D-30 to D-7: an anonymised booking-progress exercise

Exercise setup

Assume a flight has 180 seats. The historical median stands at 72 bookings at D-30, 88 at D-21, and 126 at D-7. This exercise records 58, 82, and 132 at the same checkpoints.

At D-30, the exercise is 14 bookings behind the reference. The first reading is slower sales. I would mark that as a judgement to review, rather than a finished conclusion.

The D-30 misread

The exercise deliberately adds a misread: the 14-booking cumulative gap is treated as evidence of weaker demand ahead, prompting a plan to open a large block of lower-fare availability at once.

The latest seven-day pickup changes the picture. The exercise added 22 bookings, compared with 14 in the reference. The total remains lower, but the recent pickup is eight bookings faster.

Hypothetical action and review point

The exercise narrows the action to six lower-fare seats for 48 hours, followed by a review at D-21. Six seats and 48 hours are demonstration parameters with no real operational meaning.

At D-21, the cumulative gap has narrowed from -14 to -6. The temporary opening ends at that checkpoint, and the exercise continues to D-7. It then records 132 bookings, six above the historical reference.

Reading the result

The +6 at D-7 does not prove that the earlier action created extra bookings. The exercise does not control for price, holidays, group demand, competitor schedules, or other variables, and it does not calculate a revenue result. It shows only that later data corrected the first D-30 judgement.

A slower seven-day pickup, or a change in seats for sale, frequency, or aircraft assignment, would lead to a different action. This exercise does not settle those boundary conditions.

Exercise record

The final record contains four items: the initial D-30 judgement, the revision after checking pickup, the D-21 review decision, and the D-7 result. Each item points back to the data available at the time.