Variable Interest Entities	6 Months Ended
Jun. 30, 2013
Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities Aircastle consolidates eight VIEs of which it is the primary beneficiary. The operating activities of these VIEs are limited to acquiring, owning, leasing, maintaining, operating and, under certain circumstances, selling the 18 aircraft discussed below. Securitizations In connection with Securitization No. 1, two of our subsidiaries, ACS Aircraft Finance Ireland plc (“ACS Ireland”) and ACS Aircraft Finance Bermuda Limited (“ACS Bermuda”) issued Class A-1 notes, and each has fully and unconditionally guaranteed the other’s obligations under the notes. In connection with Securitization No. 2, two of our subsidiaries, ACS Aircraft Finance Ireland 2 Limited (“ACS Ireland 2”) and ACS 2007-1 Limited (“ACS Bermuda 2”) issued Class A-1 notes and each has fully and unconditionally guaranteed the other’s obligations under the notes. ACS Bermuda and ACS Bermuda 2 are collectively referred to as the “ACS Bermuda Group.” Aircastle is the primary beneficiary of ACS Ireland and ACS Ireland 2 (collectively, the “ACS Ireland VIEs”), as we have both the power to direct the activities of the VIEs that most significantly impact the economic performance of such VIEs and we bear the significant risk of loss and participate in gains through Class E-1 Securities. Although Aircastle has not guaranteed the ACS Ireland VIEs debt, Aircastle wholly owns the ACS Bermuda Group which has fully and unconditionally guaranteed the ACS Ireland VIEs obligations. The activity that most significantly impacts the economic performance is the leasing of aircraft. Aircastle Advisor (Ireland) Limited (Aircastle’s wholly owned subsidiary) is the remarketing servicer and is responsible for the leasing of the aircraft. An Irish charitable trust owns 95% of the common shares of the ACS Ireland VIEs. The Irish charitable trust’s risk is limited to its annual dividend of $2 per VIE. At June 30, 2013, the assets of the two VIEs include 11 aircraft transferred into the VIEs at historical cost basis in connection with Securitization No. 1 and Securitization No. 2. The combined assets of the ACS Ireland VIEs as of June 30, 2013 are $325,611. The combined liabilities of the ACS Ireland VIEs, net of $72,068 Class E-1 Securities held by the Company, which is eliminated in consolidation, as of June 30, 2013 are $278,978. ECA Term Financings Aircastle, through various subsidiaries, each of which is owned by a charitable trust (such entities, collectively the “Air Knight VIEs”), entered into eleven different twelve-year term loans, which are supported by guarantees from Compagnie Francaise d’ Assurance pour le Commerce Exterieur, (“COFACE”), the French government sponsored export credit agency (“ECA”). These loans provided for the financing for eleven new Airbus Model A330-200 aircraft. In June 2011, we repaid one of these loans from the proceeds of the sale of the related aircraft. In June 2013, we repaid two of these loans from the proceeds of the sale of the related aircraft. We sold an additional aircraft in June 2013, and we posted cash, which is reflected in restricted cash and cash equivalents on the consolidated balance sheet, as collateral for the related term loan until we pay-off the loan or substitute an aircraft. At June 30, 2013, Aircastle had eight outstanding term loans with guarantees from COFACE. We refer to these COFACE-supported financings as “ECA Term Financings.” Aircastle is the primary beneficiary of the Air Knight VIEs, as we have the power to direct the activities of the VIEs that most significantly impact the economic performance of such VIEs and we bear the significant risk of loss and participate in gains through a finance lease. The activity that most significantly impacts the economic performance is the leasing of aircraft of which our wholly owned subsidiary is the servicer and is responsible for managing the relevant aircraft. There is a cross collateralization guarantee between the Air Knight VIEs. In addition, Aircastle guarantees the debt of the Air Knight VIEs. The only assets that the Air Knight VIEs have on their books are financing leases that are eliminated in the consolidated financial statements and deferred financing costs. The related aircraft, with a net book value as of June 30, 2013 were $585,646, are included in our flight equipment held for lease. The consolidated debt outstanding of the Air Knight VIEs as of June 30, 2013 is $515,034.

