How passenger planes are converted into cargo jets filled with life-saving medical supplies

Throughout the coronavirus pandemic, we've seen all the major U.S. airlines slash their schedules and reduce frequencies.

With near-zero demand for air travel, airlines are stuck in a bind — what do they do with all their planes that have nowhere to go?

Most of the jets end up getting parked in the desert in the southwestern United States. That's because the low humidity of the high desert helps prevent corrosion. Plus, there's much more space in the southwest, so there's plenty of room for large planes at facilities such as Pinal Airpark and Roswell airport.

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Though you may think that airlines should use this time to retrofit their grounded fleets with lie-flat seats and other passenger improvements, truth is that they're looking to save every dollar they can. That's why it's unlikely we're going to see any acceleration in cabin retrofit programs.

But planes are a massive fixed cost, and they make no money stored in the desert. So the latest trend we've seen is airlines converting some of their passenger jets to (temporary) cargo planes to carry, among other things, masks and other desperately needed medical supplies across the world.

But how exactly do they do that?

First, some background: though passenger jets primarily carry people, they also have a good amount of cargo space below the main deck. In fact, I've had my fair share of experiences walking around the cargo hold of the Boeing 787 (take a look at my Instagram for those shots).

As such, passenger airlines could continue flying their jets without passengers by just filling the cargo hold. To maximize how much they can carry, however, we've seen airlines make temporary modifications to their passengers cabins.

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Related: Behind the scenes at Delta's cargo hub

After all, if they're not flying any passengers, what's the point in leaving the cabin empty?

The simplest way to put supplies in a passenger jet

There are two different models that we've seen airlines adapt for putting cargo in the main deck.

The fastest way is to just cover the seats and onboard electronics with protective film, fasten the cargo directly into the seats, wrap it with some netting and call it a day.

As you can imagine, that is not necessarily the best way to maximize space since you're limiting how much cargo you can carry to whatever fits into the seats. Plus, you have to be very careful not to damage the expensive seats.

This is exactly what Lufthansa did with four of its Airbus A350s. The planes operate daily cargo flights from Beijing and Shanghai stocked with masks urgently needed across Germany.

The much improved method to maximize cargo space in a passenger jet

Hence, the reason for the second, more time-intensive and costly option — removing the seats from the plane. Air Canada recently took three of its flagship Boeing 777-300ERs and converted them to cargo jets using this method.

They removed the seats, protected the TVs and other cabin electronics and got the plane ready to carry important cargo like masks and ventilators.

When it comes time to load the plane, the airline just piles boxes on top of each other, and fastens them together using a netting that's tied to the floor.

This process was developed, produced and implemented within six days. These modifications were then certified and approved by Transport Canada, the government body regulating transportation.

Airbus has come up with an improvement to the method that Air Canada used. It's now offering customers operating A330s and A350s a solution that makes it easier to load cargo and maximize the volume they can fill. Specifically, the Airbus solution allows airlines to put pallets on the floor of the passenger cabin and connect them to the seat tracks.

According to Airbus, a full conversion once seats are out takes two people two hours, which is incredibly quick and potentially worthwhile to maximize the cargo space. Additionally, once this process is approved by the aviation safety regulatory boards, airlines can complete the modification without individual approval from local safety boards for every jet that gets this treatment.

Related: Left without flyers, airlines are using passenger jets for cargo

How does the cargo get into the plane?

Regardless of which conversion process airlines choose, you may be wondering — how do you get the cargo into the passenger deck? After all, there's no large freight door like there is on dedicated cargo jets.

Related: The retired American Airlines 767s are being turned into cargo planes

Well, airlines can only carry cargo that fits through the passenger doors. That means carriers are putting cardboard boxes one by one into the passenger compartments.

Take a look at these two pictures shared by Lufthansa. As you can see, the carrier is loading freight via the passenger doors. A forklift brings the cargo container up to the plane, where employees then need to unpack the container and put the boxes into the cabin.

Bottom line

We're living in unprecedented times. Just two months ago I was reviewing the Air Canada business class product on the Boeing 777-300ER. Now, the carrier, along with many others, is using thise exact jets to carry medical supplies around the world.

In fact, the process of converting the passenger planes to cargo ones isn't nearly as advanced as you might think. Even if the airlines deploy the most sophisticated conversion by removing seats from the main deck, it doesn't actually take too long.

And that's good news, because I can't wait for the time when the airlines are hurrying to re-convert their jets back into passenger service.