Processes & Quality

Processes & Quality

In order to provide ever more effective services for its customers, CRMA constantly tailors its technical resources to market requirements.

Currently, CRMA is one of the few engine shops to offer a comprehensive portfolio of specialized, innovative engineering and maintenance resources designed for the all-round repair of new-generation engine parts and modules such as the latest CFM powerplants and the GE90 and GP7200 Very Big Engines.

Quality of service provision is a priority for CRMA. To guarantee the highest levels of performance and flight safety, CRMA is constantly improving the quality of its systems, products, services and processes.

Thermal treatments

Thermal treatments
  • Three large-capacity vacuum furnaces with heating temperature rates of 40°C/minute, for the repair, among others, of GE90 engine parts,
  • Two local heat treatment positions,
  • Expertise in all heat treatments on our products.

Thermal spraying

Thermal spraying
  • Four multi-coat robots (bi-process: plasma and combustion flame), 
  • Two electrical arc installations for thermal spraying of metal coatings, 
  • Cold process TBC and polyester-coated aluminum.

Spark machining

Spark machining
  • New generation computer-controlled machine for working honeycomb materials,
  • Installation directly integrated into the honeycomb parts product line.

Laser drilling

Laser drilling
  • High-power pulsed laser drilling (up to 45kW) whose specific integration and six axes deliver large-scale modularity,
  • A dedicated laser for drilling new-generation multi-hole combustion chambers with a thermal barrier coating,
  • CRMA is the only operator, apart from GE, to have GE90 outer liner approval.

Shot blasting

Shot blasting
  • Large capacity shot blasting machine with a six-axis robot plus one additional axis controlled by computer and a supervisor,
  • Absolute precision and repetitiveness guaranteed to meet technical specification requirements for working aircraft parts.

Waterjet stripping

Waterjet stripping
  • Large-capacity machine featuring ultra-high-pressure (60,000 psi) waterjets,
  • Controlled from computerized supervision station fully compliant with environmental requirements.

Laser welding

Laser welding
  • Large capacity CO2 laser welder to work with our in-house applications,
  • Machine notably used on combustion chamber and casing repairs.

Non-destructive testing

Non-destructive testing
  • Electrostatic penetrant and immersion inspection,
  • X-ray inspections with directional and panoramic tube heads,
  • Ultrasound inspection equipment,
  • New generation supervisor-operated rectified AC/DC magnetic particle inspection test bench compliant with OEM requirements,
  • Products used are fully compliant with environmental standards.

Surface treatment

Surface treatment
  • Large capacity robot cleaning line (5,000-liter tanks) compliant with OEM specifications,
  • System connected to zero-discharge wastewater treatment plant compliant with environmental requirements of DRIEE and Agence de l’Eau agencies.

Automatic welding

Automatic welding
  • Two multi-axe machines (Dabber TIG process) delivering the ideal weld quality essential for welding lip seals,
  • Modular systems with plasma welding process that can be fitted with an orbital welding head.

Painting

Painting
  • Controlled hygrometry facilities for the application of organic and non-organic paints,
  • Polymerization oven,
  • Thickness and roughness tests.

RTV

RTV
  • Injection machine,
  • Computer-controlled for absolute precision and repetitiveness of mixtures.

Machining

Machining
  • Large-capacity machining,
  • Computer or manual control for machining parts with complex geometries (vertical and parallel lathes, large-capacity vertical grinding machines, jig borers, boring machines).

Dimensional inspection

Dimensional inspection
  • Two 3D machines,
  • Tool eyes integrated into our product lines for process optimization.

Machining process - 5 axis machines

Machining process - 5 axis machines
  • Two 5-axis machines for the treatment of the most complex parts

  • High capacity of machining until Dia 1800
  • Machining of some specific parts on combustor and TCF

CRMA has undertaken to nurture and build in to all its aviation activities a safety culture that acknowledges the importance and value of effective production for flight safety.

To continuously improve quality, a management by quality approach helps solve problems and improve processes.

That’s why our policy is driven by a three-pronged continuous improvement approach:

  • The guarantee that our organization and services place flight safety, before business or commercial imperatives,
  • The guarantee of audits, inspections and strict oversight of the quality system with the wholehearted involvement of everyone at CRMA.,
  • The guaranteed application of an innovation and continuous improvement program designed to deliver services with the optimum quality level (Zero Defect, Once-and-Done philosophy).

The annual review of the Quality Improvement Plan and monitoring of Key Performance Indicators guarantee that the Quality Plan is effectively implemented and corresponds to developments related to CRMA’s internal and external environment.

Key Performance Indicators tracked by CRMA:

  • Returns under warranty,
  • Internal non-conformities,
  • Oversight of sub-contractors,
  • Supervision plans.

Feedback, the development of new processes and monitoring of indicators continually feed into the Continuous Improvement Plan.

Our Quality-centric approach is also an integral part of our repair processes (Lean 6 Sigma, Lean Manufacturing processes etc.) on the product lines specific to certain parts: GE90 and GP7200 Turbine Center Frames; CFM, CF6, GE90 / GP7200 Combustion Chambers; CFM and GE Combustion Casings; CFM and GE90 honeycomb parts; CFM and GE90 BP Boosters; Harnesses; VBVs; Brakes.

CRMA has developed a real-time production monitoring computer application that optimizes flow management and TAT tracking.