Originally Posted by Qotsaautopilot

12. A pilot awarded a regular or reserve schedule shall, within 24 hours after initial bids are awarded, be allowed the op- tion of shifting his assigned vacation period by three days from the scheduled starting date of his vacation. Shifts will be awarded on a seniority basis, except that a pilot may not shift into a trip not previously affected by the pilot’s vacation bid resulting in a new trip drop—without the prior approval of Crew Scheduling.