July 31, 2006


BY FACSIMILE AND BY EDGAR
- -------------------------
Pamela A. Long
Assistant Director
Securities and Exchange Commission
Division of Corporation Finance
Mail Stop 7010
100 F Street N.E.
Washington, D.C. 20549

         RE:      Aircastle Limited
                  Registration Statement on Form S-1
                  (File No. 333-134669)

Dear Ms. Long:

         On behalf of Aircastle Limited, a Bermuda exempted company (the
"Company"), set forth below in this letter are the Company's responses to the
comments (the "Comments") of the staff (the "Staff") of the Securities and
Exchange Commission (the "Commission") in the Staff's letter of July 28, 2006
(the "Comment Letter").

         As per the Company's telephone call (the "Call") with Nudrat Salik
(Staff Accountant) on July 28, 2006, the Company will supplementally provide the
Commission with certain pages (the "Changed Pages") of the above-referenced
Registration Statement (the "Registration Statement"), marked to show changes,
in response to the Comments, from Amendment No. 2 to the Registration Statement
filed with the Commission on July 25, 2006, along with a revised draft of the
Exhibit 5.1 opinion.

         For the convenience of the Staff, the Company has restated in this
letter each of the Comments in the Comment Letter and numbered each of the
responses to correspond with the numbers of the Comments in the Comment Letter.
Capitalized terms used and not defined have the meanings given in the
Registration Statement. All references to page numbers and captions correspond
to the page numbers and captions in the preliminary prospectus included in the
Registration Statement.

General
- -------

     1.   Please be advised that we are still awaiting responses to comments 49
          and 52 of our letter dated June 28, 2006.

               The Company respectfully informs the Staff that Messrs. Allen,
          Hacker, Kukral and Merriman have been identified as independent
          directors and will include this information on page 97 in the final
          prospectus.





Aircastle Limited
July 31, 2006
Page 2 of 8



               The Company respectfully informs the Staff that it does not, and
          will not, have a separate policy or procedures in place prior to the
          completion of the offering for reviewing or pre-approving transactions
          with directors, officers or affiliates. However, the Company's Code of
          Business Conduct and Ethics for its employees, officers and directors
          contains a stated policy with respect to such matters, which reads as
          follows:

               "CONFLICTS OF INTEREST

               A conflict of interest occurs when your private interests
               interfere, or even appear to interfere, with the interests of the
               Company. A conflict situation can arise when you take actions or
               have interests that make it difficult, or even appear to make it
               difficult, for you to perform your Company work objectively and
               effectively. Your obligation to conduct the Company's business in
               an honest and ethical manner includes the ethical handling of
               actual, apparent and potential conflicts of interest between
               personal and business relationships. This includes full
               disclosure of any actual, apparent or potential conflicts of
               interest as set forth below.

               Further, under Bermuda law, if a director has an interest in a
               material contract or proposed material contract with the Company
               or any of its subsidiaries or has a material interest in any
               person that is party to such a contract or proposed contract,
               that director must disclose the nature of that interest at the
               first opportunity either at a meeting of the directors or in
               writing to the other directors.

               Special rules apply to executive officers and directors who
               engage in conduct that creates an actual, apparent or potential
               conflict of interest. Except as provided in the Company's
               Bye-laws, before engaging in any such conduct, executive officers
               and directors must make full disclosure of all facts and
               circumstances to the General Counsel, who shall inform and seek
               the prior approval of the Audit Committee of the Board of
               Directors.

               Although we cannot list every conceivable conflict, what follows
               are some common examples of actual, apparent and potential
               conflicts of interest, and to whom employees (other than
               executive officers, who are discussed in the paragraph above)
               should make disclosures. If you are involved in a conflicts
               situation that is not described below or have any questions about
               whether a particular activity would be a conflicts situation, you
               should discuss your particular situation with the General
               Counsel."


Board of Directors, page 96
- ---------------------------

     2.   Please identify the members of your board of directors who have been
          designated by the Fortress shareholders. In addition, please cross
          reference the disclosure in the section entitled "Designation and
          Election of Directors" on page 107.




Aircastle Limited
July 31, 2006
Page 3 of 8



               The disclosure on page 96 will be revised in the final prospectus
          to identify the members of the board designated by the Fortress
          shareholders and provide a cross-reference to the section entitled
          "Designation and Election of Directors" on page 107.

