CHAPTER 34 Flashcards
How many different ways can you can tune the VOR?
3 - Auto FMGEC, Manual MCDU and Manual on the RMP (On side only Captains RMP VOR 1 & FOs RMP for VOR 2)
What supplies power to the ADMs?
The associated ADIRU
What does an ADM do?
Converts pressure inputs to ARINC bus digital information for the ADIRU
What is contained In a strapdown Inertial Reference System (IRS)?
3 x Accelerometers and 3 x Ring laser gyros
Which ADIRU is fed from the Stby Pitot probe?
Number 3
What indication is there that the ADM pneumatic connection is correct?
A visible blue ring on the connector indicates correct connection.
Which ADIRUs feed the DDRMI?
ADIRU 1 & 3
How long does a normal alignment of the IRS system take?
10 Minutes
At what North or South latitude is it not possible to align the IRS system?
82 degrees
How do you perform a fast realignment?
You can do a fast realignment with the selector switch, which must be turned from NAV to OFF and then back to NAV in less than 5 seconds.
The Inertial Reference (IR) starts a 30-second realignment with existing attitude, heading angles and velocities set to zero.
What indication do you get on the ISIS if your airspeed data is not valid?
When the airspeed data is not valid, the airspeed scale is replaced by a red SPD flag.
What systems are contained in the The Multi-Mode Receiver LRU?
MMR = ILS + GPS.
Where is the MKR receiver installed?
2 identical VOR/MKR receivers are fitted but only 1 MKR system is wired on the aircraft
How do you you tune an ILS Glideslope frequency?
By tuning to the paired ILS Localiser frequency
How many satellites make up the aircraft GPS system?
The spatial segment is composed of a constellation of 24 satellites.
These satellites are arranged in six separate orbital planes of four satellites each on a circular orbit.
How many satellites does the GPS system require for accurate aircraft position calculation?
At least 4
What colour is the ILS information displayed on the ND?
ILS information is displayed in magenta
Normally how is ILS 1 information displayed?
The ILS 1 information is displayed on PFD 1 and ND 2
What is displayed and where if GPS signal is lost?
GPS PRIMARY LOST on the NDs
What ?is the purpose of the CFDIU?
The Centralized Fault Display Interface Unit (CFDIU) enables tests and trouble shooting to be carried out on the MMR system using the MCDU.
When can you use the CFDIU for testing?
The test can be done only on ground
What principle does RAD ALT operate with?
The time between the transmission and the reception of the RA signal is proportional to the A/C height.
What is RAD ALTs operating range?
RAD ALT operates from 0 ft to 2.500 ft.
Where are the RAD ALT LRUs located on the aircraft?
AFT Cargo compartment
where do TCAS (or T2CAS) indications appear?
Both the PFDs and the NDs.
What is the purpose of the SUPPRESSOR in the TCAS system?
ATC and the Distance Measurement Equipment (DME) operate in the same frequency range. A suppressor signal is transmitted by the operating system to inhibit the other systems and to prevent simultaneous transmission.
In the TCAS system where is the barometric altitude transmitted from?
The barometric altitude is transmitted via the ATC transponder.
How can the TCAS system be tested?
The Centralized Fault Display Interface Unit (CFDIU) allows testing and trouble-shooting of the TCAS (or T2CAS if installed) through the MCDU. The tests are only available on ground.
Various discrete signals are used for inhibition by equipment with higher priority than the TCAS (or T2CAS). What are these systems?
1, Stall
2, WindShear
3, Predictive WindShear (PWS)
4, Enhanced Ground Proximity Warning System (EGPWS) messages.
The Distance Measuring Equipment (DME) provides range details of what?
The Distance Measuring Equipment (DME) provides a digital readout of the aircraft slant range distance from a selected ground station.
What LRU is responsible for flight leg counting in the Navigation systems?
Each Landing Gear Control and Interface Unit (LGCIU) sends a discrete signal to the associated DME interrogator. This is ground/flight information used for BITE testing inhibits and to count the flight legs.
The ADF is a radio navigation aid, what does it provide?
The relative bearing of the aircraft to a selected ground station called Non-Directional Beacon (NDB)
How is ADF 1 and ADF 2 displayed on the NDs and optional DDRMI?
ADF 1 is represented by a single pointer ADF 2 is represented by a double pointer
The VOR system is a radio navigation aid, what does it provide?
The VOR system calculates a bearing with respect to magnetic north between the ground station and the aircraft axis. Furthermore, the VOR station provides a Morse identification, which identifies the station.
The MKR system is a radio navigation aid used in conjunction with ILS, what does it provide?
When the aircraft overflies the MKR, the type of MKR is display on the PFDs in different colours, and is indicated by an aural identification.
