Credits to MAPA

About The 737-900ER Series

The 737-900ER (Extended Range), which was called the 737-900X before launch, was the final and largest variant of the Boeing 737 NG line. It was introduced to fill the range and passenger capacity gap in Boeing's product offerings after the 757-200 was discontinued, address the shortcomings of the 737-900, and to directly compete with the Airbus A321.

Up to two auxiliary fuel tanks in the cargo hold and standard winglets improved the range of the stretched jet to that of other 737NG variants, while an additional pair of exit doors and a flat rear pressure bulkhead increased maximum seating capacity to 220 passengers.Airlines may deactivate (plug) the additional exit doors if the total configured capacity of the plane is 189 passengers or less.

The 737-900ER was launched in July 2005 and first flew in September 2006.The first plane was delivered to its launch customer, the Indonesian low-cost airline Lion Air, on April 27, 2007, and was painted in a special dual paint scheme combining Lion Air's logo on the vertical stabilizer and Boeing's livery colors on the fuselage. A total of 505 -900ERs were delivered.

About Silk Air

SilkAir Singapore Private Limited, operating as SilkAir, was a Singaporean regional airline with its head office in Changi, Singapore. It was a wholly owned subsidiary of Singapore Airlines and in 2017, operated scheduled passenger services from Singapore to 54 cities in Southeast Asia, the Indian subcontinent, East Asia, and Northern Australia.As the regional wing of Singapore Airlines, it served the short to medium-haul destinations in the Singapore Airlines Group network.

By the end of 2021, SilkAir ceased operations, with all flights transferred to its parent company Singapore Airlines or its low-cost affiliate Scoot.