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Aviation Maintenance Technician General (AMG) Knowledge Test
Find the current format, timing, scoring, fees, eligibility, and testing options for AMG, with direct links to official sources.
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Questions60 questions (scored); the published count excludes unscored validation questions, which may be added to any Matrix test and do not count for or against the final score
Testing time2 hours
ScoringMinimum passing score of 70% (score of 70% or greater required)
Exam feeUSD 175 per test (PSI's published price for an FAA Airman Knowledge Test voucher, plus applicable tax); the FAA FAQ states fees are charged by the commercial FAA-approved testing centers and refers candidates to PSI for testing fees; JSAMTCC-eligible military-affiliated candidates may test at no cost
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Exam overview
What to know before choosing your prep
- Who runs it
- FAA
- Category
- Aircraft Maintenance
- Current version
- AMG (Aviation Maintenance Technician General) knowledge test examined against FAA-S-ACS-1, the Aviation Mechanic General, Airframe, and Powerplant Airman Certification Standards dated November 1, 2021 (incorporated by reference into 14 CFR part 147); current test parameters are published in the FAA Airman Knowledge Testing Matrix revised 10/22/2025
- Where it applies
- United States — national
- Exam languages
- English
- Testing provider
- PSI (PSI Services — the FAA's testing partner that delivers Airman Knowledge Tests at authorized PSI test centers)
- Format
- Computer-based, delivered in person at authorized PSI test centers
- Availability
- Year-round by appointment at authorized PSI test centers; candidates schedule through PSI's FAA testing portal after obtaining an FAA Tracking Number (FTN) — testing-center hours vary by location
- Remote testing
- Not available
Exam structure
One 60-item, objective multiple-choice knowledge test covering the 12 General subject areas of ACS Section I (General): Fundamentals of Electricity and Electronics; Aircraft Drawings; Weight and Balance; Fluid Lines and Fittings; Aircraft Materials, Hardware, and Processes; Ground Operations and Servicing; Cleaning and Corrosion Control; Mathematics; Regulations, Maintenance Forms, Records, and Publications; Physics for Aviation; Inspection Concepts and Techniques; and Human Factors. The General test is the first of the three required AMT knowledge tests, followed by Airframe and/or Powerplant; the certificate also requires separate oral and practical tests administered by a Designated Mechanic Examiner
Where rules vary
U.S. federal airman certification: the mechanic certificate and its knowledge tests are prescribed by 14 CFR part 65, subpart D (Mechanics) and are uniform nationwide; delivery vendor PSI notes 'a nationwide testing network' plus coverage maps for U.S. states and territories; the FAA FAQ states foreign applicants located in the U.S. 'need to meet the same requirements as a citizen of the U.S.'
Eligibility
Authorization to test plus eligibility: minimum practical experience of 18 months per rating sought (or 30 months concurrent for both) — or graduation from an FAA-certificated AMTS or completion of the JSAMTCC military course; experience-route candidates must present a completed FAA Form 8610-2 to an FAA inspector (ASI) at a FSDO, AMTS graduates present their graduation certificate, and military applicants a Certificate of Eligibility; an FAA Tracking Number (FTN) obtained via IACRA is required before scheduling with PSI; applicants must meet 14 CFR part 65 eligibility (at least 18 years old and able to read, write, speak, and understand English)
Retake policy
After failing, an applicant may apply for retesting 30 days after the failed date; the 30-day wait is waived if the applicant presents a signed statement from an airman holding the certificate and rating sought certifying additional instruction in each failed subject; the failed Airman Knowledge Test Report (AKTR) must be submitted to the testing center before retesting