Financial Statements
- --------------------

Unaudited Consolidated Pro Forma Financial Statements, page F-1
- ---------------------------------------------------------------

     3.   On pages 7 and 98, you state that restricted shares will be granted to
          certain of your directors upon consummation of this offering. Tell us
          what consideration was given to including the impact of these
          restricted shares in your pro forma financial statements.

               The Company respectfully informs the Staff that the restricted
          shares referred to in the Staff's comment are not being granted as
          part of, or in contemplation of, the offering. Such shares are being
          granted as part of the Company's general compensation of its newly
          appointed directors. As a result, the Company believes that it is not
          necessary to include such shares in the pro forma financial
          statements.

Note 1. Adjustments to Pro Forma Consolidated Statements of Operations and
- --------------------------------------------------------------------------
Balance Sheet
- -------------

(A)  Interest Expense, page F-6
- -------------------------------

     4.   We note your response to prior comment 6 and the additional
          disclosures provided. It remains unclear how you arrived at the
          adjustment amounts for the elimination of interest expense due to
          extinguishments of existing debt. For example, your disclosure
          indicates that $380.6 million of debt was outstanding on Credit
          Facility No. 1 as of December 31, 2005 and that the effective interest
          rate for these borrowings for 2005 was 5.87%; these amounts do not
          appear to arrive at your adjustment amount. Please provide additional
          disclosures, including the weighted average debt balance outstanding
          during each period, so that it is clear how you computed the
          adjustment amounts.

               The disclosure on page F-6 will be revised in the final
          prospectus in response to the Staff's comment.

(B)  Income Taxes, page F-6
- ---------------------------

     5.   We note your response to prior comment 7 and the additional
          disclosures provided. It remains unclear how you computed the
          adjustments to your income taxes. Please provide a summary of the
          computation used to arrive at




Aircastle Limited
July 31, 2006
Page 4 of 8



          the adjustment amounts, which should include the assumed weighted
          average tax rate.

               In response to the Staff's comment, the Company is supplementally
          providing to the Staff a summary of its calculation of income tax
          adjustments, attached hereto as Annex A. Since the pro forma
          adjustments to the tax provision are $95,000 and $101,000 for the year
          ended December 31, 2005 and the three months ended March 31, 2006,
          respectively, the Company respectfully does not believe that the
          foregoing information is helpful to the reader of the Company's pro
          forma financial information and therefore proposes not to include such
          additional disclosure in the final prospectus.

(C)  Pro Forma Outstanding Shares, page F-7
- -------------------------------------------

     6.   Please help us understand why there are no adjustments related to the
          offering to weighted average shares outstanding for the year ended
          December 31, 2005. Otherwise, please revise your pro forma outstanding
          shares.

               The Company respectfully informs the Staff that the Company's pro
          forma financial statements, as adjusted, have been adjusted to reflect
          the use of a portion of the net proceeds from the offering to repay in
          full Credit Facility No. 2. There are no adjustments related to the
          offering to weighted average shares outstanding for the year ended
          December 31, 2005 because there was no debt outstanding on Credit
          Facility No. 2 during 2005. Credit Facility No. 2 was not executed
          until March 2006. The Company believes the disclosures provided in
          footnote L allow the reader to determine why no adjustment to weighted
          average shares outstanding are required for the year ended December
          31, 2005.

     7.   Please disclose how you computed the 427,273 shares, which are being
          added to arrive at the pro forma, as adjusted weighted average shares
          outstanding for the quarter ended March 31, 2006.

               In response to the Staff's comment, the Company is supplementally
          providing to the Staff a summary of its calculation of adjustments as
          a result of the 427, 273 shares, attached hereto as Annex B. Since the
          information necessary to calculate the adjustment is included
          elsewhere in the prospectus, the Company proposes not to include such
          additional information in the final prospectus.

     8.   Please disclose what consideration was given to the capital
          transactions discussed in adjustment (J) in arriving at your pro forma
          outstanding share amounts.



