Boeing announced new firm orders from two Indonesian airlines–ambitious low-fare 737 operator Lion Air and Garuda Indonesia–for a total of 60 airplanes. An order for 56 B737-900ERs from Lion Air raises the airline’s order total for the type to 178. Garuda’s commitment for four 777-300ERs accompanies a conversion of an order for six deferred 777-200ERs to the larger type, bringing its total -300ER commitment to 10.

Lion Air launched the up-to-220-seat variant with a mid-2005 order for 30, of which nine have been delivered. New aircraft are currently arriving at the rate of one a month, with the 122nd scheduled for delivery in 2014.

Long-term fleet plans have 60 of the Lion Air aircraft dedicated to Indonesian domestic services, while the balance will be allocated to the planned joint-venture operations in other Asia Pacific markets, including the new Lion Langkawi, also announced on Tuesday.

Lion Air orders account for all but 49 of the 227 ordered–900ERs, which are also being manufactured for seven other customers. Orders for all variants of the 737 now total more than 7,700 units.

Meanwhile, Garuda’s aircraft will support route-network expansion with nonstop long-haul European services from Jakarta to Amsterdam and London. Simultaneously, Garuda has converted six previously deferred orders for 777-200ER variants to -300ERs.

The Indonesian carrier also has been named as a previously unidentified customer for seven 737-800s ordered last year, and has converted 18 previously deferred 737-700 orders to -800s. It continues to hold options on 25 more 737s and ten 777-300ERs.