Two quotations for cleaning the outside of small sightseeing aircraft can look identical on the surface and still need very different crews. One supplier lists a machine, the other lists a package of work, and the buyer is left guessing how many people each option requires, for how long, and who stands beside the operator the whole time. Labor needs on this kind of job are not published anywhere as a standard figure, and they cannot be borrowed from a vehicle wash or a workshop floor. What can be compared is the work itself: the surface inventory, the task chain, the steps that need a second pair of hands, the walking and setup that sit around each airframe, and one short recorded trial on your own aircraft. That comparison is what turns a price line into a crew plan.
Define one fuselage as the unit you compare
Labor answers only become comparable when every bidder prices the same unit. For these airframes, that unit is one cleaning round on one aircraft, described in writing before any price is discussed. State which zones are included and which are held back: upper and lower surfaces, the canopy or glazing, the leading edges, the cowlings, the landing gear and wheel wells, the propeller area, the markings and decals, and any area your own documentation treats as restricted.
Write down the condition you are quoting against as well, because soil state is what drives handling. Sun-baked film, insect residue on leading edges, oil and hydraulic staining near the gear, and loose abrasive dust each need different handling and therefore different hands. If a bidder is allowed to assume a clean aircraft while your fleet is not clean, their labor answer is not the same product as yours.
Break the round into a task chain and count hands per task
A single crew-size figure tells you almost nothing. Split the round into the steps your people actually perform, then ask how many people each step needs and whether that step can run at the same time as another. A typical chain runs like this: move the aircraft to the cleaning position and secure it, dry-remove loose abrasive dust, cover or mask openings and restricted areas, apply the cleaning medium and let it dwell, work the surface, rinse or wipe, collect and contain run-off, dry the surface, remove the covers, inspect, and document.
Once that chain is on paper, the comparison becomes concrete. One bidder may plan a single operator who performs every step in sequence. Another may plan an operator plus an assistant who handles covering, drying and inspection while the operator works the surface. Those two plans can carry the same price and completely different elapsed time, and only one of them leaves someone watching the aircraft while a medium is dwelling.
Mark the steps that genuinely need two people
On small sightseeing aircraft a handful of steps are hard to perform alone, and they are where a one-operator plan quietly fails. Moving and positioning the airframe, holding a cover in place while the surrounding area is worked, supporting a long panel or canopy edge, keeping a watch on a dwelling medium while the operator rinses, and signing off the completed inspection are commonly two-person tasks. Whether your own procedure treats them that way is a documentation question, and it should be settled before a single-operator plan is accepted.
Ask every bidder to mark which steps in their chain they assume one person can complete and which they do not. A labor comparison that hides this assumption is not a comparison; it is one supplier's habit written into a number.
Price the support work that surrounds each airframe
Most hidden labor on this job never touches the panel. It sits in the steps around it: walking to the water connection, to the power source, to consumables and covers, to the run-off collection point, and to wherever the equipment is refilled, drained or moved between bays. Ask each bidder who performs those movements and how often, then look at where their equipment would physically stand in relation to your parking position.
The site's own sightseeing aircraft exterior cleaning page describes fixed and mobile steam cleaning units for vehicle-type duties, including units arranged for a continuous water supply so refilling does not interrupt the work, and hose and power reach that decides how often a machine has to be relocated. Those are exactly the characteristics that change walking distance in your own bay. Where the published range does not fit your spacing or services, customized steam cleaning equipment is the route to ask about, and the configuration questions should be settled in writing before the labor comparison is closed.
Measure one round on your own aircraft instead of quoting figures
There is no published labor standard for cleaning these fuselages, and no figure in a supplier catalogue can be treated as one. The Fixed Steam Cleaning Machine PowerDe HW02 page, for example, is a machine description with specification rows; it is not a crew plan and it publishes no staffing answer for an airframe. The honest alternative is a short bounded trial on one of your own aircraft, run under the rules you would apply in service, with the task chain timed and the people counted as it happens.
- One named operator and one named assistant, both observed for the whole round.
- The task chain above timed step by step, including setup, covering, drying and documentation.
- Every interruption recorded: waiting for a machine to come ready, refilling, relocating it, hunting for a fitting, chasing a cover.
- Rework recorded separately, because a step performed twice is double the labor and not a rounding detail.
That record becomes your baseline. Repeat the same round with a different method or a different machine and the difference you observe is real rather than claimed. Hand the identical baseline sheet to every bidder and ask them to price against it, so each labor answer arrives in the same shape.
Put skill, training and release into the labor column
On an aircraft, cleaning is work on a regulated product, and the people performing it may need to hold a recognised position or have the task signed off, depending on your approval setup. Training time, supervision during the learning period, and the inspection or release step after cleaning all consume people. A bidder who leaves them out of their labor answer is not comparing like with like.
Ask each supplier who supervises a new operator, who signs the completed work, and whether that person sits inside the quoted crew or is added on top. Read their equipment literature with the same attention: the rows on a specification sheet covering continuous supply, heat-up, hose reach and duty cycle are staffing statements as much as they are machine statements.
Keep the aviation boundary where it actually is
No claim should be made here that any listed machine is qualified for aircraft work. The published cleaning pages on this site describe vehicle, parking-facility and related applications; they do not state an aviation duty, an aircraft qualification, or a measured cleaning rate for an airframe. Treat any machine in that range as an engineering starting point that your own organisation must prove inside your maintenance documentation and approval rules.
The consequence for labor is direct: whoever approves the method also decides how much of it one person may perform alone, and that requirement belongs in the comparison before equipment is discussed at all. Restricted areas, openings, glazing, markings and control surfaces should be named in the procedure and excluded from the work being timed, so the labor figure describes only the work you are permitted to do.
Compare a full fleet round, not one cleaned aircraft
A single airframe is where the labor figure is measured; a fleet round is where it is paid. Between aircraft there is movement, restocking, equipment turnaround, and the idle time of people waiting for a machine to come ready again. A plan that looks efficient on one aircraft can waste crew time across several of them, while a plan with a slower per-airframe figure can keep a crew working steadily.
Ask each bidder to state their labor against a complete cycle: one round on one aircraft, plus the turnaround between aircraft, plus the cleaning and inspection record each round produces. Once the sequence repeats, the crew plan for the second and third aircraft is the one that matters, and the trial record you produced earlier already shows whether that sequence holds.
Record one fuselage so the next comparison starts higher
Close each round with a short record kept against that aircraft: the zones cleaned and excluded, the soil state found, the method used, the crew roles filled, the rework required, and what took longer than planned. That record is not paperwork for its own sake. It is the only figure you will trust when the next quotation arrives, another method is proposed, or another aircraft joins the fleet.
Teams cannot compare labor needs for cleaning small sightseeing aircraft fuselages by reading a figure off a datasheet. They compare them by fixing one fuselage as the unit, splitting the round into tasks and marking the two-person steps, pricing the support movement around each airframe, running one recorded trial of their own, and placing training, supervision and release inside the crew count. Do that and the quotations stop being descriptions of machines and become descriptions of the crews you will actually have to staff.
