Operations
Medevac crew scheduling: covering 24/7 without burning out crews
Scheduling medevac crews means guaranteeing round-the-clock coverage for missions that are unpredictable by definition: the roster places availability rather than flights. On-call shifts, rest rules, flying and medical qualifications all have to interlock so that every base can launch at any moment, without wearing down small, hard-to-replace teams.
Air ambulance work is where crew planning least resembles the rest of aviation: there is no flight programme, no season, no customer booking ahead. This article covers what sets the problem apart, the regulatory regime that applies to it (and changes in 2028), then the principles behind a medevac roster that holds.
What makes medevac rostering different?
You schedule availability, not flights
A scheduled airline assigns crews to known flights. A medevac operator guarantees that a crew will be able to fly, without knowing when or where to. The base unit of the roster becomes the duty shift: on-base presence or home standby, with a contractual launch time.
The European regulator describes these operations in the same terms: aeroplane emergency medical service and air taxi work "require 24-hour activity that may involve shift work, night operations, irregular and unpredictable schedules, and frequent time zone changes".
The contract is about coverage, not block hours
Contracts with health authorities and insurers set availability obligations: a base covered 24/7, a readiness delay, sometimes a minimum availability rate. Every coverage gap is a contractual breach, which makes the roster a commercial commitment as much as an operational one.
Night is the core of the problem
A large share of missions launch at night, straight into the Window of Circadian Low (02:00-05:59). Where a scheduled carrier tries to minimise night duties, a medevac operator has to distribute them fairly and wrap them in genuine rest. That distribution decides chronic fatigue, and ultimately whether people stay.
Two crews in one: flight deck and medical
Every mission carries a flight crew and a medical team (physician, nurse or paramedic, depending on the national model). That means two qualification frameworks and two availability logics to synchronise on every shift, frequently across two employers. A pilot on duty without a complete medical team is a closed base.
Which FTL regime applies to medevac?
Today, medevac sits outside the standard FTL scheme. Article 8 of Regulation (EU) No 965/2012 puts commercial air transport by aeroplane under Subpart ORO.FTL, but its paragraph 2 derogates for air taxi, emergency medical service and single-pilot operations: those fall under the national law referred to in Article 8(4) of Regulation (EEC) No 3922/91, under Subpart Q of its Annex III, and under national exemptions based on safety risk assessments by the competent authorities. Paragraph 3 sends commercial helicopter operations, HEMS included, to national requirements in the same way.
That regime has a direct consequence for tooling: Subpart Q was written for scheduled and charter multi-crew operations. The Commission notes that it sets no maximum daily flight duty period for single-pilot and AEMS operations, and that it provides for neither standby, nor in-flight rest, nor split duty. In other words, the rules that actually shape a medevac roster are not in the European text: they live in national law, in the exemptions granted to the operator, and in its own agreements.
This is about to change. Building on EASA Opinion No 02/2026, published on 6 February 2026, the Commission adopted on 8 September 2026 a delegated regulation amending Regulation (EU) No 965/2012 for the flight and duty time limitations of air taxi, emergency medical service and single-pilot operations. It splits Subpart FTL in two: FTL (A) for scheduled and charter operations, FTL (B) for AEMS and air taxi. It also introduces a definition of the AEMS flight, and it applies from 15 October 2028, the current derogation staying valid until then. Like any delegated act, it remains subject to scrutiny by the European Parliament and the Council before publication in the Official Journal.
| Operation | FTL regime today | From 15 October 2028 |
|---|---|---|
| Aeroplane EMS (AEMS) | National law + Subpart Q (3922/91) | Subpart FTL (B) of Regulation 965/2012 |
| Air taxi (aeroplane, 19 seats or fewer) | National law + Subpart Q (3922/91) | Subpart FTL (B) |
| Helicopter EMS (HEMS) | National law | National law (unchanged) |
| Scheduled and charter by aeroplane | ORO.FTL | Subpart FTL (A) |
Two takeaways for a planner. First, a helicopter medevac operator stays under national rules after 2028: no convergence is coming from that side. Second, the Commission deliberately deferred the date of application so that operators and authorities have time to update their operational documents, implement appropriate software tools and train their staff. The 2028 transition is therefore announced as a tooling project as much as a compliance one, and two years is not generous when a whole rule set has to be re-encoded.
