CBT-OIS/NSS

Question 1

What do OIS and NSS stand for?

Answer 1

Onboard Information System
Network Server System

Question 2

What is the relationshiop of NSS to OIS?

Answer 2

NSS is the hardware that hosts the OIS (Softwares)

Question 3

What is the OIS split into?

Application domains

Answer 3

• Avionics
• Flight Ops
• Cabin and Comm

Question 4

What is the philosophy of “Avionics World” and “Open World”?

Answer 4

The “avionics world” links aircraft systems together in a secured environment. e.g. ACDN

The “open world” is like an extension of the aircraft systems to the outside for airline operations and users e.g. NSS

They are separated by a firewall

Question 5

What is the “Open World Diode” and its function?

OWD

Answer 5

It allows a one way data flow from the Avionics domain to other IOS domains to prevent information corruption

Question 6

What does the Avionics Application Domain host on the OIS?

Dark Green

Answer 6

• Communication through AOC via ACARS
• Maintenance through OMS Applications
• Documentation (CDL, MEL, CCOM …)
• Servicing (refueling tool)

Airline Operational Control (AOC)

Aircraft Communication Addressing and Reporting System (ACARS)
Onboard Maintenance System (OMS)

Question 7

What does the Flight Ops Application Domain host on the OIS?

Light Green

Answer 7

• Performance (TOPA, IFPA, LDPA, WBA)
• Docs (FCOM, MEL, AFM…)
• Mission (EFF,FFU, Nav Charts…)

TOPA (Takeoff Performance App)
EEF (Electronic Flight Folder)
FFU (Flight Follow-up)

Question 8

How does the pilot interface with the OIS?

Answer 8

Using the OIT which includes a screen, keyboard, additional key panel

Onboard Information Terminal

Question 9

What is the function of the NSS MASTER switch on the OVHD panel?

Answer 9

Cut off NSS power if smoke is detected in the upper avionics bay

Question 10

What do the “GATELINK” and “CAB DATA to NSS” Switches do?

Answer 10

They disconnect the NSS from either the Cabin Comm domain (blue) or cutt of wireless communications at the gate

Question 11

What is the interface with OIS and maintenance personel?

Answer 11

OMT and FAP

Onboard Maintenance Terminal

Question 12

What hardware does the Avionics domain have? (Dark Green)

Answer 12

• Two redundant servers and two routers that manage data exchange with OMT/OIT/NSS/HMI
• Printer

Human Machine Interfaces (HMIs)

Question 13

The NSS DATA TO AVNCS pb sw allows:

Answer 13

In pressed-in position (normal position), data to flow in both directions between the OPEN WORLD and AVIONICS WORLD, or

In OFF position (pb released) data to flow from the AVIONICS WORLD to the OPEN WORLD only

Question 14

What hardware does the Flight Ops domain use? (light green)

Answer 14

• CAPT and F/O laptops plus an additional one for backup
• router which manages data exchange between AVIONICS WORLD, NSS and HMIs
• Printer