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 |
|
