Building the flight crew establishment from the ground up
Our prior posts set out the regulatory floor under every flight crew decision. The minimum crew dictated by the type certificate. The licences each pilot must legally hold. The flight time limitations that cap how much any individual can fly, and the practical productive figure of around 650 hours a year that sits well below the legal ceiling.
This post takes that foundation and turns it into a real number. The pilot establishment. The total headcount of captains and first officers Atlántico Airways needs to fly its programme. We are going to build it the same way an operator’s flight ops planning team builds it, step by step, with the maths visible.
The answer for Atlántico, as you saw in Module 0, is 181 pilots. By the end of this post you will not only know why, you will be able to size the establishment of any airline you can describe in terms of fleet, utilisation, and sector pattern. This is one of the most important calculations in airline economics, and almost nobody outside the operation has ever seen it written down.
Step one: the flying to be covered
The starting point is the flying programme. Not the destinations, not the schedule, but the raw number of pilot block hours the airline needs to fly across its fleet in a year.
For Atlántico, that comes straight from Module 0. The A321neo fleet of ten aircraft generates around 26,000 block hours a year, derived from roughly 2,600 block hours per aircraft across 340 to 350 utilisation days. The A330-300 fleet of five aircraft generates around 17,000 block hours a year, derived from roughly 3,400 block hours per aircraft over the same utilisation. The fleet total is approximately 43,000 block hours.
Every one of those block hours must be flown by a minimum of two pilots, the legal floor set by the type certificate. The pilot-hour requirement is therefore the block hours multiplied by the cockpit occupancy, and for short-haul this is straightforward. The A321neo fleet needs 26,000 block hours multiplied by 2 pilots, giving 52,000 pilot block hours a year.
The A330-300 fleet is more complicated, because long sectors require augmented crew. A typical Atlántico A330 sector to Latin America is operated with three pilots, not two. Shorter widebody sectors to North Africa run with two. Blended across the fleet’s mix of long and medium-haul flying, the average cockpit occupancy works out at around 2.5 pilots per sector. The pilot-hour requirement for the A330 fleet is therefore 17,000 block hours multiplied by 2.5, giving approximately 42,500 pilot block hours a year.
The combined requirement is about 94,500 pilot block hours to be flown across the year.
Step two: productive hours per pilot
The next step is to divide the total pilot-hour requirement by the productive flying hours each individual pilot can deliver in a year. This is where the work done in the prior post pays off.
A European pilot is legally allowed to fly 900 hours in a calendar year, with a dual ceiling of 1,000 hours in any rolling 12-month period. Neither figure is achievable in practice. The calendar gets eaten by the 96 mandatory days off required under the Working Time Directive, the 30 or more days of annual leave that Spanish collective agreements typically provide, the eight to ten days a year a senior pilot spends in recurrent simulator training and Licence Proficiency Checks, additional ground training and currency requirements, sickness absence, parental leave, command upgrade training time, and reserve or standby duty during which the pilot is on the payroll and rostered but not generating planned flying.
When all of that is accounted for, the realistic productive line-flying output sits between 600 and 700 hours per pilot per year. Atlántico models 650 hours as a credible mid-range figure for a hybrid operator with disciplined rostering. A more aggressive operator might push to 700. A poorly planned one drops to 580.
This single number is one of the most consequential in airline cost modelling. Every additional ten hours of productive output per pilot, across a 181-pilot establishment, is equivalent to the output of about three additional pilots the airline does not have to hire. Across the industry, this is what Crew Planning is paid to chase.
Step three: the establishment, bottom-up
With the pilot-hour requirement and the productive hours per pilot both established, the bottom-up establishment falls out of simple division.
For the A321 fleet, 52,000 pilot block hours divided by 650 productive hours per pilot gives 80 pilots. For the A330 fleet, 42,500 pilot block hours divided by 650 productive hours per pilot gives 65 pilots. The bottom-up total is 145 pilots.
If that number looks low compared to the 181 you saw in Module 0, it should. The bottom-up calculation has covered the flying. It has not yet covered the people who, on any given day, are not available to fly it.
Step four: the reserve, training and absence overhead
The bottom-up number assumes every pilot is a fully productive line pilot available to fly on every working day. That assumption breaks down the moment you look at a real roster.
The first piece of overhead is reserve and standby cover. Every airline must roster a proportion of its pilots as reserve, available at home or at the airport to cover sickness, disruption, missed connections by repositioning crew, and the dozens of other small failures that affect a complex operation every day. A reserve pilot is on duty and being paid, but is not generating planned flying. Without reserve cover, the first sickness call of the morning cancels a flight.
