Brightwork Polish at Memmingen (Allgäu Airport) (EDJA)

Why does brightwork matter at a foothills airport?

Memmingen sits at 633 metres elevation in the Allgäu foothills, one of Germany's highest commercial airfields. Winter comes early, lasts longer, and brings de-icing fluid, road salt from the apron and freeze-thaw cycles that accelerate oxidation on bare aluminium. Leading edges, inlet rings and exhaust cones lose their lustre faster here than at sea-level bases, and once the oxide layer takes hold it traps moisture and spreads.

Brightwork polish removes that corrosion mechanically—abrasive compounds in decreasing grit, worked by hand until the metal reflects cleanly—then applies a hydrophobic sealant that slows oxygen contact. The result is a mirror finish that stays brighter through the alpine winter and makes the next polish cycle shorter. We recommend the service two to four times a year if the aircraft is based or frequently overnight here, or as part of a complete detail when you're already committing the stand time.

What changes at Memmingen (Allgäu Airport) for a multi-day polish?

The airport operates 06:00 to 22:00 local, with a single-hour PPR extension to 23:00 for delayed arrivals; after that the field is closed until morning. Brightwork polish takes one to three days depending on the amount of bare metal, so we start at first light and work through the daylight window, breaking when the aircraft needs to depart and resuming when it returns or moving to the next jet in a fleet programme.

General aviation uses Apron 3 on the south side of the 2,630-metre runway, opposite the passenger terminal. There is no separate FBO; ground handling is provided by ALLgate, the airport's wholly owned subsidiary, which also manages airside access for contractors. We coordinate entry and stand assignment through ALLgate and the airport's flight operations before your arrival, so the team and equipment are already apronside when you shut down.

Memmingen is Level 2 schedules-facilitated—not fully slot-coordinated—but the airport asks operators to confirm arrival times in advance. If you're slotting a polish between charter legs, build contingency into the schedule; weather diversions or late inbound passengers can compress the window, and we would rather defer a section than rush sealant application in failing light.

Which surfaces do you polish, and in what order?

Every exposed aluminium surface that oxidises: wing and horizontal-stabiliser leading edges from root to tip, engine inlet rings and spinner cones, exhaust petals and thrust-reverser buckets, and any bright trim around windows or along the cheat line. We start with the inlet rings because they're small, accessible and show results quickly—useful if the owner or a passenger walks out mid-job. Leading edges come next, worked in sections so we can mask, polish, seal and unmask without leaving compound residue overnight. Exhaust surfaces are last; they run hotter and pick up carbon, so they need heavier abrasive and more passes.

Nacelle bellies and gear-bay brightwork are included if they're bare metal, but we clean them first to avoid dragging brake dust or hydraulic fluid onto the wing. Window surrounds are polished with finer compound to avoid any risk of scratch transfer to the glass. Once a surface is mirror-bright we wipe it with isopropyl alcohol, then apply sealant and buff it to a dry shine. The sealant is invisible but hydrophobic—water beads and rolls off, taking dust with it—and it buys you two to three months before oxidation reappears.

Can you fit brightwork into a quick turnaround at Memmingen?

Not if 'turnaround' means two hours between legs. Inlet rings and spinners alone take half a day for a pair of engines—more if they haven't been polished in a year—and leading edges can run another full day depending on span and oxide depth. We can split the work across multiple overnights if the aircraft returns to Memmingen regularly: inlets and exhausts one visit, leading edges the next. That approach works well for charter operators with a Alps-season schedule, because each visit delivers a visible improvement without grounding the jet for three consecutive days.

If you do have a longer weather hold or an unplanned maintenance day, call as soon as you know. We keep polishing kits and sealant in the van, and Memmingen's location—four kilometres from town, straightforward airside access through ALLgate—means we can be on the apron inside two hours if the airport approves the entry. The limiting factor is daylight and the 22:00 curfew; we won't start a leading-edge section if we can't seal it before the field closes, because unsealed metal exposed to overnight dew defeats the purpose.

How does alpine weather affect the polish and the schedule?

Cold soaking is the main enemy. When the aircraft lands after a high-altitude cruise, the wing and nacelle skins stay below freezing for an hour or more, even if the apron is warm. Any moisture in the air—morning fog, afternoon drizzle, even high humidity—condenses instantly on that cold metal and freezes. You cannot polish through frost, and sealant won't bond to a cold surface, so we wait for the airframe to stabilise above five degrees Celsius before we start. In winter that can mean a two-hour delay after block-in, which is why we prefer to begin work on the second morning if the jet overnighted and the skins have equalised.

De-icing fluid is the other consideration. If the aircraft has been treated with Type I or Type IV and you're departing before we finish, we mask the polished sections and leave the rest for the next visit. Glycol residue dulls fresh brightwork and has to be stripped with a solvent wash, which adds time. Conversely, if you're arriving into Memmingen for a planned polish and snow is forecast, we'll delay the start until after the weather clears and the apron is dry. A perfect mirror finish lasts years if it's sealed properly; there's no point compromising it to meet an arbitrary calendar date.

What about recurring brightwork as part of a fleet programme?

Fleet operators—charter groups with three or four super-midsizes, or a fractional programme with a pair of long-range jets rotating through Memmingen—get the most value from scheduled brightwork because the work becomes predictable and the results compound. We set a quarterly or four-month interval, tie each polish to a planned overnight or a lighter week in the charter calendar, and track which sections were done when. By the third or fourth visit the oxidation is catching early, before it etches the surface, so each cycle takes less time and the metal stays brighter longer.

Scheduling through a single point of contact—your chief pilot or the fleet manager—keeps the programme tight. We send a reminder a month out, confirm stand availability and airside access with ALLgate two weeks before, and arrive with a job card that shows what was polished last time and what's due now. If one aircraft in the fleet is AOG or stuck on a long charter, we shift to the next tail and catch up when it rotates back. The goal is to make brightwork as routine as a progressive cabin detail: expected, efficient, and invisible to your passengers until they notice the inlet rings gleaming on the walk-around.