##### Table of Contents

---



UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549



FORM 10-Q



|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



For the quarterly period ended September 30, 2005



Or



| ̈ | TRANSITION REPORT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | -------------------------------------------------------------------------------



For the transition period from
 to



Commission File No. 333-113340



MEWBOURNE ENERGY PARTNERS 04-A, L.P.



|                                                         |  |                                        
|-------------------------------------------------------- |  | ---------------------------------------
|Delaware                                                 |  | 20-0718858                             
|(State or jurisdiction of incorporation or organization) |  | (I.R.S. Employer 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

(Former name, former address and former fiscal year,

if changed since last report)



Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 of 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



Indicate by checkmark whether the registrant is an accelerated filer (as defined in Rule
12b-2 of the Exchange Act). ̈Yes    x  No



Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of
the Exchange Act). ̈Yes    x  No



---



---

##### Table of Contents

Mewbourne Energy Partners 04-A, L.P.



INDEX



|                               |  |                                                                                                                                                                                                                             |  |         
|------------------------------ |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------
|                               |  |                                                                                                                                                                                                                             |  | Page No.
|Part I  Financial Information |  |                                                                                                                                                                                                                            
|                               |  |                                                                                                                                                                                                                            
|Item 1.                        |  | Financial Statements                                                                                                                                                                                                        |  |         
|                               |  |                                                                                                                                                                                                                            
|                               |  | Balance Sheets - September 30, 2005 (Unaudited) and December 31, 2004                                                                                                                                                       |  | 3       
|                               |  |                                                                                                                                                                                                                            
|                               |  | Statements of Operations (Unaudited) - For the three months ended September 30, 2005 and 2004, the nine months ended September 30, 2005 and the period from January 27, 2004 (date of inception) through September 30,
2004 |  | 4       
|                               |  |                                                                                                                                                                                                                            
|                               |  | Statements of Cash Flows (Unaudited) - For the nine months ended September 30, 2005 and the period from January 27, 2004 (date of inception) through September 30, 2004                                                     |  | 5       
|                               |  |                                                                                                                                                                                                                            
|                               |  | Statement of Changes In Partners Capital (Unaudited) - For the nine months ended September 30, 2005                                                                                                                        |  | 6       
|                               |  |                                                                                                                                                                                                                            
|                               |  | Notes to Financial Statements                                                                                                                                                                                               |  | 7       
|                               |  |                                                                                                                                                                                                                            
|Item 2.                        |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                                                                                                                                       |  | 10      
|                               |  |                                                                                                                                                                                                                            
|Item 4.                        |  | Disclosure Controls and Procedures                                                                                                                                                                                          |  | 12      
|                               | 
|Part II  Other Information    |  |                                                                                                                                                                                                                            
|                               |  |                                                                                                                                                                                                                            
|Item 1.                        |  | Legal Proceedings                                                                                                                                                                                                           |  | 12      
|                               |  |                                                                                                                                                                                                                            
|Item 6.                        |  | Exhibits and Reports on Form 8-K                                                                                                                                                                                            |  | 12      



2



---

##### Table of Contents

Mewbourne Energy Partners 04-A, L.P.



