Document:

<PAGE>
                                                                  Order 2002-8-1

[DEPARTMENT OF TRANSPORTATION LOGO]                       Served: August 7, 2002

                            UNITED STATES OF AMERICA
                          DEPARTMENT OF TRANSPORTATION
                            OFFICE OF THE SECRETARY
                                WASHINGTON, D.C.

                   Issued by the Department of Transportation
                         on the 2nd day of August, 2002

Essential Air Service at
      EPHRATA/MOSES LAKE, WASHINGTON                    DOCKET OST-1998-3344-7
under 49 U.S.C.41731 et seq.

                       ORDER SETTING FINAL SUBSIDY RATES

SUMMARY
By this order, the Department is setting final subsidy rates for Big Sky
Aviation (Big Sky), to provide essential air service (EAS) at Ephrata/Moses
Lake, Washington, at annual subsidy rates of $1,132,911 for the period October
1, 2001, through November 30, 2002, and $895,986 for the period December 1,
2002, through July 31, 2003.

BACKGROUND
By Order 2001-6-22, June 25, 2001, the Department selected Big Sky to provide
essential air service at Ephrata/Moses Lake, through July 31, 2003, at an annual
subsidy rate of $479,702, to provide three nonstop round trips each weekday and
each weekend to Seattle, using 19-seat Metro III or Metro 23 aircraft.

The terrorist attacks of September 11 changed the aviation industry in many
ways. In the case of carriers that provide subsidized EAS, they are paid on a
pre-agreed, fixed fee-per-flight basis, with no built-in triggers. Since
September 11, carriers' expenses are significantly higher and revenues are down,
meaning that the carriers have incurred substantial losses to the point of
jeopardizing service to small, rural communities across the country. As a
result, the Department issued Order 2002-2-13, February 15, 2002, authorizing
emergency subsidy to carriers, effective retroactive to October 1, 2001, through
the end of the normal contract period.(1) That order granted immediate rate
relief to carriers in order to get them much-needed cash as soon as possible,
and also stated our intention of renegotiating all essential air service
contracts, retroactive to October 1. In response to that order, Big Sky
submitted a proposal for Ephrata/Moses Lake based on post-September 11 operating
results.

After reviewing Big Sky's proposal, the carrier and staff have agreed on new
final rates for the carrier to continue to provide Ephrata/Moses Lake with
three nonstop round trips a day to Seattle with 19-seat Metro aircraft. As
appears to be common in the industry, Big Sky suffered its worst

-------------------------
 (1) See Order 2002-2-13 for a full discussion.

<PAGE>

                                      -2-

losses shortly after the September 11 attacks, and we would expect traffic and
revenues to be rebounding. Thus, we have agreed to a two-tiered rate for Big
Sky: the first from October 1, 2001, through November 30, 2002, at an annual
rate of $1,132,911, and an annual rate of $895,986 from December 1, 2002,
through July 31, 2003. The vast majority of the dramatic increase in subsidy is
driven by the reduction in passenger revenue with some offsetting reductions in
passenger-related expenses. Increased liability and hull insurance costs
represent a considerable increase in expenses.

This order is issued under authority delegated in 49 CFR 1.56a(f).

ACCORDINGLY,
1. The Department sets final rates of compensation for Big Sky Aviation, Ltd.,
for the provision of essential air service at Ephrata/Moses Lake, Washington, as
described in Appendix C, for the period from October 1, 2001, through July 31
2003, payable as follows: for each calendar month during which essential air
service is provided, the amount of compensation shall be subject to the weekly
ceiling set forth in Appendix C, and shall be determined by multiplying the
subsidy-eligible arrivals and departures flown during the month by $623.85 for
the period October 1, 2001, through November 30, 2002, and by $493.38 for the
period December 1, 2002, through July 31, 2003;(2)

2. These rates are in lieu of, and not in addition to, those set by Orders
2001-6-22, or 2002-2-13;

3. We direct Big Sky Aviation, Ltd., to retain all books, records, and other
source and summary documentation to support claims for payment and to preserve
and maintain such documentation in a manner that readily permits the audit and
examination thereof by representatives of the Department. Such documentation
shall be retained for seven years or until the Department indicates that the
records may be destroyed. Copies of flight logs for aircraft sold or disposed of
must be retained. The carrier may forfeit its compensation for any claim that is
not supported under the terms of this order; and

4. The Department will serve a copy of this order on the Mayors of Moses Lake
and Ephrata and the airport manager of Moses Lake, the Governor of Washington,
and Big Sky Aviation, Ltd.

By:

                                              READ C. VAN DE WATER
                                         Assistant Secretary for Aviation
                                            and International Affairs

(SEAL)

   An electronic version of this document is available on the World Wide Web
                             at http://dms.dot.gov

------------------
(2) See Appendix B for the calculation of these rates, which assumes the use of
the aircraft designated. If the carrier reports a significant number of aircraft
substitutions, a revision of these rates may be required,

<PAGE>

                                                                      Appendix A

                               MAP OF WASHINGTON

                                   [GRAPHIC]

<PAGE>

                                                                      Appendix B
                                                                     Page 1 of 2

                                BIG SKY AIRLINES
                  POST 9/11 CALCULATION OF SUBSIDY REQUIREMENT
                        AT EPHRATA/MOSES LAKE, WASHINGTON
                   OCTOBER 1, 2001, THROUGH NOVEMBER 30, 2002
<TABLE>
<CAPTION>

                                                                               Subsidy Per                       9/11 Adjusted
                                                                             Selection Order     Adjustment         Subsidy
                                                                                2001-6-22         for 9/11        Requirement
                                                                                ---------         --------        -----------
<S>                                                                         <C>               <C>               <C>
Route: MWH - SEA
Revenue block hours                                                                 1,589                               1,589
Nonrevenue block hours                                                                 60                                  60
TOTAL BLOCK HOURS                                                                   1,649                               1,649

Frequency: 18 round trips per week - Annual Departures                              1,816                               1,816