The second piece is the training pipeline. New pilots joining the airline spend several weeks in type rating courses and then several months under line training, flying under the supervision of a training captain before being released to normal line operations. During this period they are counted in the establishment because they are on the payroll, but they are not generating productive line output. The same applies to first officers undergoing command upgrade training to become captains, and to captains transitioning between fleets.
The third piece is training captains and examiners themselves. A proportion of every airline’s senior captains spend significant time as Type Rating Instructors, Line Training Captains and Type Rating Examiners rather than flying normal commercial schedules. They remain in the establishment, but their reduced line productivity is part of the overhead.
The fourth piece is long-term absence. Maternity and paternity leave, long-term sickness, unpaid leave, sabbaticals, and the period before a pilot returns to flying after a medical issue. None of these can be planned out of the establishment. They are inevitable across a population of 181 people.
Across the industry, this overhead is handled through a crews-per-aircraft ratio rather than recalculated case by case. The standard benchmarks, used by every airline’s planning department and validated by published operator data, are five crews per narrowbody aircraft and six to seven crews per widebody aircraft. The widebody figure is higher because augmentation, longer time away from base, and more complex training requirements all reduce productivity further. A crew, in this context, is the cockpit complement, two pilots for narrowbody, two or more averaged for widebody.
Step five: the establishment, top-down
The top-down calculation is straightforward, and for Atlántico it produces this:
The A321 fleet uses ten aircraft multiplied by five crews per aircraft multiplied by two pilots per cockpit, giving 100 pilots.
The A330 fleet uses five aircraft multiplied by 6.5 crews per aircraft multiplied by an average of 2.5 pilots per cockpit, giving 81 pilots.
The total is 181 pilots. This is the establishment Atlántico carries on its books.
Reconciling the two methods
The two calculations sit side by side. The bottom-up method, working from raw pilot-hours, gives 145 pilots. The top-down method, using industry-standard crews per aircraft, gives 181. The gap of 36 pilots is the reserve, training and absence overhead, an uplift of about 25% on the pure flying requirement.
This is the single most important number for anyone building an airline from scratch. The pilot establishment is the pure flying requirement plus roughly a quarter again for everything that stops a pilot from flying. Underbudget that overhead and the operation falls over the first time the winter sickness season hits. Overbudget it and the airline carries dead weight on the payroll. The sweet spot is a 20 to 25% uplift for a disciplined operator, rising to 30% or more for a startup still building its pipeline. Atlántico sits exactly where a mature mid-sized hybrid carrier should.
The composition of the establishment
The 181 figure is not just a total. It splits across captains, first officers, and senior first officers, and the ratio matters because the cost per role is very different.
For the A321 fleet, the cockpit is two pilots, normally a captain and a first officer. The crew complement therefore splits evenly, 50 captains and 50 first officers, across the 100-pilot fleet establishment.
For the A330 fleet, the augmented operating pattern brings senior first officers into the picture. A senior first officer is typically a first officer with significant widebody experience who flies augmented sectors as the third pilot in cruise, but does not yet hold command. Atlántico’s 81-pilot widebody establishment splits roughly into 32 captains, 17 senior first officers, and 32 first officers. The exact ratio varies by airline and by the maturity of the command upgrade pipeline, but the principle holds: long-haul operations carry a senior first officer grade that short-haul operations generally do not.
This composition has direct cost implications. Captains are the most expensive crew on the payroll, senior first officers next, first officers least. The shape of the establishment, and how an airline manages the command upgrade pipeline that feeds it, is one of the most consequential cost decisions in flight operations. We will return to it in the next post.
Where this leaves Atlántico
The flight crew establishment is now defined. 181 pilots. 100 on the A321 fleet, split evenly between captains and first officers. 81 on the A330 fleet, split between captains, senior first officers and first officers in roughly a four-two-four ratio.
Every one of those pilots has to be licensed, current, type-rated, medically certified, and rostered legally within ORO.FTL. Every one of them has to be paid. Every one of them needs recurrent training. Every one of them sits on the payroll whether they fly 700 hours next year or 580.
Our next post takes this establishment and costs it in full. The base salary structure across captains and first officers, on the A321 and on the A330. The Spanish social security cap that means a senior captain on €130,000 does not load at the same rate as a junior first officer on €60,000. The allowances and per diems that vary by fleet. The benefits that quietly add another layer.
By the end of the next post you will have a defensible total for Atlántico’s flight crew wage bill, and you will understand exactly what makes it the size it is. After that we will cover the costs that sit on top of the wage line: the recurrent training, the type ratings, and the command upgrades. Together they then will give you the complete picture of what a flight crew really costs an airline to operate, from the regulation up.
About OAT
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