military aircraft fuel tanks that must pass ballistic tests.
6.2 Acquisition requirements. Acquisition documents should specify the title, number, and date of the specifications cited.
6.3 Supersession note. When referenced in a specification or Government acquisition document, MIL-STD-801 governs the inspection of production fuel cells in the manufacturer's and prime contractor's plants or at Government facilities to the extent specified in the contract under which the cells were acquired. The following Air Force - Navy Aeronautical Bulletins were superseded by MIL-STD-801: ANA-BUL-107, Inspection Standards for Stand and Dissection Tested Self-Sealing Fuel and Oil Cells; ANA-BUL-112, Acceptance Standards for Self-Sealing Fuel and Oil Cells; and ANA-BUL-435, Inspection Standards for Stand and Dissection Tested Non-Self-Sealing Type Cells.
6.4 Subject term (key word) listing.
Aircraft |
Finish operations |
Bladder |
Leakage |
Classification |
Rework |
Crash resistant |
Self-sealing |
Critical |
Stand test |
Defects |
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