PASSENGER REVENUE                Distance   Fare   Passengers    RPM's
                                 --------   ----   ----------    -----
MWH-SEA                            141     $69.50    18,000    2,538,000       $1,251,000       ($561,000)(A)     $   690,000
Freight                                                                        $   25,020        ($25,020)(B)     $         0
TOTAL OPERATING REVENUE                                                        $1,276,020                         $   690,000
                                                   Unit cost
DIRECT OPERATING EXPENSE (METRO III OR 23)         ---------
Flying Operations                                   $124.50     per BH         $  205,301                         $   205,301
Aircraft Lease                                      $163.71     per BH         $  269,958                         $   269,958
Fuel & Oil                                          $131.56     per BH         $  216,942                         $   216,942
Maintenance                                         $159.66     per BH         $  263,279                         $   263,279
Maintenance Burden                                                             $   65,829                         $    65,829
Hull Insurance                                      $ 22.19     per BH         $   36,591        $ 44,507 (C)     $    81,098
Property Tax on Aircraft                                                       $   16,800                         $    16,800
                                                                               ----------                         -----------
TOTAL DIRECT OPERATING EXPENSE                                                 $1,074,700                         $ 1,119,207

INDIRECT OPERATING EXPENSE
Advertising                                                                    $    5,000                         $     5,000
Departure Related Costs                                                        $  260,400                         $   260,400
Traffic Related Costs                                                          $  193,500        ($23,000)(D)     $   170,500
Capacity Related Costs                                                         $  122,016        $ 42,482 (E)     $   164,498
                                                                               ----------                         -----------
TOTAL INDIRECT OPERATING EXPENSE                                               $  580,916                         $   600,398

TOTAL OPERATING EXPENSE                                                        $1,655,616                         $ 1,719,605
Operating Loss                                                                 $  379,596                         $ 1,029,605
Interest                                                                       $   17,325                         $    17,325
Profit element @ 5 percent of TOE                                              $   82,781                         $    85,980

COMPENSATION REQUIREMENT                                                       $  479,702                         $ 1,132,911

INTERIM RATE INCREASE 2/02                                                                        $375,300

ADDITIONAL COMPENSATION PER NEW RATE                                                              $277,908
</TABLE>

Footnotes:
(A)-Annual passenger forecast adjusted to 11,500 annually at actual average
    fare of $60.00 based on post- September 11 results.
(B)-Freight programs terminated post 9/11 due to cost prohibitive impact of
    new security measures, and termination of cargo program by contract handling
    agent in SEA.
(C)-Increased Hull insurance coverage premium effective January 1, 2002.
(D)-New war risk coverage premium of $1.25 per passenger increased cost by
    $14,375 (11,500 X $1.25), offset by reduction in passengers (6,500) from
    original contract award at $5.75 direct expense per passenger ($37,375).
(E)-Increased Liability insurance coverage premium effective January 1, 2002.

<PAGE>

                                                                      Appendix B
                                                                     Page 2 of 2
                                BIG SKY AIRLINES
                  POST 9/11 CALCULATION OF SUBSIDY REQUIREMENT
                       AT EPHRATA/MOSES LAKE, WASHINGTON
                    DECEMBER 1, 2002, THROUGH JULY 31, 2003

<TABLE>
<CAPTION>
                                                                               Subsidy Per                       9/11 Adjusted
                                                                             Selection Order     Adjustment         Subsidy
                                                                                2001-6-22         for 9/11        Requirement
                                                                                ---------         --------        -----------
<S>                                                                         <C>               <C>               <C>
Route: MWH - SEA
Revenue block hours                                                                 1,589                               1,589
Nonrevenue block hours                                                                 60                                  60
TOTAL BLOCK HOURS                                                                   1,649                               1,649

Frequency: 18 round trips per week - Annual Departures                              1,816                               1,816

PASSENGER REVENUE                Distance   FARE   Passengers    RPM's
                                 --------   ----   ----------    -----
MWH-SEA                            141     $69.50    18,000    2,538,000       $1,251,000       ($291,000)(A)     $   960,000
Freight                                                                        $   25,020        ($25,020)(B)     $         0
TOTAL OPERATING REVENUE                            Unit cost                   $1,276,020                         $   960,000
DIRECT OPERATING EXPENSE (METRO III OR 23)         ---------
Flying Operations                                   $124.50     per BH         $  205,301                         $   205,301
Aircraft Lease                                      $163.71     per BH         $  269,958                         $   269,958
Fuel & Oil                                          $131.56     per BH         $  216,942                         $   216,942
Maintenance                                         $159.66     per BH         $  263,279                         $   263,279
Maintenance Burden                                                             $   65,829                         $    65,829
Hull Insurance                                      $ 22.19     per BH         $   36,591        $ 44,507 (C)     $    81,098
Property Tax on Aircraft                                                       $   16,800                         $    16,800
                                                                               ----------                         -----------
TOTAL DIRECT OPERATING EXPENSE                                                 $1,074,700                         $ 1,119,207

INDIRECT OPERATING EXPENSE
Advertising                                                                    $    5,000                         $     5,000
Departure Related Costs                                                        $  260,400                         $   260,400
Traffic Related Costs                                                          $  193,500         ($8,500)(D)     $   202,000
Capacity Related Costs                                                         $  122,016        $ 42,482 (E)     $   164,498
                                                                               ----------                         -----------
TOTAL INDIRECT OPERATING EXPENSE                                               $  580,916                         $   631,898

TOTAL OPERATING EXPENSE                                                        $1,655,616                         $ 1,751,105
Operating Loss                                                                 $  379,596                         $   791,105
Interest                                                                       $   17,325                         $    17,325
Profit element @ 5 percent of TOE                                              $   82,781                         $    87,555

COMPENSATION REQUIREMENT                                                       $  479,702                         $   895,986

INTERIM RATE INCREASE 2/02                                                                        $375,300

ADDITIONAL COMPENSATION PER NEW RATE                                                              $ 40,983
</TABLE>

Footnotes:
(A)-Annual passenger forecast adjusted to 16,000 annually at actual average fare
    of $60.00 based on post September 11 results.
(B)-Freight programs terminated post 9/11 due to cost prohibitive impact of new
    security measures, and termination of cargo program by contract handling
    agent in SEA.
(C)-Increased Hull insurance coverage premium effective January 1, 2002.
(D)-New war risk coverage premium of $1.25 per passenger increased cost by
    $20,000 (16,000 X $1.25), offset by reduction in passengers (2,000) from
    original contract award at $5.75 direct expense per passenger ($11,500).
(E)-Increased Liability insurance coverage premium effective January 1, 2002.

