Section 469(a) disallows passive activity losses and credits for the
                        taxable year for individuals, estates, trusts, closely held C corporations,
                        and personal service corporations.  Section 469(c)(2) provides that, except
                        as provided in § 469(c)(7) (concerning special rules for taxpayers
                        engaged in real property businesses), the term passive activity includes any
                        rental activity.  Section 469(c)(4) provides that § 469(c)(2) shall
                        be applied without regard to whether or not the taxpayer materially participates
                        in the activity.
                     
                     Section 469(j)(8) defines ”rental activity” as any activity
                        where payments are principally for the use of tangible property. 
                     
                     Section 1.469-1T(e)(1) of the temporary Income Tax Regulations provides
                        in general that an activity is a passive activity of the taxpayer for a taxable
                        year if and only if the activity: (i) is a trade or business activity (within
                        the meaning of § 1.469-1T(e)(2)) in which the taxpayer does not
                        materially participate for the taxable year; or (ii) a rental activity (within
                        the meaning of § 1.469-1T(e)(3)), without regard to whether or to
                        what extent the taxpayer participates in the activity.
                     
                     Section 1.469-1T(e)(3)(i) provides in general that an activity is a
                        rental activity for a taxable year if: (A) during the taxable year, tangible
                        property held in connection with the activity is used by customers or held
                        for use by customers; and (B) the gross income attributable to the conduct
                        of the activity during the taxable year represents (or, in the case of an
                        activity in which property is held for use by customers, the expected gross
                        income from the conduct of the activity will represent) amounts paid or to
                        be paid principally for the use of the tangible property (without regard to
                        whether the use of the property by customers is pursuant to a lease or pursuant
                        to a service contract or other arrangement that is not denominated a lease).
                     
                     Section 1.469-1T(e)(3)(ii)(C) provides that an activity involving the
                        use of tangible property is not a rental activity for a taxable year if for
                        the taxable year extraordinary personal services (within the meaning of § 1.469-1T(e)(3)(v))
                        are provided by or on behalf of the owner of the property in connection with
                        making the property available for use by customers (without regard to the
                        average period of customer use).
                     
                     Section 1.469-1T(e)(3)(v) provides that for purposes of § 1.469-1T(e)(3)(ii)(C),
                        extraordinary personal services are provided in connection with making property
                        available for use by customers only if the services provided in connection
                        with the use of the property are performed by individuals, and the use by
                        customers of the property is incidental to their receipt of the services.
                         For example, the use by patients of a hospital’s boarding facilities
                        generally is incidental to their receipt of the personal services provided
                        by the hospital’s medical and nursing staff.  Similarly, the use by
                        students of a boarding school’s dormitories generally is incidental
                        to their receipt of the personal services provided by the school’s teaching
                        staff.
                     
                     Section 1.469-1T(e)(3)(viii) provides several examples to illustrate
                        the operation of § 1.469-1T(e)(3).  In Example (1), the taxpayer
                        is engaged in an activity of leasing photocopying equipment.  The average
                        period of customer use for the equipment exceeds 30 days.  Pursuant to the
                        lease agreements, skilled technicians employed by the taxpayer maintain the
                        equipment and service malfunctioning equipment for no additional charge. 
                        Service calls occur frequently (three times per week on average) and require
                        substantial labor.  The value of the maintenance and repair services (measured
                        by the cost to the taxpayer of employees performing these services) exceeds
                        50 percent of the amount charged for the use of the equipment.  Under these
                        facts, services performed by individuals are provided in connection with the
                        use of the photocopying equipment, but the customers’ use of the photocopying
                        equipment is not incidental to their receipt of the services.  Therefore,
                        extraordinary personal services (within the meaning of § 1.469-1T(e)(3)(v))
                        are not provided in connection with making the photocopying equipment available
                        for use by customers, and the activity is a rental activity.
                     
                      In Example (3) of § 1.469-1T (e)(3)(viii), the taxpayer
                        is engaged in an activity of transporting goods for customers.  In conducting
                        the activity, the taxpayer provides tractor-trailers to transport goods for
                        customers pursuant to arrangements under which the tractor-trailers are selected
                        by the taxpayer, may be replaced at the sole option of the taxpayer, and are
                        operated and maintained by drivers and mechanics employed by the taxpayer.
                         The average period of customer use for the tractor-trailers exceeds 30 days.
                         Under these facts, the use of tractor-trailers by taxpayer’s customers
                        is incidental to their receipt of personal services provided by the taxpayer.
                         Accordingly, the services performed in the activity are extraordinary personal
                        services (within the meaning of § 1.469-1T(e)(3)(v)) and, under
                        § 1.469-1T(e)(3)(ii)(C), the activity is not a rental activity.
                     
                     Section 1.469-4 sets forth the rules for grouping a taxpayer’s
                        trade or business activities and rental activities for purposes of applying
                        the passive activity loss and credit limitation rules of § 469.
                         Section 1.469-4(a) further states that a taxpayer’s activities include
                        those conducted through C corporations that are subject to § 469,
                         S corporations, and partnerships.
                     
