GE is footing the bill for its Prague engine plant's growing stockpile

More engines sold, far more stock on the shelves

GE Aviation Czech s.r.o. is the Prague arm of GE's aerospace business, where turboprop engines for small passenger and utility aircraft are developed and built. (An s.r.o. is a Czech limited liability company.) Its figures are kept under Czech accounting standards, for the company alone, for the calendar year. In 2025 the business sold more: revenue rose 28.0%, from CZK 874m to CZK 1.1bn.

The warehouse grew faster. Inventories climbed from CZK 904m at the end of 2024 to CZK 1.6bn at the end of 2025. Measured against what the company sells, that stock equals 530 days of revenue, up from 378 days a year earlier. That is 152 days more in a single year. Put simply, at the pace it sold in 2025, the company holds well over a year of sales in materials, parts and engines that are not yet delivered.

This is the turn in the story. A full warehouse can look like readiness for growth. Here it sits next to an operating loss that deepened from CZK -739m to CZK -1.8bn, and a cash balance at the end of 2025 of CZK 17,000, an amount that would fit in a wallet. Stock is money that has already been spent and not yet earned back. This company has a lot of it, and almost none of the other kind.

Why an engine maker fills its shelves

Aircraft engines are a slow business. Castings, forgings and precision parts can take many months to arrive, and each one must be certified before it flies. A maker that expects deliveries next year has to buy and machine parts this year. Stock also piles up when a plant keeps producing while customer orders arrive more slowly than planned, or when a new engine programme is being ramped up and parts are built ahead of the first deliveries.

All of these would show up the same way on the balance sheet. The accounts do not split inventory into raw materials, work in progress and finished engines, and that split is the figure that would tell buying ahead from engines nobody has collected yet. I would watch it first in the next year's statements.

The income statement helps narrow it down a little. Depreciation, the cost of wearing out machines and buildings, barely moved: CZK 193m in 2024 against CZK 192m in 2025. So the deeper loss is not the result of a new plant being written off. EBITDA, which is operating profit with depreciation added back and a rough gauge of what day to day operations earn, fell from CZK -546m to CZK -1.6bn. The gap opened in running costs: people, materials, engineering, overhead. That pattern fits a business spending heavily ahead of revenue, more than one simply losing customers, since revenue did rise.

The scale of the loss stands out against Czech industrial and transport companies. The operating margin, the share of revenue left after operating costs, was -164.6% in 2025, against -84.6% a year earlier. The median of 6 comparable Czech companies was 9.2%. AERO Vodochody AEROSPACE, the Czech aircraft and aerostructures maker, kept 10.3%. GE Aviation Czech sits 173.8 pp below that median. A margin this deep is not a pricing problem. It is the shape of a company whose costs are set for a much larger volume than it currently sells.

The owner, not the customers, is paying for it

If operations lose money and stock keeps growing, someone has to fund both. It is not the bank account. Cash slipped from CZK 23,000 to CZK 17,000 over the year.

The answer sits in equity, the owner's stake in the company. Equity rose by CZK 3.6bn to CZK 4.9bn in a year when the company posted a net loss of CZK 1.4bn. A loss shrinks equity, so a rise of that size can only come from the owner putting money in, either as fresh capital or by turning loans into equity. The figures do not say which. The effect is plain either way: the equity ratio, the share of assets financed by the owner rather than by creditors, jumped from 19.3% to 79.5%. A year earlier the company stood mostly on borrowed money. Now it stands mostly on its parent's.

Interest still bites. The company carried interest costs of CZK 223m in 2025, and with an operating loss of CZK 1.8bn none of that was earned by the business. The net loss barely moved from CZK -1.3bn the year before, which tells you the financial side and the operating side pulled in different directions, not that things got easier.

What a full warehouse means for buyers and for everyone else

For the aircraft makers and operators that buy these engines, a well-stocked plant is good news in the short run. Parts are on hand, deliveries are less exposed to a supplier's bad month, and spare engines are easier to find. In aerospace, where a grounded plane costs its operator every day it stands still, that has real value.

For the company, the same stock is a risk that can take years to show up in the profit line. Parts for an engine programme that sells slower than expected do not spoil, but they can age. Designs change, certifications are updated, customers order a newer variant. Stock that cannot be sold at full value eventually has to be written down, and that write-down lands in the profit line all at once. A company carrying 530 days of sales in inventory has a lot of value riding on the forecast that bought it.

The lesson travels well beyond engines. Anyone running a business with stock, whether a workshop, a wholesaler or a shop, can try the same test. List your stock by age and by how fast each item sells, then check how much of it you could not sell at full price within the next season. The total is the part of your warehouse that is really a bet.

GE Aviation Czech is not short of a backer: its owner has just shown it will put billions of koruna behind the Prague plant. The open question is the warehouse. Revenue grew, but stock grew faster, and until sales catch up with the shelves, the plant is building on its parent's money rather than its customers'.