Aircraft Maintenance

Jet turbine maintenance

Aircraft Maintenance

AEROGROUP Inc. maintenance team adheres to all applicable FAA and manufacture specifications. Our team strives to maximize aircraft availability for our clients through planning and flexible maintenance. As aircraft owners ourselves, we remain cost-conscious; seldom is there only one solution to an expensive problem.

Common Maintenance Requirements for Turboprop / Jet Aircraft

Phase Inspection - Turboprop and jet aircraft require routine inspections of the airframe and engines. These inspections are called phase inspections and are mandated by the manufacturer. They can be done annually or on a longer term, and each aircraft is unique in its requirements.

Landing Gear Inspection - As the name implies, a landing gear inspection is an inspection of the landing gear. The frequency of the inspection depends on the number of landings the aircraft accumulates but can have a calendar time basis as well. The inspection includes complete disassembly, inspection, repair and reassembly of all landing gear components. Not all aircraft require the inspection but most turboprop and jet aircraft do.

Calendar Propeller Overhaul - The propeller overhaul is based on a calendar limit or time limit of operation. This overhaul includes removal, disassembly, inspection, repair, reassembly and reinstallation of the propeller. If damage is found, it can sometimes be repaired but if the damage meets certain criteria the blades may have to be replaced completely.

Wing Bolt Inspection - Specific to Beechcraft and in particular the KingAir series, the wings are held onto the fuselage with strong Inconel bolts. Because these bolts are so critical, every five years they must be removed and inspected. The wing attachment fittings also require inspection on a five year cycle. Every 15 years the wing bolts must be replaced.

Engine Hot Section - Turboprop and jet aircraft have turbine engines. These engines are very reliable but require inspection at certain time intervals. The hot section is the power producing part of the engine and as the name implies, is where the hottest part of the engine is. Normal time periods for this inspection are between 1500-2000 hours. The inspection can be performed with the engine still attached to the aircraft. Sometimes the inspection would require the removal of the engine if a more detailed review is required.

Engine Overhaul - Although jet and turboprop have considerable operating endurance, these engines don’t last forever. Assuming there has been no damage to the engine, an engine can make it to between 3000-3600 hours before it needs to be overhauled. This could represent 20 years of flying. An engine overhaul requires the removal of the engine. An overhaul includes the complete disassembly, inspection, repair, and reassembly of the engine components at an overhaul facility. The cost of an engine overhaul typically represents one of the most expensive items in aircraft ownership.

Avionics Maintenance & Upgrade - Avionics are continually being improved for functionality, ease of use, increased situational awareness and safety. With technological improvements, some avionics components that were cutting-edge at the time the aircraft was built are now obsolete. At times it can be cheaper to upgrade avionics than it is to repair an obsolete component already installed in the aircraft. Avionics can account for a significant cost in aircraft ownership and are routinely upgraded by owners during the life of the aircraft.
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