Section I contains the introduction and general information pertaining to the AH-64A helicopter and Nondestructive
Inspections. Sections II through VI contain detailed inspection procedures for specific items located within each system.
In general, inspection items are grouped with respect to part location and function. To use the manual, it is necessary to
know the system and name of the inspection item.
When the system and part name are known:
Turn to the applicable section of the manual covering that system. Refer to the group inspection index table at
the beginning of the section. If the item is listed, the corresponding paragraph and figure number will be referenced in
Turn to referenced inspection paragraph and figure for detailed inspection information.
Inspection Item Code. When inspection items, due to their proximity, are grouped in one illustration, the figure
will be indexed using the inspection item code. This code consists of digits separated by dashes. In the text, the
inspection item is identified as follows:
The first digit refers to the section of the manual in which the item appears. Example:
Paragraph 2.5 is found in Section II.
The second digit refers to the item number or order that the part procedure occurs in the manual section.
Example: Paragraph 2.5 refers to item or procedure 5.
Use of NDI Symbols. Nondestructive inspection symbols and their application to detail inspection figures are
shown in Figure 1-1. In the main figures of each section, NDI symbols representing the type of inspection associated
with a part will appear next to the item number on the figure.
Use of Reference Publications. This manual is applicable to the AH-64A helicopter. The technician shall be
responsible for using the applicable referenced TM for the helicopter being inspected.
Related Publications. Supporting TMs and reference materials are listed in Table 1-1.
Description. The AH-64A advanced attack helicopter is a twin engine helicopter designed specifically for the
attack helicopter role. The helicopter accommodates an aircrew of two in a tandem configuration. The helicopter
delivers various combinations of ordnance while providing maximum helicopter survivability and aircrew protection.
Maximum helicopter survivability is achieved by providing redundant systems/components ballistic resistance, high
impact survivability, reduced detectability, and wire strike protection. The wings provide mounting surfaces for four
external pylons, which can carry external fuel tanks, point target missiles, 2.75-inch folding fin aerial rocket launchers, or
a symmetrically loaded combination of any two weapon racks.
The helicopter is powered by two T700-GE-701 orT700-GE-701C engines which drive the main rotor through individual
engine nose-mounted gearboxes and a main transmission. The main transmission power takeoff shaft drives the tail
rotor through intermediate and tail rotor gearboxes.