The reliability of a structure depends on the quality of the materials and construction and adequacy of maintenance provided after installation. F.E.C. has a maintenance program, which involves planned inspections and repairs during the life of the structure. A typical inspection would cover the following:

- Loose or missing bolts	- Evidence of soil creep or landslides
- Fatigue cracking	- Settlement
- Damage from structual overload	- Earthing integrity
- Vandalism	- Auxiliary antennas, mountings and feed systems
- Corrosion on galavising steelwork	- Maintenance of safety facilities
- Degraduation of paint systems	- Site Security
- Vibration	- Guyed mast vertically twist
- Lightning Damage	- Navigation Lighting
- Foundation deterioration and cracking	- Condition of insulators
- Loose or damaged guy wires and fittings
- Ground surface erosion

The intervals needed for inspection need to be in tune with the operational environment and structural/service function needs of the structure. The interval between maintenance inspections will depend on the following factors:

- Corrosion potential of the environment and the degree of protection required for maintenance of design reliability.
- Importance of the structure to its service
- Severity of local conditions
- Sensitivity to structural response
- Grounding conditions

F.E.C. recommend that an interval between inspections should be between one and three years according to the relative importance of  the above factors.