Level 1 — Absolute Beginner

A big plane carries boxes. It is called a cargo plane. The company is called 21 Air.

On September 6, the plane had an accident. It went off the runway in Miami. It hit a van. Five people died.

Amazon used this company to send boxes. Now Amazon says no. It will use other companies.

This is bad for 21 Air. Amazon was its biggest customer. People are still studying what went wrong.

plane

A machine with wings that flies in the sky.

cargo

Goods carried by a plane, ship or truck.

box

A container made of card or wood.

runway

The long flat road where planes land and take off.

accident

A bad thing that happens by mistake.

company

A business that sells things or services.

customer

A person or business that buys something.

died

Stopped living.

Level 2 — Elementary

Amazon announced on Monday that it has stopped all work with a cargo airline called 21 Air. The company said it made the decision after looking at what happened in a serious accident earlier this month.

On September 6, a Boeing 767 flown by 21 Air landed at Miami International Airport but could not stop in time. The aircraft ran off the end of the runway and hit a van. Five people in the van, a cleaning crew, were killed and five others were injured.

The National Transportation Safety Board is investigating. It has said that about one minute before landing, one pilot warned that the plane was flying too fast. After the wheels touched the ground, the pilots talked about taking off again instead of stopping.

Amazon says it will give the work to other airlines. For 21 Air this is a heavy blow, because a single large customer can provide most of a small carrier's income. The investigation may take many months to finish.

announce

To tell people about something officially.

aircraft

Any flying machine, such as a plane or helicopter.

crew

A group of people who work together, often on a plane or ship.

injured

Hurt in an accident.

investigate

To examine something carefully to find out what happened.

pilot

The person who flies an aircraft.

carrier

A company that transports goods or passengers.

income

The money a person or business receives.

Level 3 — Intermediate

Amazon confirmed on Monday that it has paused its operations with 21 Air, the cargo carrier whose Boeing 767 overran a runway at Miami International Airport on September 6. A company spokesperson said the decision followed a review of the circumstances surrounding the crash, and that shipments previously assigned to 21 Air will be redirected to other carriers.

The accident killed five members of a cleaning crew travelling in a van that the aircraft struck after leaving the paved surface, and injured five more people. Investigators from the National Transportation Safety Board have begun releasing early findings. According to the board, one pilot cautioned that the aircraft was flying too fast roughly a minute before touchdown, and the crew discussed a go around after the wheels were already on the runway they went on to overrun.

For a small freight operator, the commercial consequence of losing a customer of Amazon's size is difficult to overstate. Contract air cargo is a concentrated business in which a handful of large shippers account for most available work, and capacity that cannot be sold sits on the ground earning nothing while leases, insurance and crew costs continue.

The suspension is described as temporary, but temporary in aviation frequently means for the duration of an inquiry that may run well beyond a year. Amazon's position is also defensive as well as ethical: a shipper that keeps flying with a carrier under active investigation acquires a share of the reputational exposure, and insurers and regulators both take note of who continued and who paused.

overrun

To go past the end of a runway or boundary.

spokesperson

A person who speaks officially on behalf of an organisation.

redirect

To send something along a different route or to a different place.

go around

A decision by pilots to abort a landing and climb away to try again.

freight

Goods transported in bulk by air, sea, road or rail.

concentrated

Controlled by, or depending on, a small number of players.

lease

A contract to rent equipment such as an aircraft for a period of time.

reputational

Relating to how a company or person is regarded by the public.

Level 4 — Advanced

Amazon's announcement on Monday that it has paused operations with 21 Air reads as a safety statement and functions as a commercial one. The carrier's Boeing 767 overran a runway at Miami International Airport on September 6, struck a van and killed five members of a cleaning crew, injuring five others. The retailer says it reviewed the circumstances and will reassign the affected volume to other operators. What that sentence conceals is the structure of the industry it describes.

Contract air freight is an unusually asymmetric market. A handful of shippers, of which Amazon is the most consequential, control the demand side, while operators supply capacity that is capital intensive, immobile in the short run and perishable in the economic sense: an aircraft parked on a ramp does not merely stop earning, it continues to accrue lease payments, insurance premiums, maintenance intervals and crew currency requirements. A suspension is therefore not a pause in revenue with costs paused alongside it. It is a pause in revenue only.

The early material from the National Transportation Safety Board is consistent with a well documented accident category rather than an exotic one. One pilot cautioned about excessive speed roughly a minute before touchdown; the crew then debated a go around after the wheels were down. Unstable approaches followed by late or abandoned rejection decisions recur throughout the runway excursion literature, which is precisely why carriers are expected to have stabilised approach criteria that make the decision mandatory rather than discretionary. Whether such criteria existed here, and whether they were followed, is the question the inquiry exists to answer.

Amazon's calculation is legible without being cynical. Continuing to tender freight to an operator under active federal investigation transfers a portion of the reputational and potentially legal exposure to the shipper, a transfer that insurers price and plaintiffs' counsel notice. Pausing costs Amazon very little, since substitute capacity exists and the network can absorb the reallocation. It costs 21 Air a great deal. That asymmetry, rather than any judgement the board has yet reached, is what determined the timing of Monday's statement.

asymmetric

Unbalanced, with one side holding far more power or information.

capital intensive

Requiring very large amounts of money invested in equipment.

accrue

To build up or accumulate over time.

premium

The regular payment made for an insurance policy.

unstable approach

A landing approach flown outside the safe limits for speed, height or configuration.

excursion

In aviation, an event in which an aircraft leaves the runway surface.

discretionary

Left to a person's own judgement rather than required by rule.