<PAGE>

                                                                      Appendix C
                                                                     Page 1 of 3

                                BIG SKY AIRLINES
                    ESSENTIAL AIR SERVICE TO BE PROVIDED AT
                         EPHRATA/MOSES LAKE, WASHINGTON

Effective Period:         October 1, 2001, through November 30, 2002

Service:                  Eighteen nonstop round trips each week to Seattle

Aircraft:                 Fairchild Metro III or Metro 23 aircraft (19
                          passenger seats)

Timing of Flights:        Flights must be well timed and well spaced to ensure
                          full compensation.

Subsidy Rate:             Per year - $1,132,911
                          Per arrival from or departure to Seattle - $623.85(1)
Weekly
Compensation Ceiling:     $22,458.60(2)

--------------------
(1) Annual compensation of $1,132,911, divided by the number of arrivals and
departures estimated to be performed annually (1,816), calculated by multiplying
36 arrivals and departures each week x 52 weeks x 97 percent completion.
(2) The subsidy rate for each arrival/departure ($623.85) multiplied by the
number of scheduled subsidy-eligible flights per week (36).

<PAGE>
                                                                      Appendix C
                                                                     Page 2 of 3

                                BIG SKY AIRLINES
                    ESSENTIAL AIR SERVICE TO BE PROVIDED AT
                         EPHRATA/MOSES LAKE, WASHINGTON

Effective Period:      December 1, 2001, through July 31, 2003

Service:               Eighteen nonstop round trips each week to Seattle

Aircraft:              Fairchild Metro III or Metro 23 aircraft (19 passenger
                       seats)

Timing of Flights:     Flights must be well timed and well spaced to ensure
                       full compensation

Subsidy Rate:          Per year - $895,986
                       Per arrival from or departure to Seattle - $493.38(1)

Weekly
Compensation Ceiling:       $17,761.68(2)

---------------------
(1) Annual compensation of $895,986, divided by the number of arrivals and
departures estimated to be performed annually (1,816), calculated by multiplying
36 arrivals and departures each week x 52 weeks x 97 percent completion.

(2) The subsidy rate for each arrival/departure ($493.38) multiplied by the
number of scheduled subsidy-eligible flights per week (36).

<PAGE>

                                                                      Appendix C
                                                                     Page 3 of 3

NOTE
----

The carrier understands that it may forfeit its compensation for any flights
that it does not operate in conformance with the terms and stipulations of the
rate order, including the service plan outlined in the order and any other
significant elements of the required service, without prior approval. The
carrier understands that an aircraft take-off and landing at its scheduled
destination constitutes a completed flight; absent an explanation supporting
subsidy eligibility for a flight that has not been completed, such as certain
weather cancellations, only completed flights are considered eligible for
subsidy. In addition, if the carrier does not schedule or operate its flights in
full conformance with this order for a significant period, it may jeopardize its
entire subsidy claim for the period in question. If the carrier contemplates any
such changes beyond the scope of the order during the applicable period of this
rate, it must first notify the Office of Aviation Analysis in writing and
receive written approval from the Department to be assured of full compensation.
Should circumstances warrant, the Department may locate and select a replacement
carrier to provide service on this route. The carrier must complete all flights
that can be safely operated; flights that overfly points for lack of traffic
will not be compensated. In determining whether subsidy payment for a deviating
flight should be adjusted or disallowed, the Department will consider the extent
to which the goals of the program are met and the extent of access to the
national air transportation system provided to the community.

If the Department unilaterally, either partially or completely, terminates or
reduces payments for service or changes service requirements at a specific
location provided for under this order, then, at the end of the period for which
the Department does make payments in the agreed amounts or at the agreed service
levels, the carrier may cease to provide service to that specific location
without regard to any requirement for notice of such cessation. Those
adjustments in the levels of subsidy and/or service that are mutually agreed to
in writing by the parties to the agreement do not constitute a total or partial
reduction or cessation of payment.

Subsidy contracts are subject to, and incorporate by reference, relevant
statutes and Department regulations, as they may be amended from time to time.
However, any such statutes, regulations, or amendments thereto shall not operate
to controvert the foregoing paragraph.<PAGE>
                                                                  Order 2002-7-2

[DEPARTMENT OF TRANSPORTATION LOGO]                         Served: July 5, 2002

                            UNITED STATES OF AMERICA
                          DEPARTMENT OF TRANSPORTATION
                            OFFICE OF THE SECRETARY
                               WASHINGTON, D.C.

                  Issued by the Department of Transportation
                          on the 1st day of July, 2002

Essential air service at

EL DORADO/CAMDEN, ARKANSAS                             Docket OST-1997-2935 - 64
JONESBORO, ARKANSAS
HARRISON, ARKANSAS
HOT SPRINGS, ARKANSAS
ENID, OKLAHOMA                                         Docket OST-1 997-2401
PONCA CITY, OKLAHOMA
BROWNWOOD, TEXAS                                       Docket OST-1 997-2402

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

                            ORDER SELECTING CARRIER
                      AND ESTABLISHING FINAL SUBSIDY RATES

SUMMARY
By this order, the Department is selecting Air Midwest, Inc., to provide
essential air service at the seven communities named above for a two-year period
at subsidy rates totaling $6,693,881 annually.

BACKGROUND
By Order 2002-2-9, February 11, 2002, the Department tentatively reselected Big
Sky to provide subsidized service at seven communities in Arkansas, Oklahoma and
Texas for the two-year period beginning December 1, 2001, at annualized subsidy
rates totaling $8,146,535 during the first 6 months and $7,781,317 during the
remaining 18 months. Under the terms of that order, Big Sky was authorized to
continue providing the following services with 19-seat Metro 111 or Metro 23
aircraft: 12 Jonesboro-El Dorad/Camden-Dallas/Ft. Worth and 6 El Dorado/Camden-
Dallas/Ft. Worth round trips a week; 18 Harrison-Hot Springs-Dallas/Ft. Worth
round trips a week; 17 Enid-Ponca City-Dallas/Ft. Worth and 7 Enid-Ponca
City-Denver round trips a week; and 18 Brownwood-Dallas/Ft. Worth round trips a
week.(1)

---------
(1) See Appendix A for a map. In tentatively reselecting Big Sky, the Department
continued to authorize two modifications in the communities' services that had
been approved during the previous rate period. First, in February 2000 the
Department allowed Big Sky to operate some of Enid's and Ponca City's service to
Denver rather than Dallas/Ft. Worth. Second, in September 2001 the Department
allowed Big Sky to discontinue Harrison's service to St. Louis in exchange for
increased service to

<PAGE>

                                      -2-

Consistent with normal program policy, Order 2002-2-9 also provided for
objections to our tentative decision, and invited competing proposals from other
carriers interested in providing service at the communities, with or without
subsidy requests.

