Start with the surface condition, not with the accessory list
Light soiling on a fuselage is usually dust, pollen, exhaust film and insect remains. Those soils respond to heat and short dwell time rather than to impact. Soiling that has been baked on through many ground cycles, or that sits along lap seams and rivet lines, needs a longer dwell and a softer mechanical follow-up. Before any accessory is chosen, write down three things: what the soil actually is, what the surrounding material is, and what must stay dry. That record is what an equipment supplier needs to recommend a configuration, and it is also the record your own inspectors will check afterwards.
Nozzle type: shape and distance carry the risk
A narrow-point nozzle concentrates energy on a very small spot. On painted metal or a coated composite that is the fastest way to strip gloss, lift a decal edge or heat a single rivet line. A fan-spread or wider nozzle distributes the same heat across a band, which suits large flat panels and lets the operator watch the boundary between cleaned and uncleaned surface. For a small aircraft, two practical checks matter more than the accessory name:
- Test the nozzle on a hidden area — the underside of a fairing, an inner panel edge — and hold the tested distance and pass speed constant so the trial result is repeatable.
- Keep the nozzle moving and perpendicular. A stationary nozzle, or one held at an angle that drives flow into a seam, is the failure mode to design out.
- Treat canopy glazing, painted decals, antenna areas and any opening as excluded zones. They are cleaned by a different, gentler method.
Because published cleaning-machine pages on this site describe vehicle, parking-facility, engine-compartment and medical applications, an aircraft-specific nozzle set is not something to assume from the catalogue. Where the standard accessory set does not match the fuselage, the customization route on customized steam cleaning equipment covers module combinations — water washing, steam, foam and dust collection — along with mobile platform and structure changes, which is the correct place to start a fuselage conversation.
Dry steam versus wet steam: the setting that controls runoff
For a fuselage, water volume is the second risk after heat. A wet-steam setting carries more free water, which means more runoff to manage and more chance of water finding a drain hole, static port area, seam or fastener hole. A drier setting does most of its work through temperature and dwell, leaves less standing water on the skin, and dries faster between passes. Machines in PowerDe's Cleaning Equipment Series switch between dry and wet steam modes, so the operator can run the drier mode on the skin and reserve the wetter mode for a deliberately wetter rinse of an unpainted, non-critical part. Fixed installations such as the Fixed Steam Cleaning Machine PowerDe HW02 list dry/wet steam among their published parameters; on that page the steam temperature and vapor pressure are printed as 160° and 0.8 Mpa. Those figures are vehicle-oriented catalogue data and must be confirmed against an aircraft surface before they are treated as a working setting — no aircraft coating should be cleaned on the strength of a catalogue number.
Water supply, drainage and the work area itself
Aircraft cleaning is usually done on hardstanding, under a canopy or inside a hangar bay, and the runoff has to go somewhere controlled. Two accessory groups do the quiet work here. The first is recovery: a vacuum attachment with a flat nozzle, plus a tank for the collected water, keeps the fuselage and the floor from staying wet. PowerDe publishes that vacuum-suction arrangement — a vacuum cleaner with a flat nozzle and a sewage tank — on the Driving Style Steam Cleaning Machine PowerDe PWD02 page. It is not published for every model, so do not read it into a hand-pushed or fixed unit without checking that unit's own page. The supply side is simpler: on the fixed HW02 page the published water-inlet line reads "tap water, 4-point internal-tooth joint", which decides how the machine is plumbed on site and whether a remote stand needs a longer hose run.
Ask for the hose and wand lengths, the machine footprint and the working voltage before the unit arrives. The HW02 page gives 1,200 × 800 × 1,200 mm including handles and a 220 V working voltage, and the hand-pushed models in the series are listed as L1150 × W520 × H1030 mm. Those numbers tell you whether the machine reaches around a parked airframe without being dragged over cable runs or parking-stop blocks.
Mobile versus fixed: where the machine stands relative to the airframe
A fixed unit suits a permanent wash position with plumbing and drainage already laid. A mobile unit follows the aircraft and suits operators who clean at whatever hardstanding is available, including narrow spaces. In PowerDe's range the mobile, driving-style machines are the ones described for indoor garages and narrow outdoor parking spaces, with dry steam, wet steam and hot water modes; the variant that includes a battery also lists leakage, short-circuit, high-temperature, high-voltage and water-shortage protection among its safety designs. The count of protection items varies between pages on this site, so list the items and confirm the set for the exact variant rather than quoting a number.
What to confirm with the supplier before ordering accessories
- Which nozzle shapes are actually available for the model, and which one is recommended for a painted or coated skin at a stated distance.
- Whether the steam-temperature and pressure figures published for a model are offered as adjustable settings, and what the lowest useful steam output is.
- Whether vacuum recovery and a sewage tank are included, optional or absent for that model.
- Hose, wand and cable reach, and the machine's footprint relative to the stand or hangar bay.
- Whether a foam module can be added for dwell on stubborn deposits, so heat does not have to do all the work.
Run a written trial on one airframe before buying a set
Choose one aircraft, one panel area and one accessory combination. Record nozzle type, distance, pass speed, steam mode, and what happened to gloss, decals and seams. Photograph the test area before and after under the same light. Take that record to the equipment supplier: it converts a vague request about sightseeing aircraft exterior cleaning into a specific configuration question, and it gives you an acceptance basis for the finished job. The accessories that help are the ones that let you apply the least heat and the least water for the longest safe dwell — and prove it on your own surface first.