Part I  Financial Information



|Item 1. | Financial Statements
|------- | --------------------



BALANCE SHEETS

September 30, 2005 and December 31, 2004



|                                                          |  |                   |            |   |                  |   |            |  
|--------------------------------------------------------- |  | ----------------- | ---------- | - | ---------------- | - | ---------- | -
|                                                          |  | September 30,2005 |            |   | December 31,2004 |  
|                                                          |  | (Unaudited)       |            |   |                  |  
|ASSETS                                                    |  |                   |            |   |                  |   |            |  
|Cash and cash equivalents                                 |  | $                 | 1,095,546  |   |                  | $ | 10,630,997 |  
|Accounts receivable, affiliate                            |  |                   | 4,747,892  |   |                  |   | 690,040    |  
|Accounts receivable, other                                |  |                   | 395        |   |                  |   |           |  
|                                                          |  |                   |            |   |                  |   |            |  
|Total current assets                                      |  |                   | 5,843,833  |   |                  |   | 11,321,037 |  
|                                                          |  |                   |            |   |                  |   |            |  
|Prepaid well cost                                         |  |                   |           |   |                  |   | 7,937,853  |  
|                                                          |  |                   |            |   |                  |   |            |  
|Oil and gas properties at cost, full cost method          |  |                   | 28,551,368 |   |                  |   | 9,505,563  |  
|Less accumulated depreciation, depletion and amortization |  |                   | (4,288,074 | ) |                  |   | (252,014   | )
|                                                          |  |                   |            |   |                  |   |            |  
|                                                          |  |                   | 24,263,294 |   |                  |   | 9,253,549  |  
|                                                          |  |                   |            |   |                  |   |            |  
|Total assets                                              |  | $                 | 30,107,127 |   |                  | $ | 28,512,439 |  
|                                                          |  |                   |            |   |                  |   |            |  
|LIABILITIES AND PARTNERS CAPITAL                         |  |                   |            |   |                  |   |            |  
|Accounts payable, affiliate                               |  | $                 | 1,641,361  |   |                  | $ | 501,212    |  
|Accounts payable, other                                   |  |                   | 4,892      |   |                  |   |           |  
|                                                          |  |                   |            |   |                  |   |            |  
|Total accounts payable                                    |  |                   | 1,646,253  |   |                  |   | 501,212    |  
|                                                          |  |                   |            |   |                  |   |            |  
|Asset retirement obligation plugging liability            |  |                   | 373,820    |   |                  |   | 112,534    |  
|                                                          |  |                   |            |   |                  |   |            |  
|Partners capital                                         |  |                   |            |   |                  |   |            |  
|General partners                                          |  |                   | 25,498,364 |   |                  |   | 25,327,364 |  
|Limited partners                                          |  |                   | 2,588,690  |   |                  |   | 2,571,329  |  
|                                                          |  |                   |            |   |                  |   |            |  
|Total partners capital                                   |  |                   | 28,087,054 |   |                  |   | 27,898,693 |  
|                                                          |  |                   |            |   |                  |   |            |  
|Total liabilities and partners capital                   |  | $                 | 30,107,127 |   |                  | $ | 28,512,439 |  
|                                                          |  |                   |            |   |                  |   |            |  



The accompanying notes
are an integral part of the financial statements.



3



---

##### Table of Contents



Mewbourne Energy Partners 04-A, L.P.



STATEMENTS OF OPERATIONS

For the three months ended September 30, 2005 and 2004,

the nine months ended September 30, 2005 and the period from

January 27, 2004 (date of inception) through September 30, 2004

(Unaudited)



|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|---------------------------------------------------------------------------------------------------- |  | -------------------------------- | --------- | ------------------------------------------------ | - | ------ |  | ---- | ---------- |  | - | ------
|                                                                                                     |  | Three Months Ended September 30, |           | Nine Months Ended and Period Ended September 30,
|                                                                                                     |  | 2005                             |           | 2004                                             |   | 2005   |  | 2004
|Revenues and other income:                                                                           |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Oil and gas sales                                                                                    |  | $                                | 5,969,746 |                                                  | $ |       |  | $    | 12,388,841 |  | $ |      
|Interest income                                                                                      |  |                                  | 7,831     |                                                  |   | 23,039 |  |      | 95,081     |  |   | 23,039
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Total revenues and other income                                                                      |  |                                  | 5,977,577 |                                                  |   | 23,039 |  |      | 12,483,922 |  |   | 23,039
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Expenses:                                                                                            |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Lease operating expense                                                                              |  |                                  | 135,314   |                                                  |   | 82     |  |      | 281,325    |  |   | 82    
|Production taxes                                                                                     |  |                                  | 549,022   |                                                  |   |       |  |      | 1,107,465  |  |   |      
|Administrative and general expense                                                                   |  |                                  | 198,319   |                                                  |   | 4,301  |  |      | 418,616    |  |   | 4,301 
|Depreciation, depletion, and amortization                                                            |  |                                  | 1,667,810 |                                                  |   |       |  |      | 4,036,060  |  |   |      
|Asset retirement obligation accretion                                                                |  |                                  | 2,781     |                                                  |   |       |  |      | 11,270     |  |   |      
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Net income                                                                                           |  | $                                | 3,424,331 |                                                  | $ | 18,656 |  | $    | 6,629,186  |  | $ | 18,656
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Allocation of net income:                                                                            |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|General partners                                                                                     |  | $                                | 3,108,722 |                                                  | $ | 16,921 |  | $    | 6,018,196  |  | $ | 16,921
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Limited partners                                                                                     |  | $                                | 315,609   |                                                  | $ | 1,735  |  | $    | 610,990    |  | $ | 1,735 
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       
|Basic and diluted net income per limited and general partner interest (30,000 interests outstanding) |  | $                                | 114.14    |                                                  | $ | .62    |  | $    | 220.97     |  | $ | .62   
|                                                                                                     |  |                                  |           |                                                  |   |        |  |      |            |  |   |       