Aircastle Limited
July 31, 2006
Page 5 of 8



               The Company respectfully informs the Staff that it did not give
          effect to either of the capital transactions discussed in footnote (J)
          in determining the pro forma outstanding share amounts used to
          determine pro forma earnings per share, after considering the relevant
          facts and circumstances of each transaction, because the Company
          believes that it would not present a fair picture of its historical
          financial statements on a pro forma basis. The $36.9 million that was
          returned to the Fortress shareholders in exchange for the cancellation
          of 3,693,200 shares was initially received in February 2006. This
          amount was not used to repay outstanding indebtedness, but was used to
          fund additional aircraft acquisitions and for working capital purposes
          until it was returned on July 21, 2006. The purchase of 277,000 shares
          by employees and a director nominee occurred in the second quarter of
          2006, and the proceeds received were not used to repay outstanding
          debt, but rather were used for general working capital purposes. The
          Company respectfully does not believe that the foregoing information
          is helpful to the reader of the Company's financial statements and
          therefore proposes not to include such information in the final
          prospectus.

Exhibit 5.1
- -----------

     9.   The qualifications set forth in clauses (b), (d), and (g) of the third
          paragraph of the opinion are inappropriate. Please have counsel revise
          its opinion accordingly.


               The Company will refile the Exhibit 5.1 opinion, as modified by
          counsel in response to the Staff's comment, in a subsequent amendment
          to the Registration Statement prior to the Company's request for
          acceleration.

                                    * * * * *

         As the Company believes that the changes represented by the Changed
Pages have not resulted in, and do not constitute, a material change in the
disclosure, the Company, consistent with its stated plan discussed during the
Call, intends to implement such changes in a final prospectus to be filed
pursuant to Rule 424(b). In addition, the Company believes that no additional or
revised information will be included in the final prospectus (other than pricing
related information) that would be material to an investor's decision to
purchase the Company's common shares, or that any such information would cause
the disclosure in the circulated preliminary prospectus to be inaccurate or
inadequate in any material respect.

         Please contact the undersigned at (212) 735-3050 should you require
further information or have any questions.





Aircastle Limited
July 31, 2006
Page 6 of 8




                                                  Very truly yours,


                                                  /s/ Joseph A. Coco

                                                  Joseph A. Coco







cc:       Mr. David Walton
          Chief Operating Officer and General Counsel
          c/o Aircastle Advisor LLC
          300 First Stamford Place, 5th Floor
          Stamford, CT 06902

          Edward F. Petrosky
          J. Gerard Cummins
          Sidley Austin LLP
          787 Seventh Avenue
          New York, NY 10019









Aircastle Limited
July 31, 2006
Page 7 of 8



                                                                         ANNEX A
                                                                         -------

The table below summarizes the computation used to arrive at the adjustment
amounts, including the estimated tax rates:




                                           Year Ended December 31, 2005           Three Months Ended March 31, 2006
                                         ---------------------------------        ---------------------------------
($ thousands)                            Ireland       Bermuda      Total          Ireland      Bermuda      Total
                                         -------       -------     -------         -------      -------     -------

Increase in interest expense             $   378       $ 1,337     $ 1,715         $   696      $   176     $   872
Effective tax rate                         12.5%          3.6%        5.5%           12.5%         8.0%       11.6%
Increase (decrease) in tax expenses      $    47       $    48     $    95         $    87      $    14     $   101



Our Bermuda subsidiaries incur no Bermuda income tax expense. However, they are
subject to U.S. federal and state taxes to the extent they own aircraft that fly
into the U.S. The effective tax rates charged on U.S. source income in any
period depends on various factors, including but not limited to the volume of
U.S. traffic, the amount of traffic in particular states and the tax rates in
effect in those states and the satisfaction of certain safe harbor provision in
U.S. tax regulations that can lower the tax rate imposed on U.S. source income.






Aircastle Limited
July 31, 2006
Page 8 of 8



                                                                         ANNEX B
                                                                         -------


The table below provides the computation of the 427,273 shares which are being
added to arrive at the pro forma, as adjusted weighted average shares
outstanding for the quarter ended March 31, 2006:


Debt outstanding on Credit Facility #2 at March 31, 2006              $8,554,000
Calculation of net proceeds per share
- -------------------------------------
Estimated price per share (mid point of IPO range)         $ 22.00
Less: 7% Underwriters' discount                              (1.54)
Less: Estimated expenses per share
      ($4 million/9,090,000 shs.)                            (0.44)
                                                           -------
Net IPO proceeds per share                                 $ 20.02    $    20.02
                                                                      ----------
Pro forma shares to be issued to repay debt                              427,273
                                                                      ==========