Singapore Airlines regional affiliate SilkAir, which has an all-Airbus fleet, has moved in a different direction with a letter-of-intent (LOI) to purchase 23 Boeing 737-800s and 31 737 MAX aircraft valued at $4.9 billion at list prices.

El Al Israel Airlines has finalized an order for two additional Boeing 737-900ERs, adding to a previously announced order in March 2011, bringing its total order of the type to six.

SkyWest Inc., the parent of St. George, Utah-based SkyWest Airlines and Atlanta-based ExpressJet Airlines, said it has “reached an understanding” with Delta Air Lines (DL) enabling it to take delivery 34 Bombardier CRJ700s/900s while removing 66 older CRJ200s from its fleet.

Air Berlin (AB) will equip the 14 Airbus A320/A321 aircraft it has on order with Sharklet wing tip devices, cutting its fuel burn by up to 3.5%.

The US National Transportation Safety Board (NTSB) on Tuesday said it has decided to conduct an investigation into the GE Aviation GEnx engine failure that occurred on a Boeing 787 during a taxi test at Charleston Airport in South Carolina July 28, prompting a small grass fire.

Venezuela’s Conviasa Airlines (VO) has agreed to purchase six Embraer E-190 jets. The deal also includes 14 options.

Philippine-based airline Cebu Pacific (5J) will sell its entire Airbus A319 fleet of 10 aircraft to Las Vegas, Nev.-based Allegiant Travel Co., according to a statement made to the Philippine Stock Exchange.

Las Vegas, Nev.-based Allegiant Air, the low-cost carrier owned by Allegiant Travel Co., said it will lease 19 used Airbus A319s to begin entering its fleet in the 2013 second quarter.