CARRIER PROPOSALS
Three carriers have submitted proposals: Big Sky, Corporate Airlines, Inc., and
a late-filed proposal from Mesa Air Group, Inc., on behalf of its subsidiary Air
Midwest, Inc.(2) We will here describe the proposals in broad terms; they are
also summarized in Appendix B.

Big Sky's proposal reflects the same service patterns and levels as those
tentatively selected in Order 2002-2-9, at the same subsidy rates, which total
roughly $7.8 million annually.

Mesa proposes the same service patterns and levels as Big Sky, operated with
19-seat Beech 1900 aircraft rather than Metros, at subsidy rates totaling about
$6.7 million annually.

Corporate's proposal contains several options covering service at five of the
seven communities, which the carrier would operate with 19-seat Jetstream 32
aircraft; however, Corporate's proposal does not contemplate service at Enid or
Brownwood. Under Option A, Corporate would operate 18 nonstop round trips a week
to Memphis from the four Arkansas communities -- El Dorado/Camden, Harrison, Hot
Springs and Jonesboro -- and 18 nonstop round trips a week from Ponca City to
Kansas City, at subsidy rates totaling about $7.8 million a year. Under Option
B, the four Arkansas communities' services would consist of 12 round trips a
week rather than 18, with Ponca City's service remaining at 18 round trips a
week, at subsidy rates totaling about $6.9 million a year.

Corporate's proposal contains two further options for Jonesboro that contemplate
service to St. Louis rather than Memphis. Under Option C, Corporate would
operate 18 nonstop round trips a week from Jonesboro to St. Louis at an annual
subsidy rate of about $1.7 million. Corporate's total annual subsidy for all
five communities, with Option C for Jonesboro, would be either $8.4 million with
Option A for the other four communities, or $7.5 million with Option B for the
other four communities. And finally, under Option D, Corporate would operate 12
nonstop round trips a week from Jonesboro to St. Louis at an annual subsidy rate
of about $1.3 million. The total annual subsidy for all five communities, with
Option D for Jonesboro, would be either $8.0 million with Option A for the other
four communities, or $7.1 million with Option B for the other four communities.

The total subsidy for Corporate's proposal thus ranges from $6.9 to $8.4 million
a year for five communities, depending on the particular options involved. Under
any of Corporate's options,

--------------------------------------------------------------------------------
Dallas/Ft. Worth. The modifications were supported by the communities and
reduced the carrier's subsidy requirement.
(2) Mesa did not submit a complete proposal on behalf of Air Midwest until
several days after the due date of March 6. As a matter of longstanding policy,
we accept late proposals to the extent practical, though we accord them less
weight than proposals that are timely filed.

<PAGE>

                                      -3-

the Department would need to subsidize another carrier at Enid and Brownwood at
additional cost.

COMMUNITY COMMENTS
All seven communities have submitted comments on the carriers' proposals. Five
of the communities support Air Midwest, although the City of Camden stipulates
that at least one round trip a day should serve Camden's Harrell Field rather
than El Dorado's Goodwin Field. The City of Jonesboro states that its first
choices are either of Corporate's options proposing service to St. Louis,
followed by Air Midwest's proposal. The City of Ponca City expresses some
concerns about both Big Sky and Air Midwest, has no comments regarding
Corporate, and indicates no preference at all.

DECISION
After reviewing the carrier proposals and community comments, we have decided to
select Air Midwest to provide subsidized service at all seven communities for a
two-year period, at annual subsidy rates totaling $6,693,881.(3) Although Air
Midwest's proposal was filed late and therefore carries less weight than the
other two, the factors in its favor are sufficiently compelling to merit our
selection of it.

Under 49 U.S.C. 41733(c), we are required to consider, among other things, the
applicants' operating experience, their marketing arrangements to ensure service
beyond the hub, and the communities' views. All three carriers have considerable
experience in scheduled service, and no strong distinction can be made on that
score. On the other hand, a strong majority of the communities favor the
selection of Air Midwest.

We have also traditionally given considerable weight to the amount of subsidy
required by each applicant. In this regard, Air Midwest's proposal again stands
foremost. Air Midwest proposes services identical to those already authorized
for the incumbent, Big Sky, but would require about $1.1 million a year less
subsidy than Big Sky. The difference in subsidy requirements between Air Midwest
and Corporate is even greater. Corporate's least expensive service package,
Option B, is nearly $170,000 a year above Air Midwest's proposal, but does not
reflect the additional subsidy that would be required in our selecting another
carrier to serve Enid and Brownwood, which are not included in Corporate's
proposal at all. Moreover, Corporate's Option B would provide El Dorado/Camden,
Harrison and Hot Springs with less service than Air Midwest's proposal -- 12
round trips a week rather than 18.(4)

The Jonesboro community has expressed a preference for Corporate's proposed
service to St. Louis. And in fact, the strongest elements of Corporate's
proposal are its Jonesboro-St. Louis options, where its marketing alliance with
American Airlines, Inc., would enable it to operate as an American Connection
carrier and thus provide travelers to/from Jonesboro with on-line

--------------------
(3) See Appendix C for details of Air Midwest's compensation requirements.
(4) Corporate's Option A would provide those communities with 18 round trips a
day, but would cost $1.1 million a year more than Mesa's proposal and we would
still need to subsidize another carrier at Enid and Brownwood.

<PAGE>

                                      -4-

connecting services at St. Louis, an American Airlines hub. However, we conclude
that this advantage is outweighed by the much greater subsidy involved. Air
Midwest proposes serving El Dorado/Camden and Jonesboro together on a single
route to Dallas/Ft. Worth at a subsidy of about $1.8 million a year. In
comparison, Corporate's Option D requires about $1.3 million a year to operate
nonstop, turnaround service between Jonesboro and St. Louis.(5) If we were to
select Corporate at Jonesboro, however, we would still need to select a carrier
to operate nonstop, turnaround service between El Dorado/Camden and Dallas/Ft.
Worth. We estimate that selecting Air Midwest to serve El Dorado/Camden in such
a fashion would require subsidy of approximately $1.3 million annually.(6)
Consequently, the combined subsidy necessary to support Corporate at Jonesboro
and another carrier at El Dorado/Camden would be at least $2.6 million a year --
$800,000 more than Air Midwest requires to serve both communities on a single
route.

