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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION  FORM 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended June 30, 2004
 or [   ] TRANSITION REPORT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from  to
 Commission File No. 333-113340 MEWBOURNE ENERGY PARTNERS 04-A, L.P. Delaware
    

    20-0718858(State or jurisdiction of
    
    (I.R.S. Employerincorporation or organization)
    
    Identification Number)3901 South Broadway, Tyler, Texas
    
    
    75701(Address of principal executive offices)
    
    (Zip Code)
 Registrants Telephone Number, including area code:(903) 561-2900 Not
Applicable  
 Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
[X] Yes  [   ] No 1




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Mewbourne Energy Partners 04-A, L. P. INDEX  
 Page No.Part I  Financial InformationItem 1. Financial StatementsBalance Sheet    June 30, 2004 (Unaudited)
    
    
    3Statement of Cash Flows (Unaudited)   For the period January 27, 2004 (date of inception) through June 30, 2004
    
    
    4Statement of Changes In Partners Capital (Unaudited)  For the period January 27, 2004 (date of inception) through June 30, 2004
    
    
    5Notes to Financial Statements
    
    
    6Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations
    
    
    7Item 4. Disclosure Controls and Procedures
    
    
    8Part II  Other InformationItem 1. Legal Proceedings
    
    
    8Item 6. Exhibits and Reports on Form 8-K
    
    
    8Certification of CEO Pursuant to Section 302Certification of CFO Pursuant to Section 302Certification of CEO Pursuant to Section 906Certification of CFO Pursuant to Section 906
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Mewbourne Energy Partners 04-A, L. P. 
 Part I  Financial Information 
 Item 1. Financial Statements 
 BALANCE SHEET
June 30, 2004(Unaudited) ASSETSCash
    
    $
    100Total assets
    
    $
    100PARTNERS CAPITALGeneral partners
    
    $
    100Limited partners
    
    
    0Partners capital
    
    $
    100
 The accompanying notes are an integral
part of the financial statements. 3




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Mewbourne Energy Partners 04-A, L. P. 
 STATEMENT OF CASH FLOWS
For the period January 27,2004 (date of inception)
through June 30, 2004
(Unaudited) Cash flows from financing activities:Capital contributions from partners
    
    $
    100Cash, end of period
    
    $
    100
 The accompanying notes are an integral
part of the financial statements. 4




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Mewbourne Energy Partners 04-A, L. P. 
 STATEMENT OF CHANGES IN PARTNERS CAPITAL
For the period January 27, 2004 (date of inception)
through June 30, 2004
(Unaudited) General
    
    LimitedPartners
    
    Partners
    
    TotalPartners
capital at January 27, 2004 (date of inception)
    
    $
    
    
    
    $
    
    
    
    $
    Contributions
    
    $
    100
    
    
    $
    
    
    
    $
    100Balance at June 30, 2004
    
    $
    100
    
    
    $
    
    
    
    $
    100
 The accompanying notes are an integral
part of the financial statements. 5




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Mewbourne Energy Partners 04-A, L.P. 
 NOTES TO FINANCIAL STATEMENTS
(Unaudited) 1. Accounting Policies In the opinion of management, the accompanying unaudited financial statements
contain all adjustments of a normal recurring nature necessary to present
fairly our financial position, cash flows and partners capital for the periods
presented. 2. Accounting for Oil and Gas Producing Activities Mewbourne Energy Partners 04-A, L.P., (the Partnership), a Delaware limited
partnership formed on January 27, 2004, to engage in oil and gas
development and production in Texas, Oklahoma, and New Mexico. As of June 30,
2004, the only financial activity which had occurred was the receipt of the
organizational contribution of $100. The offering of limited and general
partnership interests began on June 10, 2004. The minimum offering for the
partnership is $5,000,000 and the maximum offering for the partnership is
$30,000,000. As of August 10, 2004, interests aggregating $29,220,000 had been
sold to 1,100 subscribers of which $26,420,000 were sold to 1,003 subscribers
as general partner interests and $2,800,000 were sold to 97 subscribers as
limited partner interests. 3. Financial Statement Presentation From the period January 27, 2004 to June 30, 2004, the Registrant conducted no
business activity. Therefore, there are no items of income or expense for the
reporting period and, accordingly a statement of income is not provided. 6




