2-1. General. The field of Nondestructive Inspection (NDI), testing, and flaw detection is varied and complex.
It cannot be covered in detail in this volume. This chapter will provide a brief description of the various, methods
available, shop and personnel requirements, and an explanation of special terms. The effectiveness of a particular
method of testing and inspection depends upon the skill, experience, and training of the mechanic doing the test.
Additionally, each method is limited in its usefulness as an inspection tool by its adaptability to the component being
2-2. General Shop Rules. The practices and procedures described in this chapter pertain to the repair functions of
aviation activities and are applicable to all levels of maintenance Because of the many types of Army aircraft, each shop
within the manufacturing and repair section must, of necessity, have personnel trained in general practices and
procedures to the extent that different type and model aircraft do not upset a smooth running shop.
Responsibility. All supervisory personnel in the manufacturing section are responsible for a continuing and
effective shop safety program. To implement and maintain this program, shop supervisors will utilize bulletin boards,
signs, and any other effective method. Shop personnel will cooperate In the shop safety program by making helpful
recommendations and continually exercising care and caution in the operation of all shop equipment. All shop personnel
will strive to improve the safety program and be especially alert to observe and correct hazardous conditions and unsafe
shop practices. All accidents, no matter how minor, shall be reported to the shop supervisor, and all published
instructions regarding safety shall be strictly adhered to. Also, safety engineers and safety officers will ensure that proper
safety procedures are adhered to in accordance with AR 385-10, Army Safety Program; AR 385-30, Safety Color Code
Markings and Signs, AR 385-32, Protective Clothing and Equipment; The Occupational Safety and Health Act of 1971,
OSHA 1910.251; all applicable fire codes, NFPA 410; and other accepted civilian and military safety practices.
Shop Housekeeping. Housekeeping is the yardstick by which the shops in the manufacturing section are judged.
A clean, well-arranged shop is a safe shop and reflects credit on all personnel concerned with Its operation. The
following shop practices shall be observed.
Oil pans or drip pans shall be used where leaking oil, grease, and similar material may cause hazardous
accumulations on equipment or floors. All spills shall be cleaned up immediately Approved sweeping compound may be
used to remove these materials from the floor.
Floors shall not be cleaned with volatile or flammable liquids. A flammable film may remain and
cause a fire hazard.
Floors shall be maintained smooth and clean, free of all obstructions and slippery substances Holes and
irregularities In floors shall be repaired to maintain a level surface free from tripping hazards
All unnecessary materials on walls shall be removed and projections shall be kept to a minimum
Aisles shall be clearly defined and kept free of hazardous obstructions. Where possible, aisles shall be
suitably marked by painting.
All machines, work benches, aisles, etc, shall be adequately illuminated
Shop safes. Unsafe equipment and fire hazards are the main factors to be observed while planning safety
Equipment safety. Unsafe equipment shall be reported immediately. The following equipment safety
practices shall be observed:
Machines shall be located to provide operators with sufficient space to handle materials and perform
job operations without interference
Bolt down all machinery that can move or walk due to vibration (drill press, bench grinder, etc ).