Brightwork Polish at Milan Malpensa (LIMC)

Why do leading edges and inlets need polishing at Malpensa?

Bare aluminium oxidises. Rain, de-icing fluid, industrial particulate and salt from coastal legs all accelerate the process, and the leading edges—wing, horizontal stabiliser, engine inlets—take the brunt of airflow and moisture. Malpensa sits 768 feet above sea level in the Po Valley, where humidity is high year-round and winter brings repeated freeze-thaw cycles. Aircraft based here or transiting frequently show tarnish faster than those operating in drier climates.

Polishing removes the oxide layer and restores reflectivity. We then apply a sealant that slows oxidation for the next three to six months, depending on flight hours and routes. The result is not cosmetic alone: smooth leading edges shed ice more predictably during ground de-icing, and clean inlet rings make walk-around inspections easier because corrosion and fluid staining become immediately visible.

What changes at Milan Malpensa?

Malpensa operates twenty-four hours without curfew, and its two parallel runways—17L/35R and 17R/35L, each 3,920 metres—handle simultaneous arrivals and departures throughout the night. The Milano Malpensa Prime terminal, opened in July 2019, sits between Terminal 1 and Terminal 2 on a 50,000-square-metre apron with a 5,000-square-metre hangar for executive jets. Five handling agents are present at the airport: SEA Prime (brand Milano Prime), Signature Aviation (Signature MXP), Universal Aviation Italy, Sky Services and AviaVIP (Argos VIP / Aviapartner Executive). All coordinate GPU, airside escort and water supply.

The airport is slot-coordinated, so PPR and handling notification matter. Distance to Milan city centre is forty-nine kilometres north-west, which means most crews overnight at the airport hotel or in the city, leaving the aircraft on stand. That window—typically eight to fourteen hours—suits brightwork polish when the jet is already cold-soaked and no passenger movement interrupts the work. We liaise with your handler to confirm apron access, power and any slot changes that affect the turnaround.

How long does a brightwork polish take, and can it fit between legs?

Duration depends on the amount of bare metal. A super-midsize jet with polished leading edges, two inlet rings and exhaust cones takes one full day. An ultra-long-range aircraft with additional brightwork—window surrounds, cheat-line trim, thrust-reverser surfaces—may need two days, occasionally three if corrosion is deep or prior polishing left swirl marks that require wet-sanding.

Single-day work fits a typical European overnight: aircraft lands in the evening, we begin after the last passenger deplanes, and the jet is ready by mid-morning. Two-day jobs suit a positioning stop or a crew-rest layover. For fleets on tight schedules we split the work across visits—leading edges one month, inlets and exhausts the next—so each visit takes only four to six hours and the aircraft never misses a slot.

What does the polishing process involve on the ramp?

We start with a solvent wipe to remove oils, then assess the oxide layer. Light tarnish comes off with compound and a foam pad; heavier oxidation needs wet-sanding with progressively finer grit, finishing at 3000 before we switch to polish. Each surface is worked in overlapping passes until the reflection is uniform and free of haze.

Spinners, inlet rings and leading edges are hand-polished; no rotary tool touches areas near pitot probes, static ports or composite joints. Exhaust cones often carry carbon staining, which we remove with a dedicated cleaner before polishing. Once the mirror finish is achieved, we apply a thin sealant coat that bonds to the aluminium and forms a hydrophobic barrier. The sealant cures in thirty minutes, after which the surface can be touched and the aircraft released.

All work happens under the wing or around the nacelle, so we coordinate with your handler to ensure no ground equipment obstructs access and that GPU leads do not cross our work area. If de-icing is scheduled for departure, we note that in the tech log so the handler knows the leading edges have fresh sealant.

How often should brightwork be polished, and what triggers an unscheduled session?

We recommend polishing two to four times a year. Aircraft flying coastal routes, operating in and out of airports with de-icing programmes, or based in humid climates benefit from quarterly attention. Jets that spend most of their time at high altitude over dry continental routes can stretch the interval to six months.

Unscheduled work is usually triggered by a pre-flight walk-around: the chief pilot notices tarnish on the leading edges before a charter with a new client, or the flight department wants the aircraft camera-ready for an air-show positioning. Malpensa's twenty-four-hour operation and multiple handlers make last-minute scheduling practical. We have turned around brightwork polish in eight hours when a crew discovered oxidation during a fuel stop, though we prefer twelve to sixteen hours to avoid rushing the sealant cure.

Can brightwork polish be combined with other detailing at Malpensa?

Yes, and the combination is common. Leading-edge polish pairs naturally with a dry wash or rinseless exterior clean: we do the polishing first, then wash the rest of the airframe so that compound residue on the fuselage is removed in a single pass. If you are scheduling a complete detail, brightwork is always the first task—polishing generates fine aluminium dust and compound spray that would otherwise settle on a freshly cleaned belly or polished paint.

For fleets on a recurring programme, we often alternate: exterior wash one visit, brightwork polish the next, then a full detail on the third cycle. This spreads the work across the year, keeps each turnaround short, and ensures no surface is neglected. Charter operators staging through Malpensa between legs frequently request leading-edge touch-up as a standalone item, then book the full polish during the next scheduled down day.