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Item 2. Managements Discussion and Analysis of Financial Condition and
Results of Operations Mewbourne Energy Partners 04-A, L.P. (the Partnership) was formed January 27,
2004. Mewbourne Development Corporation (MD) is the Managing Partner, and
has the power and authority to manage, control and administer all partnership
affairs. As of June 30, 2004, the only financial activity which had occurred
was the receipt of the organizational contribution of $100. The offering of
limited and general partnership interests began on June 10, 2004. The minimum
offering for the partnership is $5,000,000 and the maximum offering for the
partnership is $30,000,000. As of August 10, 2004, interests aggregating
$29,220,000 had been sold to 1,100 subscribers of which $26,420,000 were sold
to 1,003 subscribers as general partner interests and $2,800,000 were sold to
97 subscribers as limited partner interests. Liquidity and Capital Resources Operations will be conducted with available funds and revenues generated from
oil and gas activities. No bank borrowing is anticipated. Results of Operations The Registrant had not commenced operations prior to the period ended June 30,
2004, therefore, there are no items of income or expense. 7




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Item 4. Disclosure Controls and Procedures Mewbourne Development Corporation (MDC), the Managing General Partner of the
Partnership, maintains a system of controls and procedures designed to provide
reasonable assurance as to the reliability of the financial statements and
other disclosures included in this report, as well as to safeguard assets from
unauthorized use or disposition. Within 90 days prior to the filing of this
report, MDCs Chief Executive Officer and Chief Financial Officer have
evaluated the effectiveness of the design and operation of our disclosure
controls and procedures with the assistance and participation of other members
of management. Based upon that evaluation, MDCs Chief Executive Officer and
Chief Financial Officer concluded that our disclosure controls and procedures
are effective for gathering, analyzing and disclosing the information the
Partnership is required to disclose in the reports it files under the
Securities Exchange Act of 1934 within the time periods specified in the SECs
rules and forms. There have been no significant changes in MDCs internal
controls or in other factors which could significantly affect internal controls
subsequent to the date MDC carried out its evaluation. 
 Part II  Other Information 
 Item 1. Legal Proceedings  None. 
 Item 6. Exhibits and Reports on Form 8-K  (a)
    
    Exhibits filed herewith. 31.1 Certification of CEO Pursuant to Section 302 of
Sarbanes-Oxley Act of 2002. 31.2 Certification of CFO Pursuant to Section 302 of
Sarbanes-Oxley Act of 2002. 32.1 Certification of CEO Pursuant to Section 906 of
Sarbanes-Oxley Act of 2002. 32.2 Certification of CFO Pursuant to Section 906 of
Sarbanes-Oxley Act of 2002.  (b)
    
    Reports on Form 8-K  none 8




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SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the
Partnership has duly caused this report to be signed on its behalf by the
undersigned thereto duly authorized. Mewbourne Energy Partners 04-A, L.P.By:
    
    Mewbourne Development CorporationManaging General PartnerDate: August 13, 2004
    
    By:
    
    /s/ Alan ClarkAlan Clark, Treasurer
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INDEX TO EXHIBITS EXHIBITNUMBER
    
    DESCRIPTION31.1
    
    Certification of CEO Pursuant to Section 302 of
Sarbanes-Oxley Act of 2002.31.2
    
    Certification of CFO Pursuant to Section 302 of
Sarbanes-Oxley Act of 2002.32.1
    
    Certification of CEO Pursuant to Section 906 of
Sarbanes-Oxley Act of 2002.32.2
    
    Certification of CFO Pursuant to Section 906 of
Sarbanes-Oxley Act of 2002.
 10