TB 1-2840-248-20-2
BACKSIDE. (Figure 13, Sheets 2 of 3 and 3 of 3).
NOTE: When a component or module is removed from the engine, line out the entry for that component or
module on the engine DA Form 2408-16-1. Enter the data for the replacement component or module on the
next open line.
8. Nomenclature. Enter the name of each replaceable component or module on the lines below.
9. Part number. Enter the manufacturer's part number of each component or module on the lines below.
10. Serial number. Enter the serial number of each component or module on the lines below.
11. O/H or replacement life.
a. If the item in block 8 has an established MAOT for overhaul, rebuild, or retirement enter the MAOT in
this block.
b. If the item in block 8 is a condition change component enter "COND" in this block.
12. Historical counts at last depot repair.
a. The purpose of these blocks is to determine what the cumulative counts on the subcomponents were
when the subcomponents were installed on the component or module and the total cumulative counts on the
module or component at the time of subcomponent installation.
b. When this form is prepared for the engine, LCF-1, LCF-2, and T/TI counts will not be entered for
modules or components that do not have a separate DA Form 2408-16-1. Operating hours only will be entered
for components and modules not having a separate DA Form 2408-16-1.
c. Two entries will be made in each block. One entry at the top of the block and one entry at the bottom of
the block. The
total cumulative counts for the engine at the time of component or module installation will be entered in the top
portion of this block. The total cumulative counts for each component or module at the time of installation on
the engine will be entered in the bottom portion of each block.
13. Replacement due (Hist rcdr hr).
a. If the component or module has an assigned MAOT, the replacement time must be calculated.
b. If the history recorder is replaced, the MAOT will have to be recalculated;
(1) Read the engine history recorder to obtain the current history recorder operating hours.
(2) Calculate the total cumulative operating hours for the engine using the procedure in block 6.
(3) Subtract the entry in the top portion of block 12d from the engine total cumulative operating hours.
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