notes

2. LESSON OBJECTIVE
AT THE END THE OF THE LESSON,THE
STUDENT SHOULD BE ABLE TO CORRECTLY;-
1. EXPLAIN WHAT IS MAINTENANCE
2. DESCRIBE DEFFERENT TYPES OF
MAINTENANCES

3. LESSON SCOPE
1.ANALYSIS OF MAINTENANCES.
•Routine Maintenance
•Planned maintenance
•Schedule Maintenance
•Breakdown Maintenance

4. MAINTENANCE
INTRODUCTION.
• Maintenance is the process of preserving a condition or situation or
the state of being preserved.

5. TYPES OF MAINTENANCE
i. Routine Maintenance
ii. Planned maintenance
iii.Schedule Maintenance
iv. Breakdown Maintenance

6. ROUTINE MAINTENANCE
• Usually a small scale activity to keep a piece of
machinery or equipment in good working order.
•Popular Terms
Simple, small-scale activities (usually requiring only
minimal skills or training) associated with regular
(daily, weekly, monthly, etc.) and general upkeep of a
building, equipment, machine, plant, or system
against normal wear and tear.

7. ROUTINE MAINTENANCE CONT--------
• Attributes
Routine maintenance has the following general attributes that
distinguish it from other forms of maintenance:
• The routine is most commonly based on fixed intervals of time, such
as “every x hours of machine time”, “every x days”.
• It usually occurs quite regularly, since as daily, weekly, monthly or
quarterly.

8. PLANNED MAINTENANCE
Planned maintenance (PM) or scheduled maintenance, is any variety
of scheduled maintenance to an object or item of equipment.
Specifically, planned maintenance is a scheduled service visit carried
out by a competent and suitable agent, to ensure that an item of
equipment is operating correctly and to therefore avoid any
unscheduled breakdown and downtime.[1]

9. planned maintenance --------
planned maintenance comprises preventive maintenance, in which the
maintenance event is preplanned, and all future maintenance is
preprogrammed. Planned maintenance is created for every item
separately according to manufacturers recommendation or legislation.
Plans can be date-based, based on equipment running hours, or on the
distance travelled by the vehicle. A good example of a planned
maintenance program is car maintenance, where time and distance
determine fluid change requirements. A good example of condition-
based maintenance is the oil pressure warning light that provides
notification that you should stop the vehicle because engine lubrication
has stopped and failure will occur.

10. Breakdown Maintenance
• Definition - What does Breakdown Maintenance mean?
• Breakdown maintenance is a form of material or equipment
remediation that is performed after the equipment or material has
lost its functioning capabilities or properties. Breakdown maintenance
is often the last resort in an attempt to restore or extend the life of a
given asset.
•
• Breakdown maintenance is maintenance performed on equipment
that has broken down and is unusable. It is based on a breakdown
maintenance trigger. It may be either planned or it can be unplanned.

11. Breakdown Maintenance CONT-----
Breakdown Maintenance is referred to repair and maintenance
work performed on a machine, production plant or component, be it
mechanical or electrical after it has failed or broken-down unexpectedly. It is
also referred to as maintenance or engineering work related to unforseen
plant breakdowns. It is not a planned event and as such can cost the factory
lost production and sales as well as other expenses such as out of budget
maintenance costs including overtime, technician call outs and urgent
delivery fees for spare parts or support.
Maintenance breakdowns can have many causes, some being the result of
improper preventive and long term maintenance planning, lack of plant
inspections, lack or incorrect evaluation of stresses and load cycles on
machinery, faulty design and materials and in some cases neglect.

12. SUMMARY
The types of maintenance done comms and navs equipments are :
-Routine maintenance
-Planned /scheduled
-Breakdown maintenance

13. Q&A
OK, what did I not make perfectly clear?

14. LESSON OBJECTIVE
AT THE END THE OF THE LESSON,THE
STUDENT SHOULD BE ABLE TO CORRECTLY;-
1. EXPLAIN WHAT IS MAINTENANCE
2. DESCRIBE DEFFERENT TYPES OF
MAINTENANCES

15. REFERENCE
STUDENTS NOTES

16. TAKE HOME
Q1.List three types of maintenances.
Q2.Briefly explain one type of maintenance.
Q3. Give six advantages of maintenance on aircraft communication and
navigation systems.