12. PRESOLO REQUIREMENTS.
a. [FONT=JFIKGN+TimesNewRomanPSMT,Times New Roman PSMT]The "90-day" solo endorsement that goes in the student pilot’s logbook is required every 90 days for the student to be afforded continuing solo privileges, per section 61.87

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b.
[FONT=JFIKGN+TimesNewRomanPSMT,Times New Roman PSMT]Although section 61.19(b) establishes, in a pertinent part, that a student pilot certificate expires 24 calendar-months from the month in which it is issued, the endorsements on that student pilot certificate are a matter of record indefinitely. The endorsements are required to be updated from "time-to-time" in the student pilot’s logbook to retain solo privileges. [/FONT]
c.
[FONT=JFIKGN+TimesNewRomanPSMT,Times New Roman PSMT]The following pre-solo requirements must be met: [/FONT]
(1)
[FONT=JFIKGN+TimesNewRomanPSMT,Times New Roman PSMT]Before being authorized to conduct a solo flight, a student pilot must have demonstrated satisfactory aeronautical knowledge by completion of a knowledge test (see § 61.87(b)). Before being authorized to conduct a solo flight, a student pilot must have received and logged the flight training required by sections 61.87(c) and (d) through (m), as appropriate. Satisfactory aeronautical knowledge and an acceptable performance level must have been demonstrated to an authorized instructor, per section 61.87(b). [/FONT]
(2)
[FONT=JFIKGN+TimesNewRomanPSMT,Times New Roman PSMT]Prior to solo flight, a student pilot is required to have his or her student pilot certificate and logbook endorsed for the specific make and model aircraft to be flown. Thereafter, the student pilot’s logbook must be endorsed every 90 days to retain solo flight privileges. These endorsements must be given by an authorized flight instructor who has flown with the student (per section 61.87(p)). [/FONT]