continue to operate those routes until a new airline could be awarded the contract, a process expected to be completed within 90 days. On August 30, 2017, PenAir announced it would cease all Denver operations effective after September 10, 2017 due to a mass resignation involving 17 crew members. On November 30, 2017, PenAir announced it would end its service to Crescent City, California as of December 15. The city has chosen Contour Airlines to operate the Essential Air Service route, but PenAir stated it would be unable to continue the service until Contour begins operating. On May 30, 2018, PenAir cancelled service via Boston to and from Plattsburgh, Bar Harbor and Presque Isle a month early, citing staffing issues, breaking their Essential Air Services contract with the Department of Transportation. On June 1, 2019, PenAir ceased direct ticket sales under its own brand. From that day, all PenAir flights are marketed and sold using Ravn Alaska (7H) flight numbers. Fleet the PenAir fleet consisted of the following aircraft: PenAir was the only air carrier in the U.S. operating the Saab 2000 regional turboprop in scheduled passenger airline service. PenAir was among the last airlines in the world to operate the Grumman G-21A Goose seaplane on scheduled flights. This piston-powered amphibious aircraft was used to resupply remote coastal locations where no land-based airstrip existed. On December 21, 2012, the Grumman Goose made its final commercial flight from Unalaska to Anchorage. PenAir also previously operated another piston-powered amphibious aircraft type being the Grumman G-44 Widgeon. The airline also previously operated several turboprop-powered aircraft types including the Cessna 208B Grand Caravan, Cessna 441 Conquest, as well as the Metro II, Metro III and Metro 23 variants of the Fairchild Swearingen Metroliner. Previously operated piston-powered landplane aircraft included the Piper Navajo Chieftain and Piper Saratoga. According to the July 1, 2016 Alaska Airlines system timetable, PenAir was then operating all of its code sharing flights in the state of Alaska on behalf of Alaska Airlines with Saab 340B and Saab 2000 turboprop aircraft. The Saab 2000 is a larger, high-speed version of the Saab 340B. All Alaska Airlines code sharing flights in the lower 48 states in the U.S. were operated by PenAir with the Saab 340B. Destinations Using Ted Stevens Anchorage International Airport as an operating base, PenAir operated scheduled service to the following destinations in Alaska as of June 2019. Anchorage