GENERAL INFORMATION AND ASSESSMENT
SECTION I. GENERAL
INTRODUCTION. During the first few days of
combat maximum aircraft availability is essential.
Aircraft will sustain varying degrees of damage during
combat operations. The damage must be assessed and
repaired as quickly as possible. Maximum availability
must be maintained for further sorties. In addition to the
combat damage, aircraft will have higher component
failure rates because of increased flying hours and
higher stress levels. Aircraft combat maintenance
battle-damage repair (ACM/BDR) is an operational
concept for maintaining aircraft at a high level of
procedures and methods must be modified to achieve
this. One method will be to defer all but the most
essential maintenance needed for the next scheduled
mission. They will often be flown with nonessential
components damaged, inoperative, or missing.
scheduled maintenance and inspections. However,
necessary lubrication, servicing; and operational checks
will not be deferred. When conditions permit, the
overflown" inspections will be completed. When
expedient repairs are made on the aircraft or repair of
damage is deferred, to ensure flight safety or mission
accomplishment, it may be necessary to schedule
Scheduled battle damage inspections of this type will
not be deferred.
Unscheduled Maintenance. Repair of systems
and subsystems which are not critical to mission
accomplishment, may be deferred unless they might
cause further damage. Items may be deferred even if it
places operational limitations on the aircraft, as long as
the restricted aircraft can accomplish designated
missions and can contribute to the battle. Deferment of
repairs for a one-time flight to a higher maintenance
level, or for self-recovery from a combat area, is highly
desirable. This eliminates the need for another aircraft
to accomplish the recovery, or the loss of the aircraft if
recovery is not available. The maintenance officer or
assessor will make the decision based on an analysis of
the overall situation and airworthiness of the aircraft.
Assessment. Aircraft which have battle damage
will be inspected and classified by a damage assessor
using a method similar to the medical concept of
"triage." Following assessment some aircraft will be
returned to service immediately through deferment.
Other aircraft will be repaired using approved battle
damage repair techniques. Those requiring extensive
repair (4 to 24 hours) will be set aside and repaired as
manpower and parts become available. Assessors will
be trained to identify and assess damage and failed
aircraft subsystems. They will learn isolation and repair
methods and procedures and serviceability standards.
PURPOSE. This manual provides information
and instructions for assessing and repairing battle
damage to the Army CH-47D Chinook helicopter. The
purpose of the manual is to assist the damage assessor
in identifying and classifying aircraft battle damage,
assessing the extent of damage, and determining if
repair can be safely deferred. Methods of expedient
battle-damage repair are also presented.
SCOPE. This manual is to be used to assess and
repair battle damage to the CH-47D helicopter. It is
intended for use by aviation unit maintenance (AVUM)
personnel during combat operations, and for training of
personnel. The procedures are to be used only during
combat operations or during periods of extreme
emergency. The commander determines when normal
maintenance procedures may be deferred. Repairs are
made using interim techniques, off-the-shelf standard
hardware (not necessarily aircraft related), and without
concern for appearance. As new repair procedures,
materials, tools, and equipment become available they
will be introduced and incorporated into this manual.
FORMS. RECORDS. AND RFPORTS.
Status Symbols. Status symbols used in aircraft
logbooks to record defects are defined below:
Red "X". A red "X" shows that a defect
exists and the aircraft is unsafe for flight.
Circled Red "X". A red "X" inside a red
circle indicates a limiting defect. The aircraft may be
flown under specific limits as directed by higher
authority, or as directed locally until corrective action is