Boeing is confirming reports that Indonesian carrier Lion Air today will sign a commitment for 201 Boeing 737 MAX aircraft and 29 737-900ERs in a transaction worth $21.7 billion at list prices. If finalized, the deal will be the largest commercial aircraft order in Boeing’s history in terms of both dollar value and number of aircraft.

Early yesterday, the White House issued a statement disclosing a slew of aircraft orders for Boeing and Sikorsky from Southeast Asian operators. President Barack Obama is visiting Indonesia this week and is scheduled to witness the official announcement of the Boeing order Friday morning in Bali.

The Lion Air order includes purchase rights for 150 additional aircraft. Aviation Week reported on Nov. 4 that Lion Air had issued a request for proposals to Airbus and Boeing for 200 narrowbody aircraft. Before the latest deal, Lion Air had 115 737-900ERs on order, according to the Aviation Week Intelligence Network.

In addition, Boeing and Singapore Airlines (SIA) announced an order for eight more Boeing 777-300ERs, bringing SIA’s total to 85 777s ordered, including 27 -300ERs. The new order previously was recorded on Boeing’s orders and deliveries website but attributed to an unidentified customer.

The White House also says Sikorsky secured a deal to sell 12 UH-60 Black Hawk helicopters to Brunei’s military.