Variable Interest Entities

Aircastle consolidates eight VIEs of which it is the primary beneficiary. The operating activities of these VIEs are limited to acquiring, owning, leasing, maintaining, operating and, under certain circumstances, selling the 18 aircraft discussed below.

Securitizations

In connection with Securitization No. 1, two of our subsidiaries, ACS Aircraft Finance Ireland plc (“ACS Ireland”) and ACS Aircraft Finance Bermuda Limited (“ACS Bermuda”) issued Class A-1 notes, and each has fully and unconditionally guaranteed the other’s obligations under the notes. In connection with Securitization No. 2, two of our subsidiaries, ACS Aircraft Finance Ireland 2 Limited (“ACS Ireland 2”) and ACS 2007-1 Limited (“ACS Bermuda 2”) issued Class A-1 notes and each has fully and unconditionally guaranteed the other’s obligations under the notes. ACS Bermuda and ACS Bermuda 2 are collectively referred to as the “ACS Bermuda Group.”

Aircastle is the primary beneficiary of ACS Ireland and ACS Ireland 2 (collectively, the “ACS Ireland VIEs”), as we have both the power to direct the activities of the VIEs that most significantly impact the economic performance of such VIEs and we bear the significant risk of loss and participate in gains through Class E-1 Securities. Although Aircastle has not guaranteed the ACS Ireland VIEs debt, Aircastle wholly owns the ACS Bermuda Group which has fully and unconditionally guaranteed the ACS Ireland VIEs obligations. The activity that most significantly impacts the economic performance is the leasing of aircraft. Aircastle Advisor (Ireland) Limited (Aircastle’s wholly owned subsidiary) is the remarketing servicer and is responsible for the leasing of the aircraft. An Irish charitable trust owns 95% of the common shares of the ACS Ireland VIEs. The Irish charitable trust’s risk is limited to its annual dividend of $2 per VIE. At June 30, 2013, the assets of the two VIEs include 11 aircraft transferred into the VIEs at historical cost basis in connection with Securitization No. 1 and Securitization No. 2.

The combined assets of the ACS Ireland VIEs as of June 30, 2013 are $325,611. The combined liabilities of the ACS Ireland VIEs, net of $72,068 Class E-1 Securities held by the Company, which is eliminated in consolidation, as of June 30, 2013 are $278,978.

ECA Term Financings

Aircastle, through various subsidiaries, each of which is owned by a charitable trust (such entities, collectively the “Air Knight VIEs”), entered into eleven different twelve-year term loans, which are supported by guarantees from Compagnie Francaise d’ Assurance pour le Commerce Exterieur, (“COFACE”), the French government sponsored export credit agency (“ECA”). These loans provided for the financing for eleven new Airbus Model A330-200 aircraft. In June 2011, we repaid one of these loans from the proceeds of the sale of the related aircraft. In June 2013, we repaid two of these loans from the proceeds of the sale of the related aircraft. We sold an additional aircraft in June 2013, and we posted cash, which is reflected in restricted cash and cash equivalents on the consolidated balance sheet, as collateral for the related term loan until we pay-off the loan or substitute an aircraft. At June 30, 2013, Aircastle had eight outstanding term loans with guarantees from COFACE. We refer to these COFACE-supported financings as “ECA Term Financings.”

Aircastle is the primary beneficiary of the Air Knight VIEs, as we have the power to direct the activities of the VIEs that most significantly impact the economic performance of such VIEs and we bear the significant risk of loss and participate in gains through a finance lease. The activity that most significantly impacts the economic performance is the leasing of aircraft of which our wholly owned subsidiary is the servicer and is responsible for managing the relevant aircraft. There is a cross collateralization guarantee between the Air Knight VIEs. In addition, Aircastle guarantees the debt of the Air Knight VIEs.

The only assets that the Air Knight VIEs have on their books are financing leases that are eliminated in the consolidated financial statements and deferred financing costs. The related aircraft, with a net book value as of June 30, 2013 were $585,646, are included in our flight equipment held for lease. The consolidated debt outstanding of the Air Knight VIEs as of June 30, 2013 is $515,034.