Utilisation is the number that decides a charter operator's year, and it is also the one most often quoted without a definition. Start by agreeing what you are measuring.
The number that actually matters
Not total hours flown. Revenue hours as a share of available hours — where available means aircraft serviceable and crew within duty limits.
An aircraft that flew four hundred hours of which ninety were repositioning did not fly four hundred revenue hours. And an aircraft grounded three weeks for a scheduled inspection was not available, so those weeks do not belong in the denominator either.
Measure it monthly, not annually. The annual figure hides the fact that high season was capacity-limited and low season was demand-limited, which are opposite problems with opposite fixes.
Which gaps an outside channel can fill
The midweek hole in low season. A Tuesday in September with the aircraft on the ground is fixed cost running with no revenue. That gap is not closed by price: it is closed by a larger pool of requests. We show a "from" price per route; the final fare depends on the date, the group and the baggage, and is confirmed in writing before booking.
The empty return. If a job ends in Tamarindo and the aircraft goes home to San José — 97.1 nautical miles — that leg exists whether or not anyone is aboard. We work with empty legs: they arise from operations already confirmed, are listed at short notice and are not guaranteed. Ask us what is available that day.
And the short-notice window. Requests that appear with two days' notice reach whoever is listed and available, not whoever is best known. This is the one place where a small operator beats a large one on equal terms: the aircraft is either free on Thursday or it is not, and no sales relationship changes that.
Which gaps it cannot fill
High season. Your calendar is already full, and an extra channel competes with your own direct clients for the same aircraft. This is the part marketplaces oversell.
Crew-limited days. An available aircraft with an exhausted crew is grounded, and no volume of requests changes that.
And the routes your aircraft does not serve. Drake Bay is 83.5 nautical miles from San José and Quepos 33.4; if the field does not take your category, those requests will never be yours. The specific aircraft is assigned on confirmation, based on passenger count, baggage and the destination field.
The honest expectation
An outside channel moves utilisation in the months you are not full, in the legs you were flying empty anyway, and in the bookings that arrive too late for your own pipeline.
That is a real improvement and a modest one. Anyone promising you a step change in annual utilisation is describing a market that does not exist at this scale.
What to measure before and after
Three figures, taken the same way for both periods:
Revenue hours over available hours, monthly. The headline.
Share of revenue hours that came from outside channels. If it stays at zero, the channel is not working for you and you should stop.
And cost per booking won, counting the time you spend answering requests that do not fly. A channel that sends volume and converts poorly costs you hours nobody invoices.
The lever nobody counts
Your base. The aircraft may need to reposition to the departure aerodrome, and that leg forms part of the quote. An operator whose work departs from one region while the aircraft sleeps in another pays for that on every job, and no channel fixes it.
Fix the base question first. Then measure what an outside channel adds. Otherwise you will credit the channel with a problem it did not cause and cannot solve.
Frequently asked questions
What should utilisation actually measure?
Revenue hours as a share of available hours — aircraft serviceable and crew within duty limits.
Why monthly rather than annually?
Because the annual figure hides that high season was capacity-limited and low season demand-limited.
Which gaps can an outside channel fill?
Midweek low season, empty returns, and short-notice requests.
Which can it not fill?
High season, crew-limited days, and routes your aircraft cannot serve.
How much improvement is realistic?
Real but modest. A step change in annual utilisation describes a market that does not exist at this scale.
What should I measure after?
Revenue over available hours, the share from outside channels, and cost per booking won.
Let us talk
The specific aircraft is assigned on confirmation, based on passenger count, baggage and the destination field.