FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Kriedberg Michael   2. Issuer Name and Ticker or Trading Symbol Aircastle LTD [AYR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Commercial Officer (Last) (First) (Middle) C/O AIRCASTLE ADVISOR LLC, 201 TRESSER BLVD, 4TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 03/31/2018 (Street) STAMFORD, CT 06901 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 03/31/2018   M   21,044 A $ 0 214,401 D   Common Shares 03/31/2018   F(1)   7,143 D $ 19.86 (2) 207,258 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(3)

03/31/2018

M

21,044

(3)

(3)

Common Shares

21,044

(3)

42,087

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Kriedberg Michael C/O AIRCASTLE ADVISOR LLC 201 TRESSER BLVD, 4TH FLOOR STAMFORD, CT 06901			Chief Commercial Officer

Signatures

/s/ Michael L. Kriedberg		04/03/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Common Shares withheld by the Company pursuant to an irrevocable election made by the reporting person under the Amended and Restated Aircastle Limited 2014 Omnibus Incentive Plan (the "Plan"), with proceeds of such repurchase being applied to the reporting person's federal and state tax obligations arising from the vesting, on March 31, 2018, of performance-based restricted share units ("RSUs") granted under the Plan, which converted into Common Shares on a one-for-one basis.
(2)	The number of shares withheld is based on the closing price on March 29, 2018, the last trading day preceding the date such shares were withheld, as provided in the Plan.
(3)	The reporting person was granted 63,131 RSUs on March 31, 2017. On February 9, 2018, the Compensation Committee of the Board of Directors of Aircastle Limited certified satisfaction of the applicable performance condition. Each RSU represent a contingent right to acquire one Common Share, subject to ratable vesting on each of March 31, 2018, March 31, 2019 and March 31, 2020.

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