on assemblies that have a rework and/or overhaul life limit. Its subassemblies are either removed at the depot level only or they are discarded if they are removed by organizational- or intermediate- level maintenance.

The loss of an ASR can cause the loss of the assembly to the supply system; therefore, you must be able to reconstruct the assembly's history to determine a course of action if the ASR is not available. The central repository at the NAVAVNMAINTOFF has the responsibility for determining the course of action if an ASR is lost. The central repository accomplishes this responsibility by reviewing misplaced and cancelled ASRs, copies of all updated records after rework, and copies of all new ASRs generated for new ASR items.

When you are reconstructing ASRs that have been lost, misplaced, or destroyed, caution must be taken when dealing with components having an established finite life. Since the failure of a finite-life item may have catastrophic consequences, it is mandatory that documented proof of the item's remaining service life be determined before the item is installed on a piece of equipment or aircraft. On some components, an overspeed and/or overstress occurrence is a mandatory reportable factor; and this information must be determined and documented. Visual appearance and satisfactory performance of an item are not considered sufficient evidence of remaining serviceability. If the central repository does not have the historical data to complete a new ASR, the NAVAVNDEPOT having MECFA responsibility will be contacted for disposition of the assembly and final determination as to its serviceability.

As previously stated in the descriptive paragraphs for SRC cards, engineering analysis will sometimes require adjustments to a component's replacement interval. When making adjustments to the replacement blocks on the ASR, care must be taken to ensure complete accuracy because the replacement interval block on an ASR differs from the SRC card. The SRC card tracks individual, serial-numbered components; the maximum removal interval is normally the same for all serial numbers under a part number. The ASR card tracks individual, serial-numbered assemblies; the internal parts of each assembly dictate assembly removal time. The removal interval for each ASR assembly is normally determined at the time of assembly; therefore, for ASR assemblies, the individual serial numbers under one part number may have different removal intervals. When official notification is received concerning a change in the time/cycle requirement of an ASR item, you should determine whether the time/cycle change is against the assembly or against an internal component within the assembly. If the change is against the assembly, line through the old time/cycle requirement in the replacement interval block and add the new requirement. Then, recalculate the replacement due value. In Section VI - Repair/Rework/Overhaul/Exceedances - you should record the following entries:

Date - The date the action is taken.

Activity - The activity completing the action.

Description - Record the following statement using the associated values: "Time/cycle requirement (increased/decreased) from (old value) to (new value) in accordance with (reference)."

If the change is against an internal component, you should document the change by using the following procedures:

1. Identify the affected component(s) in Section II. Then, recalculate the replacement interval for the affected component(s) and compare the new replacement interval with the replacement interval value of the assembly.

2. If the component's new replacement interval value does not affect the assembly's replacement interval value, record the following in block E, Miscellaneous Data, of Section II: "P/N (value) T/C change to (value) in accordance with (reference) with no effect on assembly's replacement interval."

3. If the component's new replacement interval value changes the assembly's replacement interval value, record the following in block E, Miscellaneous Data, of Section II: "P/N (value) T/C changed to (value) in accordance with (reference), which also changed the assembly's replacement interval." Line through the old time/cycle requirement in the replacement interval block and add the new requirement. Recalculate the replacement due value. In Section VI - Repair/Rework/Overhaul/Exceedances - record the same entries as you would for a change in the assembly time/cycle requirement.