Executive Turbine Engine Section is the only full-service PT6A overhaul workshop in South Africa .

Our emphasis on training, dedicated and loyal personnel, attention to detail, excellence in materials and workmanship provide superlative quality of the end product and leads us to constantly exceed the high standards set by the manufacturers.

We service the complete PT6A Engine series from –20 to 67D models, and are approved by the FAA and CAA - South Africa , Namibia , Kenya , Tanzania , Angola , Malawi and Botswana. ( Zambia C.A.A. approval scheduled later in October 2005 )

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A large selection of parts and accessories are held within a computerised, fully environmental controlled bonded parts department.

All incoming stock undergoes receiving inspection by licensed engineers who pay particular attention to quality, and certification. Release of items from the parts department is tightly controlled. All stock is tracked throughout the process.

Overhauled components such as fuel systems and propeller governors are readily available on an exchange basis or outright purchase. All rubber-based parts are stored in a light and environmental controlled section to minimise deterioration.

Professional on site defect diagnosis Rectification of FOD, sudden stoppage, lightning strike, over temperature and hot section inspections.

• Fuel Nozzle Routine servicing.
• Supply of engine parts – new, and accessories on overhaul/exchange basis.
• Weld repairs

• Cadmium, silver, tin, chromic anodizing, clear anodizing, gold, black oxide, nickel and bright nickel.
• Engine appraisals and pre-purchase inspections

• Engine removals and installations
• Prop balancing
• Jet cal – engine instrument calibration

On arrival prior to disassembly the engine receives external inspection for general condition and recording of all incoming components.

Parts enter the cleaning bay where they are segregated according to their material composition. Several chemical baths are used with temperature control for maximum effect. Parts are carefully monitored during the entire process. All chemicals are used according to specified requirements. The chemicasl are regularly tested and inspected by one of South Africa 's most reputable chemical companies.

As part of the overhaul process, coatings are stripped to facilitate visual inspection, as well as Non Destructive Testing at a later stage.

The cleaning process ensures that all engine components are in a state where inspection is unimpeded.

Inspection takes place in a dedicated room with special lighting and equipment. The inspection consists of using state of the art optical devices for perfect examination.

Dimensional inspection forms an important part of the process, utilising precision devices capable of measuring 0.0001mm. Digital imaging is also available for record purposes by means of a powerful microscope linked to a digital camera.

A second inspection, to establish serviceability status, is carried out on parts with borderline defects.

This important process takes place in a specially designed area in which conditions can be closely controlled to international specifications. This is also the final stage of inspection, where designated parts undergo a defined process that identifies defects not visible to the eye.

Engine components are subjected to Fluorescent Dye Penetrant and Magnetic Particle Inspection as detailed in the respective overhaul manual; both methods identify defects when subjected to Ultra-Violet light.

Inspectors are certified to the American Society for Non-Destructive Testing, which ensures high standards are met in this specialised field.

Each assembly area is equipped with factory designed tooling. To ensure precise workflow, one engineer follows the entire assembly process, each building one engine at a time.

Sequential inspections take place during assembly by licensed engineers at several key points. This ensures continuity of work without uncertainty.

The engine reduction gear compressor module and power turbines are dynamically balanced using computorised vertical and horizontal machines specially equipped for aviation standards.

This final phase of the overhaul takes place in a fully FAA/SACAA approved and correlated dynamometer test cell. The cell is capable of accommodating all PT6 engines up to 1650 horsepower. It also makes use of the latest electronic equipment technology to ensure the best possible accuracy during all testing.

The test cell has a fully computerised data acquisition system used to monitor and record all engine outputs. In addition, detailed vibration analysis equipment records vibration levels in the engine.

Testing ensures that the engine complies with or exceeds the manufacturer's requirements after overhaul. Within the manufacturer's specified performance limitations, an engine can be built and tested to suit a client's particular operational requirement. At all stages of the overhaul and testing, the client is welcome to visit and witness the procedure.

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