The current FAA ATP test matrix
As of 2026, the FAA's ATM test has 125 scored questions in 3.5 hours, while ATS has 90 scored questions in 2.5 hours; both require 70% to pass. The two tests are not interchangeable, so confirm the code that matches the certificate sought before scheduling.
| FAA code | Test name | Questions | Minimum age | Time | Passing score | Initial authorization |
|---|---|---|---|---|---|---|
| ATM | Airline Transport Pilot Multiengine Airplane | 125 | 18 | 3.5 hr | 70 | ATP-CTP graduation certificate |
| ATS | Airline Transport Pilot Single Engine Airplane (135) | 90 | 21 | 2.5 hr | 70 | No instructor endorsement or other written authorization required |
The FAA may add unscored validation questions. They do not count for or against your result and are not included in the published question totals above.
Last verified: 2026-08-07 · date_retrieved: 2026-08-07. Primary sources: FAA Airman Knowledge Testing Matrix and FAA ATP Certification Training Program.
Choose the test that matches the certificate sought
ATM: multiengine airplane
ATM is the test most airline-track applicants mean when they say "ATP written." Before an initial ATM attempt, the testing center must see a graduation certificate from an authorized ATP Certification Training Program provider. The FAA's ATP training page says ATP-CTP applies to an ATP certificate with an airplane multiengine class rating or one issued concurrently with an airplane type rating.
The FAA matrix also gives ATM a 60-calendar-month validity period. That is a test-specific rule worth checking before you plan the practical-test timeline.
ATS: single-engine airplane under Part 135
ATS is the current code for the Airline Transport Pilot Single Engine Airplane (135) knowledge test. It is a 90-question, 2.5-hour test. The FAA matrix does not require an instructor endorsement or another form of written authorization for an initial ATS attempt.
Test-day document checklist
- Create an IACRA profile and obtain an FAA Tracking Number before testing.
- Bring current, valid identification that satisfies the FAA matrix's photo, date-of-birth, signature, and residential-address requirements.
- For ATM, bring the ATP-CTP graduation certificate issued by an authorized provider.
- For a retest after failure, bring the failed Airman Knowledge Test Report and the required additional-training endorsement. An ATM retest endorsement must come from an ATP-CTP-authorized ground instructor.
- Re-open the current FAA matrix before the appointment; the matrix is the source of truth for test codes, timing, authorization, and retest documents.
Build a study plan around the actual test
Start by confirming whether you are taking ATM or ATS, then use the current FAA ATP/aircraft-dispatcher testing supplement and the knowledge areas applicable to that test. Plan timed practice against 3.5 hours for ATM or 2.5 hours for ATS. Review every missed knowledge area from practice sessions, but do not rely on a memorized question bank in place of the underlying regulations, weather, performance, and operating concepts.