                     Section 1.469-4(b)(1) states that ”trade or business activities”
                        are activities, other than rental activities or activities that are treated
                        under § 1.469-1T(e)(3)(vi)(B) as incidental to an activity of holding
                        property for investment, that: (i) involve the conduct of a trade or business
                        (within the meaning of § 162); (ii) are conducted in anticipation
                        of the commencement of a trade or business; or (iii) involve research or experimental
                        expenditures that are deductible under § 174 (or would be deductible
                        if the taxpayer adopted the method described in § 174(a)).  Section
                        1.469-4(b)(2) provides that ”rental activities” are activities
                        that constitute rental activities within the meaning of § 1.469-1T(e)(3).
                     
                     Section 1.469-4(c)(1) states that one or more trade or business activities
                        or rental activities may be treated as a single activity if the activities
                        constitute an appropriate economic unit for the measurement of gain or loss
                        for purposes of § 469.  Section 1.469-4(c)(2) provides that a facts
                        and circumstances test determines whether activities constitute an appropriate
                        economic unit.
                     
                     Section 1.469-4(c)(3) provides several examples that illustrate the
                        application of § 1.469-4(c).  In Example (2), Taxpayer B,
                        an individual, is a partner in a business that sells non-food items to grocery
                        stores (partnership L).  B also
                        is a partner in a partnership that owns and operates a trucking business (partnership Q).
                         The two partnerships are under common control.  The predominant portion of Q’s
                        business is transporting goods for L, and Q is
                        the only trucking business in which B is involved.  Under
                        § 1.469-4(c), B appropriately treats L’s
                        wholesale activity and Q’s trucking activity as
                        a single activity.
                     
                     Section 1.469-4(d)(1) limits a taxpayer’s ability to group a rental
                        activity with a trade or business activity and § 1.469-4(d)(5)(ii)
                        provides that an activity that a taxpayer conducts through a C corporation
                        subject to § 469 may be grouped with another activity of the taxpayer,
                        but only for purposes of determining whether the taxpayer materially or significantly
                        participates in the other activity.
                     
                     Section 1.469-5(f)(1) provides in general that any work done by an individual
                        (without regard to the capacity in which the individual does the work) in
                        connection with an activity in which the individual owns an interest at the
                        time the work is done shall be treated as participation of the individual
                        in the activity.
                     
                     Section 1.469-5T(a) provides in general that an individual shall be
                        treated, for purposes of § 469 and the regulations thereunder, as
                        materially participating in an activity for the taxable year if and only if:
                        (1) the individual participates in the activity for more than 500 hours during
                        the year; (2) the individual’s participation in the activity for the
                        taxable year constitutes substantially all of the participation in the activity
                        of all individuals (including individuals who are not owners of interests
                        in the activity) for the year; (3) the individual participates in the activity
                        for more than 100 hours during the taxable year, and the individual’s
                        participation in the activity is not less than the participation in the activity
                        of any other individual (including individuals who are not owners of interests
                        in the activity) for such year; (4) the activity is a significant participation
                        activity (within the meaning of § 1.469-5T(c)) for the taxable year,
                        and the individual’s aggregate participation in all significant participation
                        activities during the year exceeds 500 hours; (5) the individual materially
                        participated in the activity (determined without regard to § 1.469-5T(a)(5))
                        for any five taxable years (whether or not consecutive) during the ten taxable
                        years that immediately precede the taxable year; (6) the activity is a personal
                        service activity (within the meaning of § 1.469-5T(d)), and the
                        individual materially participated in the activity for any three taxable years
                        (whether or not consecutive) preceding the taxable year; or (7) based on all
                        of the facts and circumstances (taking into account the rules in § 1.469-5T(b)),
                        the individual participates in the activity on a regular, continuous, and
                        substantial basis during the year.
                     
                     Section 4261(a) imposes a tax on the amount paid for taxable transportation
                        of any person by air and § 4261(b) imposes a tax on the amount paid
                        for each domestic segment of taxable transportation.  Section 4262(a)(1) generally
                        defines taxable transportation as including transportation by air which begins
                        and ends in the United States.  Section 4262(d) provides that the term ”transportation”
                        includes layover or waiting time and movement of the aircraft in deadhead
                        service.  All amounts paid for air transportation service, including hourly, per
                              diem, or monthly fees, are subject to the tax imposed by § 4261.
                         Rev. Rul. 76-556, 1976-2 C.B. 354.
                     
                     Under § 4261(d), the tax generally is paid by the person making
                        payment for the air transportation service and § 4291 generally
                        provides that the person receiving the payment is responsible for collecting
                        the tax.  Section 40.6011(a)-1(a)(3) of the Excise Tax Procedural Regulations
                        provides that the person required to collect the tax must file the return.
                     
                     If the owner of an aircraft leases it to others for the transportation
                        of persons but retains possession, command, and control of the aircraft, the
                        owner is furnishing taxable transportation within the meaning of § 4261.
                         However, if the owner of the aircraft transfers the complete possession,
                        command, and control of the aircraft, the owner is not engaging in a taxable
                        transportation service, but is merely leasing the aircraft.  Rev. Rul. 60-311,
                        1960-2 C.B. 341.  If the owner of the aircraft employs the pilot and crew
                        and provides their services with the aircraft, the owner is deemed to have
                        the essential elements of possession, command, and control of the aircraft
                        at all times, irrespective of the fact that the lessee may direct the pilot
                        as to destination and other details concerning actual flights when using the
                        aircraft.  Rev. Rul. 76-394, 1976-2 C.B. 355.  
                     