The accompanying notes
are an integral part of the financial statements.



4



---

##### Table of Contents



Mewbourne Energy Partners 04-A, L.P.



STATEMENTS OF CASH FLOWS

For the nine months ended September 30, 2005 and

the period from January 27, 2004 (date of inception)

through September 30, 2004

(Unaudited)



|                                                                                           |  |      |             |   |      |   |            |  
|------------------------------------------------------------------------------------------ |  | ---- | ----------- | - | ---- | - | ---------- | -
|                                                                                           |  | 2005 |             |   | 2004 |  
|Cash flows from operating activities:                                                      |  |      |             |   |      |   |            |  
|Net income                                                                                 |  | $    | 6,629,186   |   |      | $ | 18,656     |  
|Adjustment to reconcile net income to net cash provided by (used in) operating activities: |  |      |             |   |      |   |            |  
|Depreciation, depletion, and amortization                                                  |  |      | 4,036,060   |   |      |   |           |  
|Asset retirement obligation accretion                                                      |  |      | 11,270      |   |      |   |           |  
|Changes in operating assets and liabilities:                                               |  |      |             |   |      |   |            |  
|Accounts receivable                                                                        |  |      | (4,058,247  | ) |      |   | (22,705    | )
|Accounts payable                                                                           |  |      | 1,145,041   |   |      |   |           |  
|                                                                                           |  |      |             |   |      |   |            |  
|Net cash provided by (used in) operating activities                                        |  |      | 7,763,310   |   |      |   | (4,049     | )
|                                                                                           |  |      |             |   |      |   |            |  
|Cash flows from investing activities:                                                      |  |      |             |   |      |   |            |  
|Purchase and development of oil and gas properties                                         |  |      | (10,857,936 | ) |      |   | (1,612,288 | )
|                                                                                           |  |      |             |   |      |   |            |  
|Net cash used in investing activities                                                      |  |      | (10,857,936 | ) |      |   | (1,612,288 | )
|                                                                                           |  |      |             |   |      |   |            |  
|Cash flows from financing activities:                                                      |  |      |             |   |      |   |            |  
|Capital contributions from partners                                                        |  |      |            |   |      |   | 27,450,000 |  
|Cash distributions to partners                                                             |  |      | (6,440,825  | ) |      |   |           |  
|                                                                                           |  |      |             |   |      |   |            |  
|Net cash provided by (used in) financing activities                                        |  |      | (6,440,825  | ) |      |   | 27,450,000 |  
|                                                                                           |  |      |             |   |      |   |            |  
|Net (decrease) and increase in cash and cash equivalents                                   |  |      | (9,535,451  | ) |      |   | 25,833,663 |  
|Cash and cash equivalents, beginning of period                                             |  |      | 10,630,997  |   |      |   |           |  
|                                                                                           |  |      |             |   |      |   |            |  
|Cash and cash equivalents, end of period                                                   |  | $    | 1,095,546   |   |      | $ | 25,833,663 |  
|                                                                                           |  |      |             |   |      |   |            |  



The accompanying notes
are an integral part of the financial statements.



