Learn About A and P Licenses and Requirements

Understanding A and P Licenses: What They Are and Why They Matter

An A and P license refers to an Airframe and Powerplant mechanic certificate issued by the Federal Aviation Administration (FAA). This certification shows that a person has the knowledge and skills to maintain, repair, and inspect aircraft and their engines. The "A" stands for Airframe, which covers the fuselage, wings, landing gear, and all structural components of an aircraft. The "P" stands for Powerplant, which refers to the engines and related systems that make the aircraft fly.

These licenses are separate ratings that can be obtained independently or together. Some mechanics hold only an A license, some hold only a P license, and many hold both, which is often called holding your "A&P." The rating demonstrates to employers, regulatory bodies, and the public that the mechanic meets federal standards for aircraft maintenance and repair work.

The FAA created these certification requirements to ensure aircraft safety. Every commercial aircraft must be maintained by technicians who hold the appropriate certifications. This is not a voluntary standard—it is a legal requirement that protects passengers and crew members. Aircraft maintenance is critical because even small errors can have serious consequences for flight safety.

The A and P license has existed since the 1920s, though the requirements have evolved significantly over time. Today, holding these certifications opens doors to careers in commercial aviation, military aviation, general aviation, helicopter maintenance, and various other aviation-related fields. Mechanics with A and P licenses work at major airlines, regional airports, maintenance facilities, and aircraft manufacturing companies.

Practical takeaway: Understanding what an A and P license represents—a federally recognized certification in aircraft maintenance—helps you recognize why this credential matters in the aviation industry and what career paths it can lead to.

Educational Requirements and Training Paths

To work toward an A and P license, individuals must first complete formal training. There are several ways to obtain this training. The most common path is attending an FAA-approved aviation maintenance technician school. These schools offer structured programs that teach both the theoretical knowledge and hands-on skills needed for aircraft maintenance. Programs typically take 18 to 24 months to complete, depending on whether you pursue an A rating, a P rating, or both A and P together.

Another pathway involves gaining work experience under the supervision of a currently certified A and P mechanic. The FAA allows individuals to accumulate practical experience hours as an alternative to formal schooling, though this path takes significantly longer. For example, to meet the experience requirement for an A license through work alone, a person typically needs 3,000 hours of practical experience in specific areas of airframe maintenance. For a P license through work alone, 3,000 hours are needed in powerplant work. If combining both ratings, the total experience requirement is 5,000 hours.

Many people use a combination approach: they attend an FAA-approved school for part of their training, then gain additional hands-on experience working under certified mechanics. This hybrid method allows people to gain knowledge quickly in a classroom setting while building practical skills on the job. Some employers prefer hiring people who have completed formal schooling because it demonstrates a baseline level of knowledge.

FAA-approved schools are located throughout the United States and offer different program formats. Some schools are part of community colleges or technical institutes, while others are standalone aviation maintenance schools. These schools must meet specific FAA standards for curriculum, equipment, facilities, and instructor qualifications. When researching schools, you can verify FAA approval by checking the FAA's list of certificated repair stations and schools on their website.

Practical takeaway: You have multiple legitimate pathways to obtain an A and P license—through formal schooling, work experience, or a combination of both—and the time commitment and costs vary depending on which path you choose.

Knowledge and Practical Testing Requirements

Once you have completed the required training and experience, the next step involves passing a series of tests administered by the FAA. The testing process has three main components: a written test, an oral test, and a practical test. Each component must be passed separately, and each tests different aspects of aircraft maintenance knowledge and skills.

The written test, called the Knowledge Test or written exam, covers theoretical knowledge of aircraft systems, maintenance procedures, federal regulations, and safety practices. For the A rating, the written exam focuses on airframe structures, systems, and maintenance. For the P rating, the written exam emphasizes engine design, operation, troubleshooting, and repair. The written tests are typically 80 to 100 questions long and must be completed at an FAA-approved testing center. You need to score at least 70 percent to pass.

The oral test involves a conversation with an FAA examiner called an Oral and Practical (O&P) examiner. During this test, the examiner asks detailed questions about aircraft maintenance procedures, troubleshooting techniques, regulations, and safety. The examiner might ask scenario-based questions like "What would you do if you discovered metal shavings in an engine oil filter?" or "Walk me through the inspection process for landing gear components." This test typically lasts 2 to 4 hours and assesses both your knowledge and your ability to communicate technical information clearly.

The practical test, also known as the practical exam or checkride, requires you to demonstrate hands-on skills. You will be asked to perform actual maintenance tasks on aircraft or aircraft components while being observed and evaluated. The examiner watches how you use tools, follow procedures, troubleshoot problems, and ensure safety. For example, during an airframe practical test, you might be asked to inspect a fuselage section for corrosion, perform a hydraulic system inspection, or demonstrate proper rivet installation techniques. During a powerplant practical test, you might need to remove and inspect engine components or demonstrate proper engine assembly procedures.

Practical takeaway: Passing an A and P license requires demonstrating knowledge through written and oral exams, plus proving you can actually perform maintenance work through practical testing—this multi-part assessment ensures that certified mechanics truly understand both the theory and practice of aircraft maintenance.

Experience Hours and Documented Work Records

The FAA has specific requirements about the types and amounts of work experience needed for an A and P license. These requirements exist to ensure that people seeking certification have actually worked on real aircraft and understand how maintenance is performed in practice. The experience cannot be casual or informal—it must be documented, verifiable, and performed under the supervision of someone already certified.

For those pursuing the A (Airframe) rating, you need 1,000 hours of hands-on work performing airframe maintenance tasks. These hours must involve actual work on aircraft structures, systems, components, or assemblies. Examples include inspecting and repairing fuselage damage, maintaining flight control surfaces, working on landing gear systems, installing and inspecting windows, or performing fabric work on aircraft wings. The work must be documented in a logbook or training record that shows the date, hours worked, and nature of the work performed.

For those pursuing the P (Powerplant) rating, you need 1,000 hours of hands-on work performing powerplant maintenance tasks. This involves work specifically related to aircraft engines and engine systems. Examples include engine overhaul, component inspection and repair, fuel system maintenance, ignition system work, lubrication system maintenance, and cooling system repairs. Again, these hours must be documented and verified.

If you are pursuing both the A and P rating simultaneously through an FAA-approved school, the total requirement is typically 1,900 hours spread between both areas. If pursuing them separately at different times, the requirements are additive—1,000 hours for each rating. Some FAA-approved schools structure their programs so that graduates meet these hour requirements upon completion. Students in these programs earn their hours through the school's curriculum and documented instruction.

The documentation of these hours is crucial because you must present verified records when you petition to take the FAA exams. Your employer or supervisor must confirm the hours, and in some cases, the FAA may request additional verification. Many people maintain a logbook similar to those used by pilots, recording each day's work activities and hours. This documentation becomes a permanent record of your aviation maintenance experience.

Practical takeaway: You must accumulate and document hundreds of hours of real aircraft maintenance work, and keeping accurate records of these hours is essential because the FAA will verify your experience before allowing you to test for certification.

Regulatory Standards, Rules, and Safety Requirements

Aircraft maintenance is governed by federal regulations found primarily in