TB 10-4610-240-24
17a thru 18. Leave blank
19. CONTRACT NUMBER (DAAK01-87-C-A018).
20d. CB CODE. Put In the name of the part or assembly under warranty.
20e. REF DESIGNATOR. Put in the serial number of the part or assembly under warranty.
20g. Put In the estimated number of hours needed to replace the bad part. Use the proper technical
bulletin time schedule guide to get the estimated hours. If you can't get the guide, use actual hours.
20h. NATIONAL STOCK NUMBER. Put in the NSN of the bad part. If an NSN is not found, use the
part number.
20i.k.k. Leave blank.
20a thru 20k. Using the remaining spaces in block 20a-20k, put in this information: The
NSN of the defective item.
The name of the defective item.
The date of the failure.
The complete telephone number (AUTOVON/commercial with area code) of the person creating
the form. State dearly all factors which added to the failure. Include factors such as type of
operation and land and weather conditions. Sate clearly your opinion as to why the part failed.
20l. Total Manhours. Self-explained.
20m.
Total Manhour Cost. Leave blank.
20n. Total Parts Cost. Self-explained.
21 thru 22. Leave blank.
23. Submitted. The person authorized to send DA Form 2407 signs here.
24 thru 28. Leave blank.
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