5



---

##### Table of Contents



Mewbourne Energy Partners 04-A, L.P.



STATEMENT OF CHANGES IN PARTNERS CAPITAL

For the nine months ended September 30, 2005

(Unaudited)



|                              |  |                 |            |   |                 |   |           |       |  |   |            |  
|----------------------------- |  | --------------- | ---------- | - | --------------- | - | --------- | ----- |  | - | ---------- | -
|                              |  | GeneralPartners |            |   | LimitedPartners |   |           | Total | 
|Balance at December 31, 2004  |  | $               | 25,327,364 |   |                 | $ | 2,571,329 |       |  | $ | 27,898,693 |  
|Cash distributions            |  |                 | (5,847,196 | ) |                 |   | (593,629  | )     |  |   | (6,440,825 | )
|Net income                    |  |                 | 6,018,196  |   |                 |   | 610,990   |       |  |   | 6,629,186  |  
|                              |  |                 |            |   |                 |   |           |       |  |   |            |  
|Balance at September 30, 2005 |  | $               | 25,498,364 |   |                 | $ | 2,588,690 |       |  | $ | 28,087,054 |  
|                              |  |                 |            |   |                 |   |           |       |  |   |            |  



The accompanying notes
are an integral part of the financial statements.



6



---

##### Table of Contents

Mewbourne Energy Partners 04-A, L.P.



NOTES TO FINANCIAL STATEMENTS

(Unaudited)



|1. | Accounting Policies
|-- | -------------------



Reference is hereby made to the Partnerships Annual Report on Form 10-K for 2004, which contains a summary of significant accounting policies followed by the partnership in the preparation of its financial
statements. These policies are also followed in preparing the quarterly report included herein.



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, results of operations, cash flows
and partners capital for the periods presented. The results of operations for the interim periods are not necessarily indicative of the final results expected for the full year.



|2. | Accounting for Oil and Gas Producing Activities
|-- | -----------------------------------------------



Mewbourne Energy Partners 04-A, L.P., (the Partnership), a Delaware limited partnership is engaged primarily in oil and gas development and production in
Texas, Oklahoma, and New Mexico, and was organized on January 27, 2004. The offering of limited and general partnership interests began June 10, 2004 as a part of an offering registered under the name Mewbourne Energy Partners 04-05
Drilling Programs, (the Program), and concluded August 20, 2004, with total investor contributions of $30,000,000 originally being sold to 1,118 subscribers of which $27,235,000 were sold to 1,022 subscribers as general partner
interests and $2,765,000 were sold to 96 subscribers as limited partner interests.



The Partnership follows the full-cost method of accounting for its oil and gas activities. Under the full-cost method, all productive and non-productive costs incurred in the acquisition, exploration and development of oil and gas
properties are capitalized. Depreciation, depletion and amortization of oil and gas properties subject to amortization is computed on the units-of-production method based on the proved reserves underlying the oil and gas properties. At
September 30, 2005 all capitalized costs were subject to amortization, while at September 30, 2004, approximately $2.2 million of capitalized costs were excluded from amortization. Proceeds from the sale or other disposition of properties
are credited to the full cost pool. Gains and losses on the sale or other disposition of properties are not recognized unless such adjustments would significantly alter the relationship between capitalized costs and the proved oil and gas reserves.
Capitalized costs are subject to a quarterly ceiling test that limits such costs to the aggregate of the present value of future net cash flows of proved reserves and the lower of cost or fair value of unproved properties.



7



---

##### Table of Contents

|3. | Asset Retirement Obligations
|-- | ----------------------------



In accordance with Financial Accounting Standards Board Statement No. 143, Accounting for Asset Retirement Obligations, the Partnership has recognized an
estimated liability for future plugging and abandonment costs. The estimated liability is based on historical experience and estimated well life. The liability is discounted using the credit-adjusted risk-free rate. Revisions to the liability could
occur due to changes in well plugging and abandonment costs or well useful lives, or if federal or state regulators enact new well restoration requirements. The Partnership recognizes accretion expense in connection with the discounted liability
over the remaining life of the well.



