AI.II.K.K2FAA-S-ACS-25 · Nov 2023Knowledge

Required student pilot pre-solo knowledge test, solo endorsements, and logbook entries.

ACS element text (the applicant demonstrates understanding of)

Required student pilot pre-solo knowledge test, solo endorsements, and logbook entries.

Bottom line

A student pilot may not operate an aircraft in solo flight unless that student has met the requirements of 14 CFR 61.87. Before solo, a student pilot must demonstrate satisfactory aeronautical knowledge on a knowledge test administered by the student's authorized instructor. At the conclusion of the test, the instructor must review all incorrect answers with the student before authorizing that student to conduct a solo flight.

Key numbers

Key numbers for Required student pilot pre-solo knowledge test, solo endorsements, and logbook entries.
NumberWhat it means
Pre-solo night flight training must be received within the 90-calendar-day period preceding the date of the flight.Night training

FAA references

  1. 14 CFR 61.87 (Solo requirements for student pilots.) — eCFR current as of 2026-03-05
  2. AC 61-65 Appendix A — AC No: 61-65K
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