Brightwork Polish at Bern-Belp (LSZB)

Why polish brightwork at Bern-Belp?

Bare-metal surfaces oxidise faster than paint, and the leading edges of a business jet take the brunt of every flight—rain, ice crystals, industrial pollutants and UV exposure at altitude. Left unpolished, aluminium dulls to a chalky grey that no amount of washing will shift. Oxidation also creates a rough surface that disrupts laminar flow and costs a fraction of a knot in cruise, though the real penalty is appearance: dull leading edges age an aircraft overnight.

We restore the mirror finish by hand, working through progressively finer grades of polish until the metal reflects cleanly. After polishing we apply a sealant that fills the microscopic pores in the aluminium, slowing the return of oxidation and keeping the surface brighter for longer. The result is a jet that looks factory-fresh on the ramp, with leading edges that catch the light instead of scattering it. Operators typically schedule brightwork polish two to four times a year, or fold it into a complete detail when the aircraft is down for deeper work.

What changes at Bern-Belp?

Bern sits at 1,675 feet on a single 1,730-metre runway, which keeps traffic light and limits operations to business jets and regional aircraft—no heavies, no wide congestion. The airport is not slot-coordinated, so scheduling a polish is straightforward: agree a date with your handler and we move airside. All general-aviation and business-aviation handling flows through the General Aviation Center, run by Flughafen Bern AG (Ground Services Bern, +41 31 960 21 31, frequency 131.410). The terminal sits on Flugplatzstrasse in Belp, six kilometres south-east of Bern city centre, and customs and immigration are available during aerodrome operating hours, so international flights clear without repositioning.

Because Bern is a capital airport with steady but modest business-jet movements, the ramp rarely feels crowded. We coordinate stand access with Ground Services and typically work around scheduled departures, which means fewer interruptions and cleaner conditions for polishing. The elevation and alpine proximity bring sharp temperature swings—cold-soaked wings in winter, intense UV in summer—that accelerate oxidation on bare metal, so regular brightwork maintenance pays dividends here.

How long does a brightwork polish take at Bern?

Duration depends on how much bare metal your aircraft carries and its current condition. A super-midsize jet with narrow leading-edge strips, small inlet rings and minimal brightwork might need only one full day. An ultra-long-range machine with wide leading edges, large nacelle inlets, thrust-reverser surfaces and polished window surrounds can stretch to three days, especially if oxidation is heavy and we start with coarser compounds to level the surface.

We work methodically: mask adjacent paint, polish each section by hand to a mirror finish, remove compound residue, then apply sealant. If the aircraft has been polished regularly the process moves faster because the metal holds its finish and we skip the heavy cutting stages. For one-off visits we aim to complete the work within your planned ground time at Bern; for fleet aircraft on a recurring schedule we book longer windows and coordinate with your maintenance calendar so brightwork, paint correction and interior care happen in a single visit.

What exactly gets polished during the service?

We polish every accessible bare-metal surface that oxidises in service. Wing and horizontal-stabiliser leading edges are the largest areas and usually show the most weathering; we work from root to tip, paying extra attention to any corrosion pitting or staining. Engine inlet rings and spinners come next—these catch every raindrop and bug strike on approach, and the mirror finish here is immediately visible on walk-around. Exhaust outlets and thrust-reverser surfaces, which see heat and combustion residue, are polished and sealed to slow discolouration.

Window surrounds and any other bright trim—cheat-line accents, door handles, antennas with polished bases—are included if they are bare metal rather than anodised or painted. We do not touch anodised or coated brightwork with abrasive polish, because that damages the factory finish. After polishing we clean away all compound, then apply a hydrophobic sealant that fills the grain of the aluminium and gives the surface a water-beading quality. The sealant does not stop oxidation forever, but it slows the clock and makes the next polish easier.

What about recurring brightwork care versus one-off correction?

An aircraft polished every three to four months stays ahead of oxidation, and each session is faster because the metal never dulls completely. We see this with fleet operators and charter companies that fold brightwork into their scheduled washes at Bern: the leading edges hold their shine, the sealant is still working, and we spend less time cutting and more time refining. Recurring care also catches corrosion early—small pits and stains are easier to blend out before they etch deeply into the aluminium.

One-off correction, by contrast, starts with heavily oxidised or stained metal that may not have been polished in a year or more. We begin with a coarser compound to level the surface, which takes longer and requires more elbow work, then step through finer grades to bring back the mirror finish. The result is the same, but the clock runs longer. If your jet has been neglected, budget two to three days and expect the first polish to be the hardest; after that, regular touch-ups every quarter will keep the brightwork looking new and cut each session to a day or less.

Documentation and the photo report after polishing

Every brightwork polish at Bern closes with a written report and time-stamped photographs. We document which surfaces were polished, the compounds and sealants used, and any corrosion or damage noted during the work—pitting on the leading edge, staining around exhaust outlets, cracking in window surrounds. The photo set includes before-and-after pairs of each major area, close-ups of any defects, and wide shots of the finished aircraft on stand. If we find something that needs engineering attention—a corroded rivet, a delaminating edge strip—it goes into the report with a photograph and a recommendation.

The report is emailed as a PDF within hours of completion, and we can forward a copy to your maintenance-tracking system or upload it to a shared portal if that suits your workflow. For fleet operators the documentation builds a history of brightwork condition over time, which helps schedule future polishes and spot recurring issues. The photo evidence also satisfies pre-purchase inspectors, insurers and anyone else who wants proof that the aircraft is being maintained to a high standard. We treat the paperwork as part of the service, not an afterthought.