Brightwork Polish at EuroAirport Basel-Mulhouse-Freiburg (LFSB)

What changes at EuroAirport Basel-Mulhouse-Freiburg?

EuroAirport sits at 885 feet elevation, three and a half kilometres north-west of Basel city centre, with Mulhouse twenty kilometres away and Freiburg forty-six. The field operates under a binational French-Swiss treaty; Air Service Basel's FBO and hangar occupy the Swiss sector at CH-4030 Basel-Airport, which means customs and ramp-access procedures follow Swiss rules even though the main terminal straddles both jurisdictions.

Two runways serve the airport: 15/33 at 3,900 metres and 07/25 at 1,715 metres. The longer runway handles all business-jet movements in normal conditions. The airport is listed as Level 2—schedules facilitated—so slot coordination does not apply to general aviation, and PPR is straightforward through the handler. Stand availability on the private apron is rarely an issue outside the morning and evening waves of scheduled traffic.

The tri-national location means weather patterns shift quickly between the Rhine valley and the Jura foothills. Winter brings damp cold that accelerates tarnish on bare aluminium; summer heat and industrial haze from the Rhine corridor leave a fine film on polished metal. Both argue for regular brightwork maintenance if the aircraft is based or frequently parked here.

How does the brightwork-polish turnaround work on the Basel ramp?

We book stand time and GPU through Air Service Basel, then meet the aircraft on the private apron in the Swiss sector. If the jet arrives from outside Schengen, the handler clears customs and tows or taxis the aircraft to the agreed stand; if it is already EU-registered and inbound from a Schengen field, the process is faster. Our airside escort—valid for both the Swiss and French sectors—covers the entire duration, so the crew does not need to remain on the ramp.

Brightwork polish begins with a solvent wipe to remove oils, exhaust residue and any wax or sealant left from the last treatment. Each surface is then worked by hand with graduated compounds—cutting first to remove oxidation and micro-scratches, then refining to a mirror finish. Inlet rings and spinner domes take the most time because the curves must be polished without flat spots. Leading edges, especially on winglets and stabilisers, are checked for impact marks; light corrosion is blended out, deeper pitting is noted in the tech log for engineering review.

Once the metal shows a uniform reflection, we apply a thin sealant coat that bonds to the aluminium and slows the return of tarnish. The sealant cures within an hour, so the aircraft can depart the same day if the polish was scheduled as an overnight or early-morning job. For a full brightwork pass on an ultra-long-range jet with extensive bare-metal trim, we ask for two to three days on stand.

Why does bare metal tarnish faster at some bases than others?

Aluminium oxidises whenever it meets moisture and oxygen; the rate depends on humidity, temperature swings, airborne salts and industrial pollutants. An aircraft parked near the coast or in a humid river valley will show haze on polished inlet rings within weeks, while the same jet stored in a dry high-desert climate may stay bright for months. EuroAirport sits in the Upper Rhine plain, where morning fog is common from October through March and summer humidity climbs as warm air moves up the valley from the south.

Exhaust residue—sulphur and carbon deposits—also etches into warm metal after each flight. If the engines spool down on the ramp and the nacelles cool slowly, the residue bakes onto the inlet rings and spinner. Polishing every three to four months removes the buildup before it bonds too deeply, which means each session takes less time and preserves more of the original metal thickness.

What does the handler expect when a third-party detailing crew is on the apron?

Air Service Basel, like most European FBOs, requires us to present insurance certificates, airside-pass documentation and a method statement before the first visit. The method statement lists the products we use—compounds, sealants, wipes—and confirms that none will be flushed onto the apron or into the airfield drainage. We carry drip trays for any liquid waste and dispose of used compound and solvent wipes in sealed bags taken off-site.

The handler also expects clear communication about stand occupancy. If the polish is part of a longer maintenance visit and the aircraft will remain on jacks or with panels open, we coordinate with the operator's engineers so that our work does not interfere with access to gear bays or belly panels. When the job is standalone, we agree a release time twenty-four hours in advance so the handler can plan the next arrival on that stand.

GPU supply is arranged through the FBO; we do not plug our own equipment into airfield infrastructure. If the cabin will remain open for concurrent interior work, the handler sometimes requests that both crews share a single escort to simplify access control. That arrangement works well as long as the interior team and the exterior polishers stay in radio contact.

How often should brightwork be polished if the aircraft is based at EuroAirport?

For a jet that night-stops at Basel three or four times a month, we recommend brightwork polish every quarter. The rhythm matches the seasonal shifts: a pass in early spring removes winter tarnish, mid-summer polish clears industrial haze before the holiday peak, autumn treatment prepares the metal for the damp months, and a winter session—ideally in a hangar—keeps oxidation in check when the aircraft spends longer on the ground between charters.

If the jet operates a shuttle pattern—Basel to London, Basel to Geneva, back to Basel—engine inlets and exhaust cones will dull faster because of the higher cycle count and shorter cool-down periods. In that case, a six-week interval for inlet rings and spinners, with full leading-edge work every three months, keeps the brightwork consistent. Charter operators often tie the schedule to their own maintenance calendar, adding brightwork polish the day before a C-check so the aircraft leaves the shop looking complete.

Can brightwork polish happen in winter, and does cold affect the result?

Polishing compound works across a wide temperature range, but sealant application has limits. Most metal sealants cure properly between five and thirty degrees Celsius; below that the chemistry slows and the bond weakens. If the airframe is cold-soaked from an overnight arrival in January, we either wait for the metal to reach ambient temperature—which can take two hours on a calm day—or move the aircraft into Air Service Basel's hangar, where we can control the environment.

Winter also means shorter daylight and the risk of morning frost. We avoid starting a polish session if frost is forecast before we finish, because any moisture trapped under the sealant will cause haze as it evaporates. For that reason, December and January jobs are usually scheduled as hangar visits, while February and March work can happen on the apron as long as the forecast is dry and temperatures stay above freezing through the cure window.