                      Situation 1. In this situation, SCorp1 holds
                        an aircraft in connection with its activities, such aircraft is used by customers
                        or held for use by customers, and the gross income attributable to the conduct
                        of the activities represents an amount paid or to be paid principally for
                        the use of the aircraft.  Therefore, the activity conducted in SCorp1 is
                        a rental activity.  Section 1.469-1T(e)(3)(i).  Section 1.469-1T(e)(3)(ii)(C)
                        does not alter this conclusion because there are no extraordinary personal
                        services provided in connection with making the aircraft available to Corp1 and
                        because the use of the aircraft, rather than the provision of services, is
                        the dominant element of the relationship between SCorp1 and Corp1.
                         See Frank v. Commissioner, T.C. Memo 1996-177 (1996)
                        (holding that taxpayer’s losses from its airplane leasing activities
                        were passive because the services rendered to the lessee were not the dominant
                        element of the relationship between the taxpayer and the lessee).  
                     
                     This ruling does not address whether § 1.469-4(d)(1), which
                        limits a taxpayer’s ability to group a rental activity with a trade
                        or business activity, would prevent A from grouping the
                        rental activity conducted through SCorp1 with the trade
                        or business activity conducted through Corp1.  Even if
                        such a grouping were permitted, however, § 1.469-4(d)(5)(ii) provides
                        that a taxpayer can group activities conducted through a closely held C corporation
                        with other activities of the taxpayer only for the purpose of establishing
                        material or significant participation in the other activities.  Consequently,
                        grouping the activities A conducts through Corp1 and SCorp1 will
                        not change the character of the activity A conducts through SCorp1.
                         The activity will remain a rental activity because the grouping is only for
                        purposes of establishing material or significant participation and will remain
                        a passive activity because, under § 469(c)(4), material participation
                        in rental activities does not change their passive nature.  Accordingly, the
                        losses incurred by A through SCorp1 are
                        losses from a passive activity and are subject to the limitations of § 469.
                     
                      SCorp1 does not provide taxable transportation
                        within the meaning of § 4262(a)(1) to Corp1 because SCorp1 does
                        not retain possession, command and control of the aircraft; thus, the taxes
                        imposed by § 4261 do not apply to amounts paid by Corp1 to SCorp1 for
                        the lease of the aircraft.
                     
                      Situation 2.  In this situation, the services
                        provided by SCorp2 in connection with the use of the
                        aircraft by Corp2 are provided by individuals.  In addition,
                        the use of the aircraft by Corp2 is incidental to Corp2’s
                        receipt of the services provided, as the use of a seat on the aircraft is
                        incidental to the passenger’s receipt of the personal services provided
                        by the aircraft’s air transportation staff.  Accordingly, extraordinary
                        personal services within the meaning of § 1.469-1T(e)(3)(v) are
                        provided on behalf of the owner of the aircraft in connection with making
                        the aircraft available for use by customers.  Therefore, the activity B conducts
                        through SCorp2 is not a rental activity for purposes
                        of § 469.  Section 1.469-1T(e)(3)(ii)(C).  
                     
                     Pursuant to § 1.469-1T(e)(1)(i), the air transportation activity
                        is not a passive activity if B materially participates
                        in the activity.  In this situation, Corp2 and SCorp2 are
                        under common control, the predominant portion of SCorp2’s
                        air transportation service business is transporting executives for Corp2,
                        and SCorp2 is the only air transportation service business
                        in which B is involved.  B has consistently
                        chosen to group the activity conducted through SCorp2 with Corp2’s
                        trade or business activity and to treat those activities as a single activity
                        for the measurement of material participation in the activity of SCorp2.
                         Section 1.469-4(c)(1) and (c)(3), Example (2).  Because B participates
                        for more than 500 hours in the Corp2 activity that is
                        grouped with the activity conducted through SCorp2 for
                        purposes of measuring material participation in the SCorp2 activity, B materially
                        participates in the SCorp2 activity under § 1.469-5T(a)(1).
                         Accordingly, the provision of air transportation services is not a passive
                        activity, and losses incurred by B through SCorp2 are
                        not subject to the limitations of § 469.  If, however, B did
                        not participate in Corp 2 for more than 500 hours and
                        did not otherwise materially participate in the grouped activities, the losses
                        incurred by B through SCorp2 would
                        be subject to the passive loss limitations of § 469.
                     
                      SCorp2 provides taxable transportation service
                        to Corp2 because SCorp2 retains
                        possession, command and control of the aircraft; thus, the taxes imposed by
                        § 4261 apply to the amounts paid (including monthly and hourly fees)
                        by Corp2 to SCorp2 for the taxable
                        transportation.  Corp2 is liable for the tax and SCorp2 is
                        responsible for collecting the § 4261 taxes and filing the return.