A number of countries have banned Boeing's 737 MAX 8 medium-haul workhorse jet from their airspace in response to the Ethiopian Airlines crash that killed all 157 people on board.
Several airlines have grounded the MAX 8s in their fleets, but many others are continuing to fly the plane pending an investigation into the crash and possible guidance from Boeing itself.
Airlines still operating the model have been restricted by the airspace bans. Air Canada, for example, was obliged to cancel some flights to London because of Britain´s ban on the aircraft.
The Nairobi-bound plane was the same type as the Indonesian Lion Air jet that crashed in October, killing 189 passengers and crew -- and some officials have detected similarities between the two accidents.
More than 370 737 MAX 8s are in service around the world, with nearly 5,000 on order.
National bans on the 737 MAX
New Zealand
The United Arab Emirates
Kuwait
Australia
China
All European Union countries
India
Indonesia
Malaysia
Namibia
Oman
Singapore
Airlines grounding 737 MAX jets
flydubai
Aerolineas Argentinas
Aeromexico
Cayman Airways
Comair
Eastar Jet
Ethiopian Airlines
Gol Airlines
Icelandair
LOT
MIAT Mongolian Airlines
Norwegian Air Shuttle
Smartwings
Turkish Airlines