Similarly, selecting Air Midwest to serve Enid and either Big Sky or Corporate
to serve Ponca City would be considerably more expensive than selecting Air
Midwest to serve the two communities together. And in this case, Ponca City has
expressed no preference among the carriers.

We understand the City of Camden's desire for scheduled service at Harrell Field
rather than El Dorado's Goodwin Field, about 30 miles away. However, El Dorado
and Camden are certificated as a single, hyphenated community, and service at
either one of the airports satisfies its essential air service requirements.(7)
Under the circumstances, we have no statutory authority to direct a carrier to
serve one airport or the other, or some combination of the two. Such service
decisions are instead a matter of carrier discretion, and we would encourage the
two cities to work with the carrier toward a satisfactory arrangement.

CARRIER TRANSITION
Mesa has informed us that Air Midwest will be able to inaugurate service at
the communities about 60 to 90 days following our decision here, at which time
we will end our reliance on Big Sky to provide essential air service at the
communities. We expect Air Midwest and Big Sky to coordinate the transition in
essential air service responsibilities; our staff is prepared to assist in that
effort. In particular, we expect Big Sky to contact all travelers holding
reservations for flights that it intends to suspend, to inform them of the
suspension and the availability of Air Midwest's service, and to assist them in
arranging alternate transportation.

CARRIER FITNESS
49 U.S.C.41737(b) and 41738 require that we find an air carrier fit, willing and
able to provide reliable service before we compensate it for providing essential
air service. We last found Air Midwest fit by Order 2002-3-29, March 29, 2002,
in connection with its essential air service

------------------
(5) We are here comparing Air Midwest's proposal with Corporate's Option D
because both involve 12 round trips a week. Corporate's Option C would involves
18 round trips a week, but of course would require even more subsidy -- nearly
$1.7 million annually.
(6) Based on the data in Air Midwest's proposal. Big Sky's and Corporate's
subsidy requirements for serving El Dorado/Camden alone with as many flights as
Air Midwest would be even higher.
(7) We previously addressed this issue in Order 95-1-45, January 27, 1995.

<PAGE>

                                      -5-

at four communities in western Kansas. Since then, the Department has routinely
monitored the carrier's continuing fitness, and no information has come to our
attention that would lead us to question its ability to operate in a reliable
manner. Based on our review of its most recent submissions, we find that Air
Midwest continues to have available adequate financial and managerial resources
to provide quality service at the communities at issue here, and that it
continues to possess a favorable compliance disposition. The Federal Aviation
Administration has advised us that the carrier is conducting its operations in
accordance with 14 CFR Part 121, and knows of no reason why we should not find
that Air Midwest remains fit.

This order is issued under authority delegated in 49 CFR 1.56a(f).

ACCORDINGLY,
1. We select Air Midwest, Inc., to provide essential air service at El
Dorado/Camden, Jonesboro, Harrison and Hot Springs, Arkansas, Enid and Ponca
City, Oklahoma, and Brownwood, Texas, as described in Appendix D, from the date
on which the carrier begins service through the 24th month following the
commencement of service;

2. We set the final rates of compensation for Air Midwest, Inc., for the
provision of essential air service at El Dorado/Camden, Jonesboro, Harrison and
Hot Springs, Arkansas, Enid and Ponca City, Oklahoma, and Brownwood, Texas, as
described in Appendix D, from the date on which the carrier begins service
through the 24th month following the commencement of service, payable as
follows: for each month during which essential air service is provided, the
amount of compensation shall be subject to the weekly ceilings set forth in
Appendix D, and shall be determined by multiplying the subsidy-eligible arrivals
and departures completed during the month by the following amounts:(8)

<TABLE>
<CAPTION>

<S>                                        <C>
           El Dorado/Camden and Jonesboro  $587.50
           Harrison and Hot Springs        $538.97
           Enid and Ponca City             $399.55
           Brownwood                       $525.71
</TABLE>

3. We direct Air Midwest, Inc., to retain all books, records, and other source
and summary documentation to support claims for payment, and to preserve and
maintain such documentation in a manner that readily permits its audit and
examination by representatives of the Department. Such documentation shall be
retained for seven years or until the Department indicates that the records may
be destroyed. Copies of flight logs for aircraft sold or disposed of must be
retained. The carrier may forfeit its compensation for any claim that is not
supported under the terms of this order;

4. We find that Air Midwest, Inc., continues to be fit, willing and able to
operate as a commuter air carrier and capable of providing reliable essential
air service at El Dorado/Camden,

----------------
(8) See Appendix D for the calculation of these rates, which assume the use of
the aircraft designated. I f the carrier reports a significant number of
aircraft substitutions, revision of these rates may be required.

<PAGE>

                                      -6-

Jonesboro, Harrison and Hot Springs, Arkansas, Enid and Ponca City, Oklahoma,
and Brownwood, Texas;

5. These dockets will remain open until further order of the Department; and

6. We will serve copies of this order on the mayors and airport managers of El
Dorado/Camden, Jonesboro, Harrison and Hot Springs, Arkansas, Enid and Ponca
City, Oklahoma, and Brownwood, Texas; Air Midwest, Inc.; Big Sky Transportation
Co., d/b/a Big Sky Airlines; and Corporate Airlines, Inc.

By:

                                                READ C. VAN DE WATER
                                          Assistant Secretary for Aviation
(SEAL)                                         and International Affairs

                An electronic version of this document is available
                    on the World Wide Web at http://dms.dot.gov

<PAGE>

                                                                      APPENDIX A

                                      MAP

                                   [GRAPHIC]

<PAGE>

                                                                      APPENDIX B
                                                                     Page 1 of 2

                          SUMMARY OF CARRIER PROPOSALS

                                BIG SKY AIRLINES

Big Sky's proposed service remains the Same as presented in Order 2002-2-9,
operated with 19-seat Metro III or Metro 23 aircraft:
    12 round trips a week from El Dorado/Camden and Jonesboro to Dallas/Ft.
Worth, plus another 6 from El Dorado/Camden Only;
    18 round trips a week from Harrison and Hot Springs to Dallas/Ft. Worth;
    17 round trips a week from Enid and Ponca City to Dallas/Ft. Worth, plus
another 7 from both communities to Denver; and
    18 round trips a week from Brownwood to Dallas/Ft. Worth.

