Pennsylvania Code
Title 7 - AGRICULTURE
Part VIII - State Horse Racing Commission
Subpart E - Thoroughbred Rules of Racing (Horse)
Chapter 305 - RULES OF THOROUGHBRED RACING-TEMPORARY REGULATIONS
RUNNING OF THE RACE
Section 305.277 - Applications for extensions

If an apprentice jockey is unable to ride for a period of 5 consecutive days or more after the date of the apprentice jockey's fifth winning mount because of restriction of racing, service in National armed forces, physical disablement or illness, or enrollment and attendance in an institution of secondary or higher education, the Commission may, upon the submission of appropriate documentation, extend the time during which the apprentice weight allowance may be claimed.

This section cited in 7 Pa. Code § 303.32 (relating to apprentice jockeys).