What is an Aviation Power Relay and its Repair Solution?

1
What is an Aviation Power Relay and its Repair
Solution? Almost each aircraft is fitting with
aviation relays. These relays control large
currents flow while utilizing the power of the
small currents. These control currents that
range from high amperage accessories like
starter, battery, lights, electrical actuators,
or hydraulic pumps. These are electrical
components, particularly in use for controlling
the flow of power in different systems on an
aircraft and are also responsible for switching
power on or off to components or subsystems and
are used to protect from damages happening due
to over currents or electrical faults. Some
Components of Power Relays Are Main Power
Relays These connect and disconnect different
sources of power like batteries or generators
from varied electrical systems on the
aircraft. Auxiliary Power Unit Auxiliary Power
Unit is used for controlling the APU operations.
It is a gas turbine engine to give electric power
and air conditioning when the aircraft is
standing on the ground. Starter Relays These
are used for starting the aircrafts
engines Landing Gear Relays Landing gear relays
control the extension and retraction of the
airplane's landing gear. Flap and Slat Relays
These are used to control the extension and
retraction of the aircraft's flaps, and slats
also are used to increase lift during takeoff and
landing.
2
There are also many other types of power relays
used in aircraft, and their functionalities and
characteristics can vary depending on the
aircraft and the system. However, NAASCO is
coordinating with other aircraft to create a
cost-effective repair process for power relay
piece parts. As the brand name Sim Met repair
solutions, the company developed cost-effective
solutions for the relay contacts in their Boeing
727 aircraft. The repair process is flawless,
offering amicable repair solutions. The Sil-Met
contact procedure can save the company thousands
of dollars otherwise levied for maintenance
charges. The company has till now repaired
thousands of relays, contactors, and terminal
boards for global customers. Each product is
refurbished instead of buying new and filling
landfills with non-repaired units. However, the
repair of power relays depends on many different
factors and the nature of the problem. Broadly
below are the steps involved in the repair of
power relays Switch off the Power Before
starting any repairs, the best is to switch off
the power supply to the equipment to prevent
accidents from happening. Remove the Relay
Remove the relay from its panel, which involves
disconnecting wires and removing fasteners that
keep the relay in place, Detect Relay Once you
have removed the relay, inspect it to find any
damage or signs of its wear and tear. Check the
signs for any corrosion or damage to the relay
or its components. Change Faulty Parts If you
find any component of the relay faulty, like a
defective coil or contact, they require
replacing and also might need soldering or other
particular skills. Clean the Relay After
completing the repairs of replacing the faulty
parts, the best is to clean it to remove any
contaminants that would interfere with its
3
operations, After reassembling and testing the
relay, it is best to repair and clean it. You
need to reassemble parts, do requisite testing,
and finally reinstall it to its original
position and reconnect the disconnected
wires. It is pertinent to note that these
aviation relays repairs can be complex and
require specialized knowledge and tools.
Cutting-edge technologies allow contacts, power
relays, and terminal boards to get renewed,
repaired, and kept back into service. The power
relay uses Sil-Mets procedures for operations in
commercial and military aircraft and helicopters.