<TABLE>
<CAPTION>

                                                                                           Subsidy
                               Annual Passengers  Annual Revenues    Annual Expenses    With 5% Profit

<S>                            <C>                <C>                <C>                <C>
El Dorado/Camden
   and Jonesboro                      7,690         $  669,115         $2,560,171         $2,037,361
Harrison and Hot Springs             10,530            726,634          2,808,213          2,242,821
Enid and Ponca City                  15,870          1,368,045          3,556,254          2,387,830
Brownwood                             4,280            159,944          1,202,680          1,113,305

<CAPTION>

7-Community Totals
                                                                                           Subsidy
                               Annual Passengers  Annual Revenues    Annual Expenses    With 5% Profit

<S>                            <C>                <C>                <C>                <C>
                                     38,370         $2,923,738        $10,127,318         $7,781,317

</TABLE>

                                MESA/AIR MIDWEST

Mesa proposes the same service patterns and frequencies as Big Sky, but would
use 19-seat Beech 1900 aircraft.

<TABLE>
<CAPTION>

                                                                                           Subsidy
                               Annual Passengers  Annual Revenues   Annual Expenses    With 5% Profit

<S>                            <C>                <C>               <C>                <C>
El Dorado/Camden
   and Jonesboro                     12,071         $1,136,926         $2,793,801         $1,796,565
Harrison and Hot Springs             12,396            863,477          2,706,202          1,978,036
Enid and Ponca City                  18,687          1,685,239          3,466,516          1,954,603
Brownwood                             5,800            216,746          1,125,165            964,677

<CAPTION>

7-Community Totals
                                                                                           Subsidy
                               Annual Passengers  Annual Revenues    Annual Expenses    With 5% Profit
<S>                            <C>                <C>                <C>                <C>
                                     48,954         $3,902,388       $10,091,684          $6,693,881
</TABLE>

<PAGE>

                                                                      APPENDIX B
                                                                     Page 2 of 2

                               CORPORATE AIRLINES

Option A: 18 nonstop round trips a week from each community to Memphis (except
to Kansas City for Ponca City) with 19-seat Jetstream 32 aircraft. Corporate
did not submit any proposals for Enid or Brownwood.

<TABLE>
<CAPTION>

                                                                                   Subsidy
                      Annual Passengers   Annual Revenues    Annual Expenses    With 5% Profit

<S>                   <C>                 <C>                <C>                <C>
El Dorado/Camden             10,836         $  816,764         $2,362,586         $1,663,951
Harrison                     10,836            816,764          2,336,313          1,636,365
Hot Springs                  10,836            762,313          2,261,312          1,612,065
Jonesboro                    10,836            598,960          1,625,129          1,107,425
Ponca City                    9,030            771,388          2,459,988          1,811,599
</Table>

Option B: 12 nonstop round trips a week from each community to Memphis with
19-seat Jetstream 32 aircraft. For this option, Corporate did not submit a
12-round-trip proposal for Ponca City.

<Table>
<CAPTION>
                                                                                   Subsidy
                      Annual Passengers   Annual Revenues    Annual Expenses    With 5% Profit

<S>                   <C>                 <C>                <C>                <C>
El Dorado/Camden              7,224         $  544,509         $1,820,603         $1,367,124
Harrison                      7,224            544,509          1,807,527          1,353,394
Hot Springs                   7,224            508,208          1,753,953          1,333,443
Jonesboro                     7,224            399,307          1,328,610            995,734
Ponca City (as in Option A)   9,030            771,388          2,459,988          1,811,599
</Table>

Option C for Jonesboro only: 18 nonstop round trips a week to St. Louis with
19-seat Jetstream 32 aircraft.

<Table>
<CAPTION>

                                                                                   Subsidy
                      Annual Passengers   Annual Revenues    Annual Expenses    With 5% Profit
<S>                   <C>                 <C>                <C>                <C>
Jonesboro                   12,642          $  889,365        $ 2,444,237         $1,671,084
</Table>

Option D for Jonesboro only: 12 nonstop round trips a week to St. Louis with
19-seat Jetstream 32 aircraft.

<Table>
<CAPTION>
                                                                                   Subsidy
                      Annual Passengers   Annual Revenues    Annual Expenses    With 5% Profit
<S>                   <C>                 <C>                <C>                <C>
Jonesboro                     8,428         $  592,910         $1,809,523         $1,307,989
</Table>

<Table>
<CAPTION>

5-Community Totals
                                                                                   Subsidy
                      Annual Passengers   Annual Revenues    Annual Expenses    With 5% Profit
<S>                   <C>                 <C>                <C>                <C>
Option A                     52,374        $ 3,766,189        $11,045,328        $ 7,831,405
Option B                     37,926          2,767,921          9,170,681          6,861,294
Option A with C              54,180          4,056,594         11,864,436          8,401,064
Option A with D              49,966          3,760,139         11,229,722          8,031,069
Option B with C              43,344          3,257,979         10,286,308          7,542,644
Option B with D              39,130          2,961,524          9,651,594          7,172,649

</TABLE>

<PAGE>

                                                                      APPENDIX C
                                                                     Page 1 of 3

                               AIR MIDWEST, INC.
           ANNUAL COMPENSATION REQUIREMENTS FOR ESSENTIAL AIR SERVICE
      AT EL DORADO/CAMDEN, HARRISON, HOT SPRINGS AND JONESBORO, ARKANSAS,
               ENID AND PONCA CITY, OKLAHOMA, AND BROWNWOOD, TEXAS
                           (at 98 percent completion)

<TABLE>
<CAPTION>
                                                             El Dorado/Camden    Harrison and         Enid and
                                                               and Jonesboro     Hot Springs         Ponca City          Brownwood
                                                               -------------     -----------         ----------          ---------

<S>                           <C>                            <C>                <C>                <C>                 <C>
Departures                    App. C, p. 2                         3,058              3,670              4,178               1,835
Block Hours                   App. C, p. 2                         3,364              3,211              3,932               1,376
Revenue passenger-miles       App. C, p. 3                     4,578,742          3,678,948          7,135,390             783,000
Available seat-miles          App. C, p. 2                    13,642,456         13,074,375         16,273,801           4,706,775

Revenues :
  Passenger                   App. C. P. 3                   $ 1,125,669        $   854,928        $ 1,668,553         $   214,600
  Freight                     1.0% of psgr rev                    11,257              8,549             16,686               2,146
                                                             -----------        -----------        -----------         -----------
Total Revenues                                               $ 1,136,926        $   863,477        $ 1,685,239         $   216,746

