# Determine Passenger Service Availability

LogicalFunction

In-Flight Entertainment System > In-Flight Entertainment System > Logical Architecture > Logical Functions > Root Logical Function > IFE System > Manage Passenger Services Lifecycle > Determine Passenger Service Availability

This function is responsible for computing the availability of passenger services based on the authorization scheme (airline business strategy) and the aircraft contraints.

## Incoming Functional Exchanges

Exchange | Source | Description | Allocated Exchange Items
--- | --- | --- | ---
Passenger Service Authorization Profile | Set Passenger Service Authorization |  |
IFE Operating Profile | Determine Operating Profiles |  |
Available Passenger Service Request | Display Homepage on Seat TV |  |

## Outgoing Functional Exchanges

Exchange | Target | Description | Allocated Exchange Items
--- | --- | --- | ---
Available Passenger Services List | Display Homepage on Seat TV |  |
Available Passenger Services List | Start/Resume Service |  |

## Realized Elements

- Determine Service Availability

## Realizing Elements

- Determine Passenger Service Availability

## Diagrams displaying "Determine Passenger Service Availability"

- [LDFB] [CTX] Manage Passenger Services Lifecycle
- [LAB] [BUILD] All Components, Functions, CEs, FEs
- [LAB] [BUILD] Template
- [FS] Handle Cabin Decompression Event
- [FS] Determine Passenger Service Availability
- [LFBD] All Functions