The immediate practical consequence: the rules to encode in the roster differ today from one country to the next, sometimes from one AOC to the next, and they will change on a known date. The scheduling tool has to be configurable per operator rather than imposing a single rule set.
How do you build a medevac roster that holds?
- Start from coverage obligations: translate each contract into shifts to fill (base, hours, launch delay) before assigning anyone by name.
- Size the workforce from coverage, not flight hours: the crew-per-base ratio follows from shifts, rest and absences (leave, training, sickness). Mission volume is too volatile to plan on.
- Handle standby with precision: how standby counts towards duty and triggers rest is the segment's most sensitive regulatory point, and the least covered by the current European text. It is also the most expensive when mishandled, since a crew can be "consumed" by an uneventful standby.
- Make night and weekend fairness explicit: build it in as a generation constraint rather than checking it at month-end. In teams where every member is hard to replace, it is the strongest retention lever there is.
- Pair qualifications to the mission: aircraft type, medical specialties, equipment (incubator, ECMO). Every shift must assemble the full combination.
- Plan for re-generation: a long mission, an overrun shift or a sick call, and the roster replans. What matters is re-verifying compliance at every change rather than trying to avoid changes altogether.
This is duty-pattern generation under constraints, which is exactly what SkAI Tech does: automatic ON/OFF pattern generation against the applicable rules (regulatory, regional and in-house, configured per operator), qualification-to-mission matching, and re-generation in minutes when the situation moves. Non-scheduled operators connect their existing ops system to it rather than replacing it.
FAQ
Is medevac subject to EASA FTL (ORO.FTL)?
Not to the standard scheme: Article 8(2) of Regulation (EU) No 965/2012 keeps aeroplane EMS under national law and Subpart Q of Regulation (EEC) No 3922/91, and Article 8(3) sends commercial helicopter operations to national requirements. The exact regime therefore depends on the country, the operation type and the AOC. From 15 October 2028, aeroplane EMS moves into the new Subpart FTL (B); helicopters stay under national rules.
What actually changes in 2028 for an AEMS operator?
A harmonised European rule set replaces the national patchwork, written for on-demand operations rather than scheduled airline flying: a maximum daily flight duty period, standby, in-flight rest and split duty, none of which Subpart Q provides for these operations today. Regulation (EEC) No 3922/91 is repealed from the date the new text applies.
How do you keep nights and weekends fair?
By making fairness a generation constraint, not a month-end observation: per-person caps per period, rotation of unpopular shifts, and visibility for the teams on how the load is shared. An optimiser treats fairness as an objective on a par with cost.
Should flight and medical crews be planned together?
Yes, that is the segment's defining feature. A shift is only covered when both teams are complete and mission-compatible. Planning them separately mechanically produces bases that are open on paper and unable to launch.
What is the most expensive rostering mistake in medevac?
Confusing displayed availability with real availability: a crew at the end of its shift, minutes from mandatory rest, covers the base on paper but cannot take a long mission. The roster has to reason in remaining mission capability rather than mere presence.
Sources
- Regulation (EU) No 965/2012, Article 8: paragraph 1 (CAT by aeroplane subject to Subpart FTL), paragraph 2 (derogation for air taxi, EMS and single-pilot operations to national law and Subpart Q of Regulation (EEC) No 3922/91), paragraph 3 (CAT by helicopter subject to national requirements).
- European Commission (2026, 8 September), Commission Delegated Regulation amending Regulation (EU) No 965/2012 as regards the flight and duty time limitations and rest requirements for air taxi, emergency medical services and single-pilot operations, C(2026) 6142 final, transmitted to the Council on 10 September 2026 (document 12992/26): Subparts FTL (A) and FTL (B), definition of the AEMS flight, application from 15 October 2028, recitals 3 to 8.
- EASA (2026, 6 February), Opinion No 02/2026 - Development of harmonised and updated FTL rules for CAT with aeroplanes used in emergency medical services (AEMS), air taxi and single-pilot operations, the regulatory basis for the delegated act above.
- The national authority texts applicable to the operator, which remain the reference until the new regime applies.