Direct Expenses:
  Crew & Training             $135.00 per block hour         $   454,140        $   433,485        $   530,820         $   185,760
  Fuel & Oil                  $106.60 per block hour             358,602            342,293            419,151             146,682
  Hull Insurance              $13.30 per block hour               44,741             42,706             52,296              18,301
  Maintenance                 $245.09 per block hour             824,483            786,984            963,694             337,244
  Aircraft Rent               $82.09 per block hour              276,151            263,591            322,778             112,956
                                                             -----------        -----------        -----------         -----------
Total Direct Expenses                                        $ 1,958,117        $ 1,869,059        $ 2,288,739         $   800,943

Indirect Expenses:
  Traffic-related             $0.072 per RPM                 $   329.669        $   264,844        $   513,748         $    56,376
  Marketing                   $5,000 per community                10,000             10,000             10,000               5,000
  Departure-related           $117.59 per departure              359,590            431,555            491,291             215,778
  Capacity-related            $0.01 per ASM                  $   136,425            130,744            162,738              47,068
                                                             -----------        -----------        -----------         -----------
Total Indirect Expenses                                      $   835,684        $   837,143        $ 1,177,777         $   324,222

Total Operating Expenses                                     $ 2,793,801        $ 2,706,202        $ 3,466,516         $ 1,125,165

Operating Loss                                               $ 1,656,875        $ 1,842,725        $ 1,781,277             908,419
Profit Element at 5% of Total
  Operating Expenses                                         $   139,690            135,311        $   173,326              56,258

Compensation Requirement                                     $ 1,796,565        $ 1,978,036        $ 1,954,603         $   964,677

</TABLE>

<PAGE>

                                                                      APPENDIX C
                                                                     Page 2 of 3

                         ANNUAL DEPARTURES, BLOCK HOURS,
                            AND AVAILABLE SEAT-MILES

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------
                                                       Dpts       Block Hours    ASMs

-----------------------------------------------------------------------------------------
<S>                                                   <C>        <C>         <C>
El Dorado/Camden-Dallas/Ft. Worth
  36 dpts x 52 weeks x .98 completion                  1,835
  1,835 dpts x 70 min/60                                            2,141
  1,835 dpts x 19 seats x 246 mi                                               8,576,790
Jonesboro-El Dorado/Camden
  24 dpts x 52 weeks x .98 completion                  1,223
  1,223 dpts x 60 min/60                                            1,223
  1,223 dpts x 19 seats x 218 mi                                               5,065,666

Total                                                  3,058        3,364     13,642,456

-----------------------------------------------------------------------------------------
Hot Springs-Dallas/Ft. Worth
  36 dpts x 52 weeks x .98 completion                  1,835
  1,835 dpts x 70 min/60                                            2,141
  1,835 dpts x 19 seats x 252 mi                                               8,785,980
Harrison-Hot Springs
  36 dpts x 52 weeks x .98 completion                  1,835
  1,835 dpts x 35 min/60                                            1,070
  1,835 dpts x 19 seats x 123 mi                                               4,288,395

Total                                                  3,670        3,211     13,074,375

-----------------------------------------------------------------------------------------
Enid-Ponca City
  32 dpts x 52 weeks x .98 completion                  1,631
  1,631 dpts x 20 min/60                                              544
  1,631 dpts x 19 seats x 45 mi                                                1,394,505
Enid-Dallas/Ft. Worth
  18 dpts x 52 weeks x .98 completion                    917
  917 dpts x 70 min/60                                              1,070
  917 dpts x 19 seats x 244 mi                                                 4,251,212
Ponca City-Dallas/Ft. Worth
  18 dpts x 52 weeks x .98 completion                    917
  917 dpts x 70 min/60                                              1,070
  917 dpts x 19 seats x 264 mi                                                 4,599,672
Enid-Denver
  14 dpts x 52 weeks x .98 completion                    713
  713 dpts x 105 min/60                                             1,248
  713 dpts x 19 seats x 445 mi                                                 6,028,415

Total                                                  4,178        3,932     16,273,804

-----------------------------------------------------------------------------------------
Brownwood-Dallas/Ft. Worth
  36 dpts x 52 weeks x .98 completion                  1,835
  1,835 dpts x 45 min/60                                            1,376
  1,835 dpts x 19 seats x 135 mi                                               4,706,115

-----------------------------------------------------------------------------------------
</TABLE>

<PAGE>

                                                                      APPENDIX C
                                                                     Page 3 Of 3

                     ANNUAL PASSENGERS, PASSENGER REVENUE,
                           AND REVENUE PASSENGER-MILES

<TABLE>
<CAPTION>

--------------------------------------------------------------------------------
                                                     Psgr Rev          RPMs

--------------------------------------------------------------------------------
<S>                                               <C>               <C>
El Dorado/Camden-Dallas/Ft. Worth
  4,689 psgrs x $87.75                            $  411,460
  4,689 psgrs x 246 mi                                              1,153,494
Jonesboro-Dallas/Ft. Worth
  7,382 psgrs x $96.75                               714,209
  7,382 psgrs x (218 + 246 mi)                                      3,425,248

Total: 12,071 psgrs                               $1,125,669        4,578,742

--------------------------------------------------------------------------------
Hot Springs-Dallas/Ft. Worth
  5,424 psgrs x $69.00                            $  374,256
  5,424 psgrs x 252 mi                                              1,366,848
Harrison-Dallas/Ft. Worth
  5,772 psgrs x $76.00                               438,672
  5,772 psgrs x (252 + 123 mi)                                      2,164,500
Hot Springs-Harrison
  1,200 psgrs x $35.00                                42,000
  1,200 psgrs x 123 mi                                                147,600

Total: 12,396 psgrs                               $  854,928        3,678,948

--------------------------------------------------------------------------------
Enid-Dallas/Ft. Worth
  4,040 psgrs x $64.00                            $  258,560
  4,040 psgrs x (244 + 264 + 45 mi)/2                               1,117,060
Enid-Denver
  4,887 psgrs x $109.00                              532,683
  4,887 psgrs x 445 mi                                              2,174,715
Ponca City-Dallas/Ft. Worth
  5,510 psgrs x $66.00                               363,660
  5,510 psgrs x (264 + 244 + 45 mi)/2                               1,523,515
Ponca City-Denver
  3,350 psgrs x $109.00                              365,150
  3,350 psgrs x (445 + 45 mi)                                       1,641,500
Dallas/Ft. Worth-Denver
  900 psgrs x $165.00                                148,500
  900 psgrs x (264 + 45 + 445 mi)                                     678,600

