jANSPORWlON 

Before the United States Department of Transportation ^ ^' ' ^^^'^^ 'ONS 

Washington, DC '''' '^^ ' ° A !0M 1 

December 9, 2010 

Essential Air Service at: 

GLASGOW, MONTANA 

GLENDIVE, IVIONTANA 

HAVRE, MONTANA 

LEWISTOWN, MONTANA 

MILES CITY, MONTANA 

SIDNEY, MONTANA 

WOLF POINT, MONTANA 

under 49 U.S.C. 41731 et.seq. 

Docket OST-1997-2605 

This document contains the response of Great Lakes Aviation, Ltd. to Order Requesting 

Proposals 2010-11-6. 

Great Lakes Aviation, Ltd. is pleased to submit these proposals to provide essential air 

transportation to the seven Montana communities addressed in the Order as an 

inseperable package. 

We are proposing a continuation of our schedules for each community as are they 

currently published. Per the instructions in the Order, this proposal represents Great 

Lakes final and only proposal. 

All communities are assured of a minimum of 19 seat Beech 1900D airliner equipment. 

Embraer 120 Brasilia 30 seat aircraft will be provided at Great Lakes' discretion subject 

to ongoing review of seat utilization. 

The service patterns and schedule times are designed specifically to connect with our 

code-share partners (Frontier and United Airlines), along with interline connections to 

other carriers serving our Denver and Billings hubs. 

Questions and comments may be referred to: 

Michael O. Matthews 

Vice President & Chief Financial Officer 

Great Lakes Aviation, Ltd. 

1022 Airport Parkway 

Cheyenne, WY 82001 

(307) 432-7000 
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