MIL-DTL-87158C
3.5 Chapter 1, General information. This chapter shall provide general information relative to the speciic
weapon system and, as a minimum, shall contain the following sections:
Section I
General Information
Section II
Mission Identiication
Section III
Damage Assessment
Section IV
Aircraft Zones
3.5.1 Section I, general information. Instructions on how to use the manual shall be provided for the
assessor and technician. Structure analysis methods, employed in generating the damage limits, shall be
provided for the ABDAR engineer, who may be tasked to provide additional engineering assumptions and
procedures which are not speciied in the manual.
3.5.2 Section II, mission identiication. This section shall identify each generic type mission as designated
for that particular weapon system (e.g., air-to-air, air-to-ground, tanker support). Missions shall be as
identiied by the light manual, or as identiied by the acquiring activity (see 6.2).
3.5.3 Section III, damage assessment. Damage limits, repair guidelines, instructions, and references to
applicable publications, which enable an assessor to make the correct deferment/repair decisions, shall be
provided. Previous data from damage levels on similar aircraft, vulnerability assessments, and system
criticality information from failure modes and effects analysis on the speciic aircraft, shall be used as a
guide in determining contents and scope of procedures to be addressed in the speciic ABDAR manual.
Flight operational limits shall be addressed after deferments/repairs assessments are made.
3.5.3.1 Fire and heat damage. Instructions on how to determine the degradation of material properties,
caused by ire and heat, shall be provided. A chart to show conductivity values and hardness readings for
materials used on the aircraft, when exposed to damaging ire or heat, shall be included. The chart shall
include procedures for quick determination of the extent of damage to ferrous, nonferrous, organic, and
inorganic composite materials (see igure 1). The chart shall identify those areas of the engine bays where
the integrity of ire walls must be maintained to prevent excessive heat damage. Allowable damage limits
shall be speciied, and any peculiar irewall repairs shall be included in the appropriate zone.
3.5.3.2 Weight and balance. Instructions for the assessor to determine the effects on weight and balance,
which signiicantly affects the center of gravity (CG) as a result of repairs on the aircraft, shall be provided.
3.5.3.3 Logic procedure. This section shall include an assessment logic tree that applies to
structure/system/components that pertain to the weapon system (see Figure 2).
3.5.4 Section IV, rotary wing/ixed wing aircraft zones. This section shall provide a three dimensional
illustration identifying rotary wing/ixed wing aircraft zones. A brief explanation of the selected rotary
wing/ixed wing aircraft zones shall be included. The zones shall be identiied by rotary wing/ixed wing
aircraft station numbers. These zones shall be selected such that they are essentially repair-independent
and physically distinct, based on structural features/equipment commonality. When all the zones are put
together, the results shall be a complete rotary wing/ixed wing aircraft. The zones shall be identiied by
rotary wing/ixed wing aircraft station numbers.
example of rotary wing/ixed wing aircraft zones).
3.6 Chapter 2, system descriptions. This chapter shall contain a brief description of the aircraft systems.
Each description shall include a reference to the applicable maintenance manual. This chapter shall also
include diagrams, drawings, and schematic illustrations, as necessary.
Print presentation: A brief description of the aircraft systems shall be approximately one page or less.
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