A reconciliation of the
Partnerships liability for well plugging and abandonment costs for the nine months ended September 30, 2005, is as follows:



|                             |  |   |        
|---------------------------- |  | - | -------
|Balance, beginning of period |  | $ | 112,534
|Liabilities incurred         |  |   | 250,016
|Accretion expense            |  |   | 11,270 
|                             |  |   |        
|Balance, end of period       |  | $ | 373,820
|                             |  |   |        



|4. | Related Party Transactions
|-- | --------------------------



Mewbourne Development Corporation (MD) is managing general partner and Mewbourne Oil Company (MOC) is operator of oil and gas properties owned by the Partnership. Mewbourne Holdings, Inc. is the parent of both MD and
MOC. Substantially all transactions are with MD and MOC.



In the ordinary
course of business, MOC will incur certain costs that will be passed on to well owners of the well on which the costs were incurred. The partnership will receive their portion of these costs based upon their ownership in each well incurring the
costs. These costs are referred to as Operator charges and are standard and customary in the oil and gas industry. Operator charges include recovery of gas marketing costs, fixed rate overhead, supervision, pumping, and equipment furnished by the
Operator. Services and operator charges are billed in accordance with the program and partnership agreements.



In consideration for services rendered by MD in managing the business of the partnership, the partnership during each of the initial three years of the partnership will pay to MD a management fee in the amount equal
to 1% of the subscriptions by the investor partners to the partnership.



In
general, during any particular calendar year the total amount of administrative expenses allocated to the Partnership shall not exceed the greater of (a) 3.5% of the Partnerships gross revenue from the sale of oil and natural gas
production during each year (calculated without any deduction for operating costs or other costs and expenses) or (b) the sum of $50,000 plus .25% of the capital contributions of limited and general partners.



8



---

##### Table of Contents

The Partnership participates in oil and gas activities through a Drilling Program Agreement, the Program. The Partnership
and MD are parties to the Program agreement. The costs and revenues of the Program are allocated to MD and the Partnership as follows:



|                                                                                                       |  |             |   |  |     |  
|------------------------------------------------------------------------------------------------------ |  | ----------- | - |  | --- | -
|                                                                                                       |  | Partnership |   |  | MD  |  
|Revenues:                                                                                              |  |             |   |  |     |  
|Proceeds from disposition of depreciable and and depletable properties                                 |  | 70          | % |  | 30  | %
|All other revenues                                                                                     |  | 70          | % |  | 30  | %
|Costs and expenses:                                                                                    |  |             |   |  |     |  
|Sales commissions and due diligence fees (1)                                                           |  | 100         | % |  | 0   | %
|Organization and offering costs (2)                                                                    |  | 0           | % |  | 100 | %
|Lease acquisition costs (2)                                                                            |  | 0           | % |  | 100 | %
|Tangible and intangible drilling costs (2)                                                             |  | 100         | % |  | 0   | %
|Operating costs, reporting and legal expenses, general and administrative expenses and all other costs |  | 70          | % |  | 30  | %



|(1) | The Partnership will pay sales commissions and due diligence fees of 8% and 0.5%, respectively, of the capital contributions initially made by investor partners in exchange for
their respective interests.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | As noted above, pursuant to the Program, MD must contribute 100% of organization and offering costs and lease acquisition costs which will approximate 20% of total capital costs. To
the extent that organization and offering costs and lease acquisition costs are less that 20% of total capital costs, MD is responsible for tangible drilling costs until its share of the Programs total capital costs reaches approximately 20%.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



The Partnerships
financial statements reflect its respective proportionate interest in the Program.



