If you fail the UAG, §107.71 says you may not reapply for that knowledge test for 14 calendar days after the failure. The FAA testing matrix dated 25 September 2026 requires you to present the failing airman knowledge test report and does not require an instructor endorsement. You schedule again with PSI and pay the testing-center fee again.
The 14 calendar days
The wait runs from the date of the failure. Fourteen calendar days includes weekends. It is not 14 business days, and it is not "two weeks if the center has a seat." You may not reapply until that period has passed. The ACS states the same interval and adds the practical step: submit the applicable airman knowledge test report showing the failure to the testing center before you retest. A logbook endorsement, a CFI signature, or a completion certificate from a ground school is not on that list. The endorsement people remember belongs to other practical-test rules. It is not the Part 107 retest rule.
The passing mark you are trying to clear is still 70 percent of the scored questions. The format does not shrink because you have already seen one form. Plan the second seat only after the 14 days, with the failing report in hand. Do not confuse that wait with the cheating bar in §107.69. An applicant the FAA finds has copied a test, taken it for someone else, or otherwise violated §107.69(a) is prohibited for 1 year after that act from applying for any certificate, rating, or authorization under 14 CFR Chapter I, and from applying for and taking any test under that chapter. An ordinary failure is 14 calendar days and another testing-center fee. A cheating finding is a different prohibition. The test day page covers identification and the FTN. The passing score page is the 42-out-of-60 arithmetic. Recurrent training under §107.65 is a different event for people who already hold the certificate. Failing the initial test does not put you on the recurrent page yet.
Night operations are still on the form
A retest still scores operating rules, including night. Routine Part 107 night operations have been allowed without a waiver since 21 April 2021, provided the training and lighting requirements are met. That date arrived with the operations-over-people rule. 29 August 2016 is when Part 107 itself took effect, which is when night still meant a waiver. 16 September 2023 is the Remote ID operator-compliance date. None of those dates is a curfew, and none of them is the retest waiting period.
A newly certificated pilot who passed the updated initial knowledge test three months ago, whose strobe is manufacturer-rated as visible for 3 statute miles and flashes at a rate sufficient to avoid a collision, may fly a survey two hours after sunset without a night waiver. Both §107.29 conditions are met: the updated initial test, and one anti-collision light with the required visibility and flash rate. The rule does not demand a second strobe. It also does not demand an airspace authorization merely because the sun is down. An authorization under §107.41 is a separate question, asked only when the airspace requires it. Night flight alone does not. The full lighting and civil-twilight detail is on the night operations page.
An app does not take the compliance duty
Section 107.19(d) requires the remote pilot in command to ensure the operation complies with all applicable regulations. A subscription app that reports "all checks passed" can help you look things up. It does not transfer that duty, and it does not discharge it. If the flight then violates a regulation the app never checked, the violation is still the remote pilot's. Good faith in the green checkmark is not a defense. Section 107.49's preflight list does not shrink §107.19(d) down to whatever boxes the app rendered.
That trap shows up twice in study. On test day, an app that says you are ready does not repeal the 14-calendar-day wait or replace the failing report. In the aircraft, an app that says the mission is clear does not replace the remote pilot's duty to know the rules the app skipped. A pilot who launches because the screen was green, into airspace or a cloud clearance the checklist never asked about, has not complied with §107.19(d).
Use the free practice test to find the items you missed, wait the 14 calendar days, and bring the failing report. The course lessons are at pricing.