TB 1-2840-248-20-2
7. History recorder S/N. When installing the component or module on an engine, enter the engine history
recorder serial number.
NOTE: Entries are also required on the engine DA Form 2408-16-1 when components or modules are removed
or installed on the engine.
BACKSIDE
Blocks 8 through 12. The required information in these blocks should be entered prior to component or
module installation. If the required information is not present contact the DA Form 2410 Hotline, DSN 693-
1879 or Commercial (314) 263-1879.
Block 13. Replacement due (Hist rcdr hr)
a. If the subcomponent 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 module using the procedure in block 6
of the DA Form 2408-16-1 for the module or component.
(3) Subtract the entry in the top portion of block 12d from the module total cumulative operating
hours.
(4) Add to the operating hours entered in the bottom portion of block 12d for the
subcomponent.
(5) Subtract these hours from the MAOT entered in block 11.
(6) Add the remainder to the current history recorder operating hours.
(7) Enter the replacement time in block 13 using a black lead pencil.
14. SIGNIFICANT HISTORICAL DATA. Enter any significant historical data on engines, components,
modules and parts. Before you enter the data, enter the' date of your entry. After you enter the historical data,
enter your name, organization, and location. If you need more space, use a DA Form 2408-15 as a
continuation sheet. Print "DA Form 2408-16-1 Continuation" in the top margin of the form and complete the
form heading with the engine or module information. The following are examples of significant historical data:
Crash damage, contamination, hot starts, over torques, overspeeds, salt water immersion, and overhaul/major
repair.
NOTE: For component or module: Attach the DA Form 2408-16-1 along with the DA Form 2410 to the removed
item (if required for shipment to higher level maintenance activity).
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