Flight Management System (FMS) Flashcards
FMS does what? and serves as an aid for?
Produces aircraft position
Provides data for cockpit displays and flight control system
Serves as an aid to:
- Flight planning
- Navigation
- Performance
- Database Management
- Redundancy Management
The flight management system interfaces with?
- GPS - airplane position and navigation functions
- IRS - airplane position and navigation functions
- PFD - display navigation guidance
- MFD - display navigation data
- VOR/DME - navigation functions
- MCDU - interface between FMS and crew
Does NOT interface with the ADF
What are the four categories of FMS Flight plans?
- Active
- Stored
- Lateral
- Vertical
For a flight plan to be active, it must contain what? When is it considered to be CLOSED?
- FROM waypoint (poss the origin)
- TO waypoint
- Destination
Considered to be CLOSED when last waypoint = destination
STORED FLIGHT PLANS are what? What must they have?
Flight plan stored in the FMS database for future use.
Must have:
- Departure Airport
- Destination Airport
Can be retrieved:
- Selecting list of stored flight plans (NAV - FLT PLN LIST)
- Entering departure and destination airport on RTE page - FLT PLN list automatically displayed
LATERAL Flight Plan what is the default origin? Where does it end?
Nearest Airfield within 3 miles
Ends at the destination
VERTICAL Flight Plan is what? Where is the vertical profile information displayed on? What is VTA (Vertical Track Alert) and when is it issued?
Vertical Profile calculated based on PERF INIT data and coded altitude constraints
Vertical Profile information displayed on:
- PFD
- MFD
- MCDU, PROG - PROG 2/3 - VNAV Data
VTA
- Issued 60 secs before FMS climb/descent
- 1000ft before level off altitude
FMS Databases are?
- Navigation - 28 day update cycle, waypoints/procedures for flight planning, Aids tuning of NAVAIDS
- Aircraft/Performance - Airplane-specific performance parameters
- Custom - Pilot entered, waypoints and stored flight plans, NOT UPDATED on a scheduled basis
FMS Navigation Database becomes effective when?
New database becomes effective at 0900Z on the date shown
- Old database is therefore effective 9 hours beyond the last day of the cycle
Example - ends 14 Feb ITS VALID UNTIL 15 FEB AT 0900Z
Active - Starts 21st Dec at 0900Z
FMS Functions - PERF
- Performance initialisation
- Climb
- Cruise
- Descent
- Wind
- Fuel management
- T/O and landing data
FMS Functions - NAV
- Position Sensor Data
- Flight Plans
- Fix Info
- Waypoints
- Holds
- PET (Point of Equal Time)/PNR (Point of No Return)/Abeam calculations
FMS Functions - PROG
- Summary of important flight parameters
- ETE (Estimated Time Enroute, time to next waypoint)
- Distance to go
- Fuel Info (Related to the progress of the flight)
- Air data info etc
FMS Functions - FPL Flight Plan
- Flight plan data for each leg in the active flight plan
FMS Functions - RTE
- Allows for quicker flight planning during pre-flight phase
In which MCDU page are the Climb, Cruise and Descent FMS speed schedules entered or changed?
PERF INIT 1/3
What databases does the FMS have in its memory?
Navigation, Custom and Aircraft
With which systems and equipment does the FMS interface with?
IRS, GPS, MFD, PFD, VOR/DME, MCDU
Where in the FMS can you set up the temperature error corrections?
Landing 1/2, enter the temperature and follow the TEMP CORR prompt
On which pages can the active flight plan be displayed and amended on the MCDU?
FPL pages
Where is the vertical profile information displayed?
Both the PFD and MFD
In general, flight plans may be divided into categories, how many and what are they?
4 categories - Active, Lateral, Vertical, Stored
Which MCDU function is selected to view the fuel information?
PROG
In TO mode, the commanded pitch is limited to? (Min and max)
A minimum of 8 Deg and a maximum of 25 deg
As a minimum, what must active flight plans contain?
a FROM waypoint, a TO waypoint and a destination
Which MCDU Function button is used to enter landing speeds?
PERF
Whenever the FMS displays an alerting message on the MCDU scratchpad;
An MSG annunciator is displayed on the PFD
The FMS serves as an aid to?
Flight planning, navigation, performance, database and redundancy management
In order to descend whenever the FMS VNAV is in the descent phase
The altitude set in the altitude selector must be below the present airplane altitude
What MCDU function is used to change the cruise and wind data?
PERF