Total: 18,687 psgrs                               $1,668,553        7,135,390

--------------------------------------------------------------------------------
Brownwood-Dallas/Ft. Worth
  5,800 psgrs x $37.00                            $  214,600
  5,800 psgrs x 135 mi                                                783,000

--------------------------------------------------------------------------------
</TABLE>

<PAGE>

                                                                      APPENDIX D
                                                                     Page 1 of 2

                               AIR MIDWEST, INC.
                            ESSENTIAL AIR SERVICE AT
        EL DORADO/CAMDEN, HARRISON, HOT SPRINGS AND JONESBORO, ARKANSAS,
              ENID AND PONCA CITY, OKLAHOMA, AND BROWNWOOD, TEXAS

<Table>
<S>                                     <C>
--------------------------------------------------------------------------------
EFFECTIVE PERIOD                         Two years, beginning on the date that
                                         the carrier begins service through the
                                         24th month following the commencement
                                         of service
--------------------------------------------------------------------------------
SERVICE

El Dorado/Camden                         18 nonstop round trips to Dallas/Ft.
                                         Worth each week
Jonesboro                                12 nonstop or one-stop round trips to
                                         Dallas/Ft. Worth each week
Harrison                                 18 nonstop or one-stop round trips to
                                         Dallas/Ft. Worth each week
Hot Springs                              18 nonstop round trips to Dallas/Ft.
                                         Worth each week
Enid and Ponca City                      17 nonstop or one-stop round trips to
                                         Dallas/Ft. Worth and 7 nonstop or
                                         one-stop round trips to Denver each
                                         week. At its own discretion, the
                                         carrier may instead operate all 24
                                         round trips to Dallas/Ft. Worth.
Brownwood                                18 nonstop round trips to Dallas/Ft.
                                         Worth each week

--------------------------------------------------------------------------------
AIRCRAFT TYPE                            Beech 1900 (19 seats)

--------------------------------------------------------------------------------
TIMING OF FLIGHTS                        Flights must be well-timed and
                                         well-spaced to ensure full compensation

--------------------------------------------------------------------------------
SUBSIDY RATE PER
ARRIVAL/DEPARTURE
El Dorado/Camden and Jonesboro           $587.50 1/
Harrison and Hot Springs                 $538.97 2/
Enid and Ponca City                      $399.55 3/
Brownwood                                $525.71 4/

--------------------------------------------------------------------------------
COMPENSATION CEILING
EACH WEEK
El Dorado/Camden and Jonesboro           $35,250.00 5/
Harrison and Hot Springs                 $38,805.84 6/
Enid and Ponca City                      $38,356.80 7/
Brownwood                                $18,925.56 8/
--------------------------------------------------------------------------------
</Table>

                     FOOTNOTES APPEAR ON THE FOLLOWING PAGE

<PAGE>

                                                                     APPENDIX D
                                                                     Page 2 of 2

                                      NOTE

The carrier understands that it may forfeit its compensation for any flights
that it does not operate in conformance with the terms and stipulations of the
rate order, including the service plan outlined in the order and any other
significant elements of the required service, without prior approval. The
carrier understands that an aircraft take-off and landing at its scheduled
destination constitutes a completed flight; absent an explanation supporting
subsidy eligibility for a flight that has not been completed, such as certain
weather cancellations, only completed flights are considered eligible for
subsidy. In addition, if the carrier does not schedule or operate its flights in
full conformance with the order for a significant period, it may jeopardize its
entire subsidy claim for the period in question. If the carrier contemplates any
such changes beyond the scope of the order during the applicable period of these
rates, it must first notify the Office of Aviation Analysis in writing and
receive written approval from the Department to be assured of full compensation.
Should circumstances warrant, the Department may locate and select a replacement
carrier to provide service on these routes. The carrier must complete all
flights that can be safely operated; flights that overfly points for lack of
traffic will not be compensated. In determining whether subsidy payment for a
deviating flight should be adjusted or disallowed, the Department will consider
the extent to which the goals of the program are met and the extent of access to
the national air transportation system provided to the community.

If the Department unilaterally, either partially or completely, terminates or
reduces payments for service or changes service requirements at a specific
location provided for under this agreement, then, at the end of the period for
which the Department does make payments in the agreed amounts or at the agreed
service levels, the carrier may cease to provide service to that specific
location without regard to any requirement for notice of such cessation. Those
adjustments in the levels of subsidy and/or service that are mutually agreed to
in writing by the parties to this agreement do not constitute a total or partial
reduction or cessation of payment.

Subsidy contracts are subject to, and incorporate by reference, relevant
statutes and Department regulations, as they may be amended from time to time.
However, any such statutes, regulations, or amendments thereto shall not operate
to controvert the foregoing paragraph.

                                   FOOTNOTES

1/ Annual compensation of $1,796,565 divided by 3,058 annual arrivals and
departures at a 98 percent completion factor, calculated as follows: 60 x 52
weeks x .98 completion = 3,058.
2/ Annual compensation of $1,978,036 divided by 3,670 annual arrivals and
departures at a 98 percent completion factor, calculated as follows: 72 x 52
weeks x .98 completion = 3,670.
3/ Annual compensation of $1,954,603 divided by 4,892 annual arrivals and
departures at a 98 percent completion factor, calculated as follows: 96 x 52
weeks x .98 completion = 4,892.
4/ Annual compensation of $964,677 divided by 1,835 annual arrivals and
departures at a 98 percent completion factor, calculated as follows: 36 x 52
weeks x .98 completion = 1,835.
5/ Subsidy rate per arrival/departure of $587.50 multiplied by 60
subsidy-eligible arrivals and departures each week.
6/ Subsidy rate per arrival/departure of $538.97 multiplied by 72
subsidy-eligible arrivals and departures each week.
7/ Subsidy rate per arrival/departure of $399.55 multiplied by 96
subsidy-eligible arrivals and departures each week.
8/ Subsidy. rate per arrival/departure of $525.71 multiplied by 36
subsidy-eligible arrivals and departures each week.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00043-of-00352.parquet"}]]