only. Fresh water condensation does far less damage
than entrapped salt spray.
In emergencies where regular waterproof canvas
covers are not available, use a polyethylene sheet,
polyethylene-coated cloth, or metal foil barrier
materials as covers and shrouds. Hold these covers in
place with adhesive tape that is designed specifically
for severe outdoor applications.
The MIM for an aircraft usually describe brief and
simple ground-handling procedures. When followed,
these procedures reduce corrosive attack. These
procedures keep water, salt, and dirt out of areas that
are difficult to get at and easy to overlook. As you can
see, they also save a tremendous amount of
maintenance work later.
Many practices, when followed, lessen paint
damage and the loss of built-in protective systems
during normal ground handling of the aircraft. Some
of these practices are listed below.
Use the tie-down points provided. Much damage
is done to aircraft paint films by failure to use the
tie-down points or by passing tie-down cables and lines
over or around supporting structures so the paint finish
is worn, chipped, or broken.
Take time to wipe or brush sand or gravel from
shoe soles before climbing on the aircraft. Painted
aircraft surfaces will withstand a normal amount of foot
traffic and abrasion by fuel hoses and air lines.
However, shoe soles and fuel hoses pick up bits of sand,
gravel, and metal chips. These become a coarse abrasive
that scratches and scuffs the protective finish so it is
completely ineffective under shipboard operating
Do not place removed hardware on the deck.
When you remove cowling and access plates during
inspections and you cannot provide pads or cushions for
them, secure them to prevent their movement.
Avoid scratching the paint when you use hand
tools to remove screws and quick-opening fasteners on
aircraft exteriors. As little as 5 minutes of extra time
spent carefully using tools might save hours of paint
touch-up and corrosion removal.
Why should dry-cleaning solvent not be used in
oxygen areas or around oxygen equipment?
Q33. In emergencies when regular waterproof canvas
covers are not available, what materials can you
use as covers and shrouds?
Q34. The ground handling requirements for an
aircraft can be found in what publication?
RECOVERY AND RECLAMATION OF
CRASH DAMAGED AIRCRAFT
LEARNING OBJECTIVE: Identify
publications used to describe emergency
General procedures are required anytime an
aircraft is exposed to gross amounts of saltwater or
fire-extinguishing agents. Each activity that is
assigned custody of aircraft has a recovery and
reclamation team. The size and composition of the
team depend upon the urgency of the situation. As a
maintenance crew member, you may be called upon to
assist with reclamation of an aircraft. Recovery and
reclamation procedures are covered in detail in
Methods for cleaning support equipment (SE) are
different from those used to clean aircraft. Authorized
SE cleaning materials and procedures are identified in
Ground Support Equipment Cleaning and Corrosion
Control, NAVAIR 17-1-125.
Q35. What technical publication covers emergency
reclamation procedures for naval aircraft?
LEVELS OF AIRCRAFT
LEARNING OBJECTIVES: Describe the
levels of aircraft and engine preservation.
Identify the preservatives and sealants used in
the preservation of aircraft and support
The exposure of an aircraft to corrosion damage is
greatest when the aircraft is dirty, inactive, or being
shipped. Aircraft spend more time on the ground than
in the air, even in an active squadron. Therefore, they
must be effectively protected. The method of
preservation is based on complexity of the aircraft. A
variety of methods are used to preserve aircraft.
Preservation applies to all types of naval aircraft.
There are three different levels of preservation used on