Exhibit 21

Subsidiaries of Aircastle Limited
As of December 31, 2006

			Name of Subsidiary			Jurisdiction
1			Aircastle Advisor LLC			Delaware
2			Aircastle Advisor (International) Limited			Bermuda
3			Aircastle Advisor (Ireland) Limited			Ireland
4			Aircastle Bermuda Holding Limited			Bermuda
5			Aircastle Bermuda Holding II Limited			Bermuda
6			Aircastle Bermuda Holding III Limited			Bermuda
7			Aircastle Bermuda Holding IV Limited			Bermuda
8			Aircastle Bermuda Holding V Limited			Bermuda
9			Aircastle Bermuda Holding VI Limited			Bermuda
10			Aircastle Bermuda Holding VII Limited			Bermuda
11			Aircastle Bermuda Holding VIII Limited			Bermuda
12			Aircastle Bermuda Holding IX Limited			Bermuda
13			ABH 10 Limited			Bermuda
14			ABH 11 Limited			Bermuda
15			ABH 12 Limited			Bermuda
16			Aircastle Bermuda Securities Limited			Bermuda
17			ACS Aircraft Finance Bermuda Limited			Bermuda
18			ACS Aircraft Finance Ireland PLC			Ireland
19			ACS Aircraft Leasing (Ireland) Limited			Ireland
20			Aircastle Holding Corporation Limited			Bermuda
21			Aircastle Ireland Holding Limited			Ireland
22			Aircastle Ireland No. 1 Limited			Ireland
23			Aircastle Ireland No. 2 Limited			Ireland
24			Aircastle Ireland No. 3 Limited			Ireland
25			Aircastle Investment Holdings Limited			Bermuda
26			Aircastle Investment Holdings 2 Limited			Bermuda
27			Aircraft MSN 313 LLC			Delaware
28			Aircraft MSN 1006 LLC			Delaware
29			Aircraft MSN 1012 LLC			Delaware
30			Aircraft MSN 24975 LLC			Delaware
31			Aircraft MSN 27826 LLC			Delaware
32			Aircraft MSN 28038 LLC			Delaware
33			Aircraft MSN 28213 LLC			Delaware
34			Aircraft MSN 28414 LLC			Delaware
35			Aircraft MSN 28867 LLC			Delaware
36			Aircraft MSN 29045 LLC			Delaware
37			Aircraft MSN 29046 LLC			Delaware
38			Aircraft MSN 29329 LLC			Delaware
39			Aircraft MSN 35233 LLC			Delaware
40			Constellation Aircraft Leasing (France) SARL			France
41			Constitution Aircraft Leasing (Ireland) Limited			Ireland
42			Constitution Aircraft Leasing 2 (Ireland) Limited			Ireland
43			Emer Aircraft Leasing (Ireland) Limited			Ireland
44			Endeavor Aircraft Leasing (Sweden) AB			Sweden
45			Endeavor Aircraft Leasing (Sweden) 2 AB			Sweden
46			Enterprise Aircraft Leasing (France) SARL			France
47			Intrepid Aircraft Leasing (France) SARL			France
48			Perdana Aircraft Leasing (Labuan) Limited			Labuan