9



---

##### Table of Contents

|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------



Liquidity and Capital Resources



Mewbourne Energy Partners 04-A, L.P. (the Partnership) was formed January 27, 2004. The offering of limited and general
partnership interests began June 10, 2004 and concluded August 20, 2004, with total investor contributions of $30,000,000.



The Partnership has acquired interests in oil and gas prospects for the purpose of development drilling. The Partnership participated in the drilling of 77 wells. 72
wells were productive and 5 wells were abandoned.



Future capital requirements
and operations will be conducted with available funds generated from oil and gas activities. No bank borrowing is anticipated. The Partnership had net working capital of $4,197,580 at September 30, 2005.



During the nine months ended September 30, 2005, the Partnership made cash distributions
to the investor partners in the amount of $6,440,825. The Partnership expects that cash distributions will continue during 2005 as additional oil and gas revenues are sufficient to produce cash flows from operations.



The sale of crude oil and natural gas produced by the Partnership will be affected by a
number of factors that are beyond the Partnerships control. These factors include the price of crude oil and natural gas, the fluctuating supply of and demand for these products, competitive fuels, refining, transportation, extensive federal
and state regulations governing the production and sale of crude oil and natural gas, and other competitive conditions. It is impossible to predict with any certainty the future effect of these factors on the Partnership.



10



---

##### Table of Contents

Results of Operations



Revenues and other income during the three months ended September 30, 2005 totaled
$5,977,577, and consisted of oil and gas sales of $5,969,746 and interest income of $7,831. Production volumes during the three months ended September 30, 2005 were approximately 5,055 bbls of oil and 693,795 mcf of gas at corresponding average
realized prices of $60.37 per bbl of oil and $8.16 per mcf of gas. Expenses totaling $2,553,246, consisting primarily of lease operating expenses in the amount of $135,314, production taxes in the amount of $549,022, and depreciation, depletion, and
amortization in the amount of $1,667,810 resulted in net income for the period of $3,424,331. The Partnerships oil and gas production should increase during the remainder of 2005 as production from recently completed wells is sold. Interest
income should decrease for the remainder of 2005 as available cash is utilized for drilling and equipping of wells. The Partnership expects that drilling and completion costs will decrease during the remainder of 2005 and that production costs,
operating expenses and depletion provisions will increase.



Revenues and other
income during the period from January 1, 2005 to September 30, 2005 totaled $12,483,922, and consisted of oil and gas sales of $12,388,841 and interest income of $95,081. Production volumes during the period ended September 30, 2005
were approximately 11,942 bbls of oil and 1,695,624 mcf of gas at corresponding average realized prices of $54.26 per bbl of oil and $6.92 per mcf of gas. Expenses totaling $5,854,736, consisting primarily of lease operating expenses in the amount
of $281,325, production taxes in the amount of $1,107,465, and depreciation, depletion, and amortization in the amount of $4,036,060 resulted in net income for the period of $6,629,186. The Partnerships oil and gas production should increase
during the remainder of 2005 as production from recently completed wells is sold. Interest income should decrease for the remainder of 2005 as available cash is utilized for drilling and equipping of wells. The Partnership expects that drilling and
completion costs will decrease during the remainder of 2005 and that production costs, operating expenses and depletion provisions will increase.



The Partnerships operations did not commence until the third quarter of 2004. No corresponding activities, therefore, occurred during the period from
January 27, 2004 (date of inception) through September 30, 2004.



11



---

##### Table of Contents

|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.



12



---

##### Table of Contents

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 Corporation
|                        |  |  |  |                                      |  | Managing General Partner         
|                        |  |  | 
|Date: November 14, 2005 |  |  |  |                                      |  |                                  
|                        |  |  |  |                                     
|                        |  |  |  |                                      |  | By:                               |  | /s/    ALAN CLARK    
|                        |  |  |  |                                      |  |                                   |  | Alan Clark, Treasurer



13



---

##### Table of Contents

INDEX TO EXHIBITS



|              |  |                                                                            
|------------- |  | ---------------------------------------------------------------------------
|EXHIBITNUMBER |  | DESCRIPTION                                                                
|              | 
|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.



14