The Boeing 737 Max—once the darling of the aviation industry—has come under scrutiny since Lion Air flight JT610 crashed into the Java Sea last month.
The aircraft, a 737 Max 8, had only been in operation for two months before the accident, which killed all 189 on board. It was supposed to be a “game changer” and the “short-haul plane of the future,” but investigators have since uncovered problems with the plane—the first of its kind involved in a crash—as they try to unravel what went wrong.
After the crash, they’ve learned that the airspeed indicators on the Lion Air plane had malfunctioned for its last four flights, and that another flight-control system called the “angle of attack” sensor—meant to prevent the plane from stalling by gauging whether its nose is pointed too high for its current speed—was also replaced the day before the crash.
As Boeing and the US Federal Aviation Administration issued safety directives on the feature, pilots and airline regulators have responded to say the automated stall-prevention system wasn’t adequately publicized and that flight crews thus weren’t prepared on how to handle it.
As of the end of October, Boeing had received 4,783 orders for its 737 Max planes, having delivered 241 of them, according to the aviation firm’s data. Here’s what we know about the inventory:
All the airlines that have ordered and received a 737 Max
At least 76 airlines have ordered a 737 Max (Boeing didn’t break down the models), and 40 have received them. Its data also included 878 unidentified customers, though none of them had received the planes yet.
Boeing’s first order for the 737 Max came from Southwest, which received its first delivery on Aug. 26, 2017. Overall, Southwest has placed and received the most orders—with 26 delivered out of 280 orders—of any airline.
But it was Lion Air that got the honor of receiving the first-ever delivery on May 16, 2017. Its subsidiary Malindo Air was the first to fly the Max 8 on a commercial flight a week later on May 22, 2017. Lion Air has the third most number of orders at 201, and has received 13 of the planes.
Here’s a list of the airlines that want a 737 Max:
| Airline | Country | Orders |
| Unidentified Customer(s) | Unidentified | 878 |
| Southwest Airlines | USA | 280 |
| flydubai | United Arab Emirates | 251 |
| Lion Air | Indonesia | 201 |
| GECAS | USA | 175 |
| Air Lease Corporation | USA | 168 |
| SpiceJet | India | 139 |
| GOL Linhas Aereas | Brazil | 135 |
| Ryanair | Ireland | 135 |
| United Airlines | USA | 135 |
| Jet Airways | India | 125 |
| Norwegian Air Shuttle | Norway | 110 |
| Aviation Capital Group | USA | 103 |
| AerCap | Ireland | 100 |
| American Airlines | USA | 100 |
| VietJet Air | Vietnam | 100 |
| SMBC Aviation Capital | Ireland | 91 |
| China Development Bank Fin. | Hong Kong | 78 |
| Avolon Aerospace Leasing Limit | Cayman Islands | 75 |
| Boeing Capital Corporation | USA | 75 |
| Turkish Airlines | Turkey | 75 |
| BOC Aviation Limited | Singapore | 73 |
| TUI Travel PLC | United Kingdom | 72 |
| Air Canada | Canada | 61 |
| Copa Airlines | Panama | 61 |
| Aeromexico | Mexico | 60 |
| WestJet Airlines | Canada | 55 |
| CALC – China | Hong Kong | 50 |
| China Southern Airlines | China | 50 |
| Garuda Indonesia | Indonesia | 50 |
| ALAFCO | Kuwait | 40 |
| Virgin Australia Airlines | Australia | 40 |
| CIT Aerospace LLC | USA | 37 |
| SilkAir | Singapore | 37 |
| Ruili Airlines | China | 36 |
| Alaska Airlines | USA | 32 |
| SunExpress Airlines | Turkey | 32 |
| Ethiopian Airlines Group | Ethiopia | 30 |
| Jackson Square Aviation | USA | 30 |
| Korean Air | South Korea | 30 |
| UTair Aviation | Russian Federation | 30 |
| Donghai Airlines | China | 25 |
| Malaysia Airlines | Malaysia | 25 |
| Timaero Ireland Limited | Ireland | 22 |
| Business Jet / VIP Customer(s) | USA | 21 |
| Air Europa | Spain | 20 |
| Avolon – Ireland | Ireland | 20 |
| Goshawk Aviation Limited | Cayman Islands | 20 |
| Oman Air (SAOC) | Oman | 20 |
| Icelandair | Iceland | 16 |
| Aerolineas Argentinas | Argentina | 11 |
| Air China | China | 11 |
| China Eastern Airlines | China | 11 |
| Air Peace | Nigeria | 10 |
| JIA | Japan | 10 |
| Okay Airways Company Limited | China | 9 |
| Arik Air | Nigeria | 8 |
| Comair Limited | South Africa | 8 |
| Travel Service | Czech Republic | 8 |
| Xiamen Airlines | China | 8 |
| Blue Air | Romania | 6 |
| Enter Air Sp. z o.o. | Poland | 6 |
| Hainan Airlines Holding | China | 6 |
| Nok Air | Thailand | 6 |
| Fiji Airways | Fiji | 5 |
| Jetlines | Canada | 5 |
| SkyUp Airlines | Ukraine | 5 |
| TAROM Romanian Air Transport | Romania | 5 |
| Air Niugini | Papua New Guinea | 4 |
| ICBC Leasing | China | 3 |
| Shandong Airlines | China | 3 |
| Shenzhen Airlines | China | 3 |
| Turkmenistan Airlines | Turkmenistan | 3 |
| Qatar Airways | Qatar | 2 |
| 9 Air | China | 1 |
| JSC Aircompany SCAT | Kazakhstan | 1 |
| Mauritania Airlines | Mauritania | 1 |
Here’s a list of all the airlines that have received them:
| Airline | Country | Deliveries |
| Southwest Airlines | USA | 26 |
| Air Canada | Canada | 18 |
| American Airlines | USA | 16 |
| Norwegian Air Shuttle | Norway | 14 |
| Lion Air | Indonesia | 13 |
| Air Lease Corporation | USA | 12 |
| China Southern Airlines | China | 12 |
| Air China | China | 11 |
| China Eastern Airlines | China | 11 |
| GECAS | USA | 11 |
| WestJet Airlines | Canada | 9 |
| Xiamen Airlines | China | 8 |
| flydubai | United Arab Emirates | 7 |
| United Airlines | USA | 7 |
| Hainan Airlines Holding | China | 6 |
| Aeromexico | Mexico | 5 |
| SilkAir | Singapore | 5 |
| TUI Travel PLC | United Kingdom | 5 |
| Aviation Capital Group | USA | 4 |
| Ethiopian Airlines Group | Ethiopia | 3 |
| GOL Linhas Aereas | Brazil | 3 |
| ICBC Leasing | China | 3 |
| Icelandair | Iceland | 3 |
| Shandong Airlines | China | 3 |
| Shenzhen Airlines | China | 3 |
| Turkish Airlines | Turkey | 3 |
| AerCap | Ireland | 2 |
| Aerolineas Argentinas | Argentina | 2 |
| BOC Aviation Limited | Singapore | 2 |
| Copa Airlines | Panama | 2 |
| Qatar Airways | Qatar | 2 |
| SpiceJet | India | 2 |
| 9 Air | China | 1 |
| Avolon – Ireland | Ireland | 1 |
| Business Jet / VIP Customer(s) | USA | 1 |
| Garuda Indonesia | Indonesia | 1 |
| JSC Aircompany SCAT | Kazakhstan | 1 |
| Mauritania Airlines | Mauritania | 1 |
| SMBC Aviation Capital | Ireland | 1 |
| Travel Service | Czech Republic | 1 |