Behind every safe flight is a team of certified professionals working diligently to ensure aircraft remain airworthy, efficient, and compliant. Among these specialists, B1 and B2 engineers play critical roles in aircraft maintenance, particularly within the MRO (Maintenance, Repair, and Overhaul) industry.

But what’s the difference between B1 and B2 engineers, and who truly keeps your aircraft flying? Let’s explore.

B1 engineers are licensed to maintain and certify the mechanical components of the aircraft. Their expertise lies in the airframe, engines, landing gear, and hydraulic and pneumatic systems.

Key responsibilities of a B1 engineer include:

• • Inspecting and maintaining engines and structural elements
  • Performing mechanical system troubleshooting and repairs
  • Conducting functional tests on fuel, hydraulic, and pneumatic systems
  • Certifying mechanical work post-maintenance

B1 engineers often work hands-on with the aircraft on the ramp or in the hangar, and their license allows them to issue certifications for the mechanical integrity of the plane.

B2 engineers, on the other hand, focus on avionics and electronic systems. Their expertise covers communication, navigation, radar, autopilot, and electrical systems.

Core responsibilities of a B2 engineer include:

• Maintaining and repairing electronic and electrical systems
• Diagnosing faults using complex test equipment and software
• Ensuring all avionics systems comply with safety regulations
• Certifying avionics systems after repairs or upgrades

B2 engineers are often the “brains” behind the cockpit systems, making sure all digital instrumentation and automated functions are working flawlessly.

Though their skill sets differ, B1 and B2 engineers work hand in hand to ensure the complete airworthiness of an aircraft.

• B1 handles the muscle—airframe, engines, and physical components.
• B2 ensures the mind—all electronic and automated systems—operates correctly.

Together, they form a complete maintenance solution. In many complex operations, especially in commercial aviation, both types of engineers are essential.

The MRO industry depends on certified engineers to maintain safety and efficiency across global fleets. Airlines, OEMs, and MRO providers all rely on B1 and B2 engineers to:

• Prevent costly AOG (Aircraft on Ground) situations
• Ensure aircraft meet regulatory compliance
• Optimize performance and reduce operational risks

With growing fleets and the increasing complexity of modern aircraft, the demand for skilled B1 and B2 engineers has never been higher.

Are you a certified B1 or B2 engineer looking for your next challenge? Poente Technical, a leading MRO group operating across Europe, is currently hiring for positions in Toulouse, France. The role involves working on ATR aircraft.

We offer competitive terms, a collaborative working environment, and the opportunity to grow within one of the continent’s most respected maintenance organizations.

Apply now and send your CV or questions to jovana.j@poentetechnical.com to become part of a dynamic team shaping the future of aviation maintenance.

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