MIL-DTL-38804D
modiied items. The part number of the item shall be changed when speciied by the acquiring activity
(see 6.2u.). When retroit changes result in change of part numbers which are stamped, stenciled,
etched, etc., on the affected equipment, instructions shall be given to identify the location and method
of marking of the new part numbers. When practical, a new data plate shall be included in the kit
to relect the new part number or identiication markings in lieu of stamping, stenciling, or etching.
Instructions shall comply with the requirements of MIL-STD-130. The number, speciication, shade of
color, etc., of each referenced part shall be given.
3.5.8.5.1 Nameplates. If the retroit change requires a new nameplate for the equipment, the nameplate
shall be provided in the kit and instructions shall be furnished for completing the required information on
the nameplate; for example, transferring the serial number.
3.5.8.6 Marking for inspection. Where changes or inspections are directed which are not readily apparent
through visual inspection, instructions shall be given to mark the article during retroit change in such a
manner that accomplishment can be afirmed in the installed condition through visual inspection to the
maximum extent practical. The instructions shall give the speciic type and location of such markings.
These markings shall not form a preix or sufix to part numbers or stock numbers. Approval of the
acquiring activity shall be obtained prior to preparation of instructions. The type of marking shall be
indicated in the Records paragraph (see 3.5.10).
3.5.8.7 Marking containers. When modiied equipment is to be packed or crated, instructions shall be
included for marking the exterior of the container to indicate speciic TCTO compliance. These instructions
shall conform to the requirements of MIL-STD-129.
3.5.8.8 Demilitarization. When a removed or replaced part/material requires demilitarization prior to disposal
action, instructions shall be given for demilitarizing the part/material.
3.5.9 Supplemental Information (paragraph 7). This paragraph shall include information, as applicable,
pertaining to defuel/purge requirements, operational checkout requirements, weight and balance information,
3.5.9.1 Fuel system defuel/purge. This subparagraph shall contain a statement that (defueling/purging) of the
fuel system (shall be accomplished/is not required) prior to accomplishing the TCTO.
3.5.9.1.1 Defuel/purge determination. Determination of whether (defueling/purging) shall be accomplished
shall be based upon the following factors:
a. Preliminary Hazard Analysis.
b. Operating Hazard Analysis.
c. Area of equipment being modiied.
d. Type of work being performed.
3.5.9.2 Operational checkout requirements. This subparagraph shall contain a statement that an operational
checkout of the system or equipment after retroit change (shall be accomplished/is not required) prior
to normal operations.
3.5.9.2.1 Operational checkout instructions. The instructions shall direct that upon completion of the work
required, an operational checkout (including functional check light) be performed, as appropriate, to
determine whether the affected equipment, parts or systems operate properly. Procedures for accomplishing
the operational checkout, including necessary test tapes and computer programs, shall be provided if not
already covered in an existing technical manual. Such instructions shall be limited to those required for one
time use to check out the installation of the retroit change. If procedures are provided in an existing
technical manual, appropriate reference shall be made.
Electronic presentation: References in the text shall be linked to the documents being referenced.
3.5.9.2.2 Operational checkout instructions appendix. When extensive operational checkout instructions,
test tapes or computer programs are required for modiied systems or equipment, which would preclude
publication in the basic content of paragraph 7 of the TCTO, these instructions may be prepared in the form
of an appendix to the basic TCTO, in accordance with MIL-STD-38784. When used, such an appendix shall
form an integral part of the basic TCTO. A statement shall be included that the instructions are for one time
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