Ceramic Coating at Samedan / St. Moritz (Engadin Airport) (LSZS)

What changes at Samedan / St. Moritz (Engadin Airport)?

Engadin Airport sits at 5,600 ft, making it the highest-altitude airport in Europe. That elevation means density altitude climbs quickly on warm days, and every pilot arriving here completes a mandatory briefing regardless of type rating or hours. Winter is the operational peak: the airport opens at 08:00 local and closes at the end of evening civil twilight, with no night operations permitted. Snow-clearing equipment runs constantly, snow-removal fees apply, and the airport company—Engadin Airport AG—advises booking hangar space or overnight parking by phone well in advance during the season.

Ground handling is provided by the airport operator from the terminal at Plazza Aviatica 6b. Customs is available throughout operating hours, and the field is open 365 days a year. Because there are no scheduled passenger flights, the apron is shared by business jets, helicopters, gliders and training traffic. Coordinating a multi-day hangar slot for ceramic work means talking to the handler early, especially between December and March when demand for covered parking is highest and transient aircraft compete for limited indoor space.

Why apply ceramic coating at an alpine airport?

Thin air at altitude means more ultraviolet reaches the ramp, and UV is the single largest cause of oxidation on gloss paint. An aircraft based or frequently parked at LSZS will fade faster than one living at sea level unless the paint carries a sacrificial barrier. Ceramic coating locks out UV, creates a hydrophobic surface that sheds snow-melt and de-icing fluid, and reduces the adhesion of dust, pollen and exhaust soot—all of which arrive on the belly and nacelles during every approach into a mountain valley.

Winter operations add another layer of punishment. Type I and Type IV fluids are glycol-based, and repeated application etches unprotected clear coat. A ceramic layer resists that chemical attack and makes the post-flight rinse a five-minute job instead of a twenty-minute scrub. For charter operators running back-to-back legs through St. Moritz, that time saving translates directly into faster turnarounds and cleaner logbooks.

What happens during the three-to-six-day process?

The aircraft enters the hangar and we begin with a full decontamination: clay bar, iron remover, tar solvent. Once the paint is clean to the touch we inspect under high-intensity light and correct any oxidation, swirls or scratches with a multi-stage machine polish. Paint correction can add a day if the finish has been neglected, but it is the only way to ensure the ceramic bonds to a perfectly smooth surface.

We then wipe down every panel with an oil-removing prep solution and apply the first ceramic layer by hand, working one section at a time: fuselage, wings, nacelles, tail. The first layer flashes within minutes; we apply the second layer twelve hours later. Brightwork—leading edges, nacelle lips, APU exhaust surrounds—receives its own ceramic formulation, and all glass gets a separate hydrophobic treatment that improves visibility in rain and makes ice easier to clear.

Curing takes twenty-four to forty-eight hours depending on ambient temperature and humidity inside the hangar. We do not release the aircraft until the coating has fully cross-linked, because any moisture or contamination during cure will leave a permanent mark. You leave with a maintenance plan that specifies which wash chemistry is safe, a warranty document, and an aircraft that will stay cleaner for the next two to three years.

How do we coordinate with Engadin Airport AG?

Because the handler is also the airport operator, every request for hangar time goes through one office. We submit the registration, MTOW, arrival and departure slots, and the number of days we need the aircraft under cover. The handler confirms availability, quotes the daily hangar rate and any snow-removal fees if the aircraft arrives with accumulation on the upper surfaces, and arranges an airside escort for our crew.

If the aircraft is cold-soaked—common after a positioning leg from a colder departure point in winter—we ask the handler to keep the hangar doors closed and run a GPU overnight so cabin heat can bring the airframe to ambient before we start prep work. Applying ceramic to cold paint traps moisture under the coating and voids the warranty. The handler is used to these requests; they manage a constant flow of business jets that need more than fuel and a tow.

When should an operator schedule ceramic coating at LSZS?

The ideal window is late spring or early autumn, when the airport is quieter, hangar availability is easier to secure, and temperature and humidity inside the building are stable. Summer works as well, though the field is busier with training traffic and glider tows sharing the apron. Winter is possible but requires advance coordination: snow-clearing operations can delay hangar access, and if the aircraft has been sitting outside overnight the airframe may need twelve hours to warm before we begin.

Ceramic coating fits naturally after a repaint or a complete detail. If the paint shop is elsewhere in Europe, plan the ferry to LSZS so the aircraft arrives with fewer than ten flight hours on the new finish—before the first bug strikes cure into the clear coat. For fleets that winter in St. Moritz, scheduling the coating at the start of the season means the aircraft is protected before the first Type IV application and will emerge in spring needing only a maintenance wash instead of a full correction.

What does the operator receive at handover?

You receive the aircraft with a mirror finish, a maintenance plan printed and placed in the tech log, and a warranty card that specifies coverage duration and the conditions that void protection. The maintenance plan lists approved wash chemistry—pH-neutral, no solvents, no wax—and recommends a rinse interval based on operating environment. For an aircraft splitting time between LSZS and lower-altitude airports, we usually suggest a rinse every fifteen flight hours during winter and every twenty-five in summer.

The coating itself is invisible but measurable: water beads into tight spheres and rolls off at a five-degree angle, and a gloved finger dragged across the nacelle will come away clean even after a flight through clouds. Brightwork stays brighter because oxidation cannot reach the aluminium, and the windscreen sheds rain without need for anti-ice fluid below freezing point. The finish will last two to three years if the maintenance plan is followed, and the next ceramic application will take half the time because the paint underneath remains corrected.