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A system for controlling currency exchange and merchandise sales on commercial airline flights includes a point-of-sale (POS) computer for receiving currency and merchandise inventory information preflight and for recording transactions in-flight. Data is exchanged between the POS computer and a cas

A system for controlling currency exchange and merchandise sales on commercial airline flights includes a point-of-sale (POS) computer for receiving currency and merchandise inventory information preflight and for recording transactions in-flight. Data is exchanged between the POS computer and a cash/currency processing computer (CPC) for reconciling preflight and post-flight inventories and for generating reports for use by the airlines, merchandise vendors and currency exchange service providers. A control method includes the steps of determining currency and merchandise inventories preflight, recording transactions in-flight and reconciling and reporting transactions post-flight.

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What is claimed is: 1. A system for controlling currency exchange and merchandise sales on an aircraft with a passenger load, which comprises: a) a service cart; b) a security drawer assembly removably mounted in the service cart, wherein the security drawer assembly includes: a body having a sleev

What is claimed is: 1. A system for controlling currency exchange and merchandise sales on an aircraft with a passenger load, which comprises: a) a service cart; b) a security drawer assembly removably mounted in the service cart, wherein the security drawer assembly includes: a body having a sleeve with an open end and a passage open at said end; a body-mounting mechanism connected with said body for removably mounting the body within the service cart; and a security drawer movably mounted in the sleeve, the security drawer having, when the security drawer assembly is mounted in the service cart: a locked, closed position such that the body cannot be removed from the service cart when the security drawer is in the locked, closed position; and an unlocked, open position such that an interior of the security drawer may be accessed when the security drawer is in the unlocked, open position; c) a currency inventory including at least two different currencies stored in the interior of said security drawer such that the currency inventory may be accessed when the security drawer is in the unlocked, open position; d) an inventory of merchandise stowed in the service cart; e) the service cart being stowable on the aircraft and movable through the cabin thereof; f) a point-of-sale computer receiving currency and merchandise inventory data; and g) said point-of-sale computer being operable by a flight attendant to record transactions with said merchandise and said currency. 2. The system according to claim 1, which includes: a) a processing computer adapted to receive transactional data from said point-of-sale computer. 3. The system according to claim 2, which includes: a) a data card adapted to receive inventory data from said processing computer and transferring same to said point-of-sale computer. 4. The system according to claim 3, which includes: a) said data card comprising a currency data card; and b) a merchandise data card adapted to receive data pertaining to said merchandise inventory and transferring same to said point-of-sale computer. 5. The system according to claim 4, which includes: a) said point-of-sale computer recording currency exchange and merchandise sales transaction data on said currency and merchandise data cards respectively for transferring same to said processing computer. 6. A method of controlling currency exchange and merchandise sales on a passenger flight with a service cart located in the aircraft cabin, which comprises the steps of: a) providing a removable security drawer assembly in said service cart, wherein the security drawer assembly includes: a body having a sleeve with an open end and a passage open at said end; a body-mounting mechanism connected with said body for removably mounting the body within the service cart; and a security drawer movably mounted in the sleeve, the security drawer having, when the security drawer assembly is mounted in the service cart: a locked, closed position in said service cart such that the body cannot be removed from the service cart when the security drawer is in the locked, closed position; and an unlocked, open position such that an interior of the security drawer may be accessed when the security drawer is in the unlocked, open position; b) providing an inventory of currency in the interior of said security drawer such that the currency inventory may be accessed when the security drawer is in the unlocked, open position; c) providing an inventory of merchandise in said service cart; d) providing a point-of-sale computer; and e) loading said point-of-sale computer with data corresponding to said currency inventory and said merchandise inventory. 7. The method according to claim 6, which includes the additional step of: a) determining a pre-flight currency inventory based on historical currency transaction data from previous flights. 8. The method according to claim 6, which includes the additional step of: a) determining a pre-flight merchandise inventory for the service cart based on historical merchandise sales data. 9. The method according to claim 7, which includes the additional steps of: a) loading currency inventory data on a data card pre-flight with a cash/currency processing computer; b) installing said card in said point-of-sale computer; and c) downloading data from said data card to said point-of-sale computer. 10. The method according to claim 6, which includes the additional steps of: a) recording currency exchange and merchandise sales transactions on said point-of-sale computer in-flight; b) inventorying said currency and merchandise inventories post-flight; c) reconciling the post-flight currency and merchandise inventories with the currency and merchandise data on the point-of-sale computer; and d) generating an end-of-flight report of currency and merchandise transactions during said flight. 11. The method according to claim 6, which includes the additional steps of: a) maintaining foreign currency exchange information for multiple airlines; b) programming said point-of-sale computer with foreign currency exchange information specific to a particular airline. 12. The method according to claim 6, which includes the additional steps of: a) maintaining foreign currency exchange information for multiple airline flights; and b) programming said point-of-sale computer with foreign currency exchange information specific to a particular flight. 13. The method according to claim 6, which includes the additional steps of: a) maintaining multiple foreign currency exchange rates; and b) programming said point-of-sale computer with said foreign currency exchange rates. 14. The method according to claim 13, which include the additional steps of: a) maintaining flight crew foreign currency exchange discount rates; and b) programming said point-of-sale computer with said flight crew foreign currency exchange discount rates. 15. The method according to claim 6, which includes the additional steps of: a) maintaining information specific to a cash bag for a particular flight; and b) transferring to a currency data card data pertaining to said cash bag for transfer to said point-of-sale computer. 16. The method according to claim 6, which includes the additional steps of; a) providing the flight crew with currency exchange rate information; and b) the flight crew announcing to the passengers the currency exchange rate information. 17. The method according to claim 15, which includes the additional step of; a) reconciling end-of-flight contents of the cash bag with the processing computer. 18. The method according to claim 6, which includes the additional steps of; a) conducting a physical inventory of the currency in the security drawer and the merchandise in the cart; b) reconciling the physical inventory with currency exchange and merchandise sales transactions recorded by said point-of-sale computer. 19. The method according to claim 6, which includes the additional step of providing a flight summary report identifying currency, travelers' check and credit card transactions. 20. The method according to claim 6, which includes the additional steps of: a) providing a transaction detail report of currency exchange transactions; and b) providing a transaction detail report of merchandise sales transactions. 21. The method according to claim 20, wherein said merchandise comprises duty-free merchandise. 22. The method according to claim 6, which includes the additional step of providing an over and short (exceptions) report of overages and shortages with respect to said remaining currency and merchandise inventories. 23. The method according to claim 6, which includes the additional step of creating a transactional history file of said currency exchange and merchandise sale transactions. 24. The method according to claim 6, which includes the additional step of creating an archive file of data from currency exchange and merchandise sales transactions.