A350 General Questions Flashcards
What is the Posible minima for RNP APCH and RNP AR?
250’
Can an RNP APCH have a curved “final approach segment”?
NO
Can an RNP APCH be lower than .3?
NO
How can an RNP AR approach chart be coded?
RNAV (RNP) RWY ????
Or
RNP RWY ?? (AR) cat C/D
What is the reduced obstacle clearance value for an RNP AR?
RNP 2 with no buffer.
What is ABAS
Aircraft Based Augmentation Systems
What is GBAS?
Ground Based Augmentation System
What is SBAS?
Satellite Based Augmentation Systems.
What Position is used by the FMS for RNP AR?
The consolidated position from all 3 ADIRUs
What position information is used to display the Terrain on ND and the TAWS itself?
The ADIRUs consolidated position
What information is used to form the ADIRUs consolidated position?
GNSS Position (MMR)»»GIPIRS Posc»»>ADIRU 1(2 or 3)
Or IRS only Posc
Or. Radio/IRS Posc
In degraded mode ( No GNSS or GIPRS Posc) how is the position information processed?
IRS only Position»>Radio / IRS Posc.»>ADIRU»>to onsite AP+FMS+ND
Now in case of ADIRU failure how is the TAWS position calculated?
It is based on the GNSS alone.
How many and what are the parameters that characterize the GIPIRS position?
Integrity
And
Accuracy
What is in general terms Estimated Position ACCURACY?
Is the uncertainty error between the real position and a possible error.
To consider the RNP position ACCURATE it must be correct…
Correct 95% of the time
What is the center of the position accuracy imaginary circle?
The plane or the estimated position?
The Estimated position, and the plane must be inside this accuracy circle.
When is the RNP accuracy criteria met?
When the the EPU (Estimated Position Uncertainty) is less than 1 RNP.
What happens if the EPU is > 1 RNP value?
The approach CAN NOT be flown
Where do we see the position ACCURACY level in the cockpit?
In the position EPU in the MFD. (EPU=0.02 NM)
What is Position Information Integrity?
Is the level of trust we have that the airplane is within the parameters for 99.999% of the time with 4 or more satelites and .1 mile, taking into account hidden NAV failures.
Where do we see the integrity level in the cockpit?
The NAV PRIMARY
What is the normal miles value of integrity?
Around 0.1 NM
What is the normal error value in mtrs for ACCURACY?
About 20 mtr
The INTEGRITY is a direct result of the…
Number of satellites available (Minimum 4)
What are the minimum number of satellites for NAV?
4
What is the minimum number of satellites for FAULT DETECTION?
5
What is the minimum number of satellites for FAULT DETECTION and EXCLUSION?
6
In case of failure, how is the NAV Back Up trajectory displayed in the ND?
Doted line
What is OBPMA?
On Board Performance Monitoring and Alerting system
A environment constrained area is…
When the there is possibility of GPS masking (blocking) above 5 degrees,
What happens when the crew pulls heading while in Backup Trajectory?
The Back up trajectory disappears from the ND
Nav acurracy=
Nav integrity=
Nav accuracy=EPU > .2=correct >95% of the time.
Nav integrity=
99.9% ok
# of satelites (>4)
Nav Primary
0.1 miles
Where do I find Circling one engine inop?
QRH
At what altitude do we get the TOO LOW GEAR?
500’ agl
Emergency descent call out?
EMERGENCY DESCENT
LOSS OF BRAKING call out?
LOSS OF BRAKING
STALL INDICATIONS call out?
STALL I HAVE CONTROL
STALL AT LIFTOFF
STALL TOGA, 12.5 DGREES
The TAWS call out is…
If the flight crew considers an avoidance maneuver:
“PULL UP TOGA”
AP FD TCAS
TCAS Blue
TCAS
TCAS I HAVE CONTROL
UNRELIABLE AIR SPEED INDICATIONS. Call
UNRELIABLE SPEED
REACTIVE WIND SHEAR WARNING
WIND SHEAR TOGA
RUDDER TRIM RUN AWAY…
Use non sensed procedures
Use pedals to center rudder
If rudder trim ok use
If rudder trim not ok
Use APU🤷♂️
In case of NAV IR ALIGMENT LOST IN FLIGHT, the first initial actions for the Pilot Flying in order to recover the heading and attitude are…
Keep wings level and a constant speed.
Then
Use non sensed procedure
Procedures in the QRH?
SMOKE/FUMES
ALL ENGINE FAILURE LAND
EVAC
LITHIUM BATT FIRE
CIRCLING ONE ENG
EFB FAULT
Where do we find the Aircraft configuration summary?
FCOM General
Do not use ISIS LS to
Back up course take off
SFD stands for
Sand by flight display
SND stands for?
Stand by Navigation display
(The isis HSI)
How do you initiate an ISIS reset?
Press menu
When does the radar begin to emit?
As soon as one eng is running and the WX pb is pressed
Where do I find the MFD pages description?
Systems
Flight management
Controls and indicators
MFD
Pages
Figure of merit is
The distance ate which the navaid is tunable
If we get a message while crosschecking with avionics reading:
THRUST…
check the inserted FLEX TEMP on MFD.
Should we cross check the SID and STAR with the chart…
Absolutely, (misbehavior: erroneous altitude constraint after sid or star change)
There is a misbehavior when two waypoints are within_____and with a diference of ____ in heading and a ____
There is a misbehavior when two waypoints are within_2 miles_and with a diference_of 3 degrees__and a speed of 250 kts
Misbehaviour:
What happens when we perform a Direct To an anchor point or a “via” way point?
The guidance scales and frequencies /channels might disappear from the PFD.
Perform a direct to to a waypoint after or in case of an ILS reinsert the ident.
What is the GND HF DATA LINK pb in the maintenance overhead panel?
Light off HF data transition inhibited on ground.
ON data transmission allowed on gnd. (Data transmission is inhibited on gnd regardless of SW position if:
Refueling
De fueling
Fuel transfer)
What is the service interphone over ride sw for (Maint over head pnl)
Service interphone inhibited in flight
On: if interphone remains inhibited on ground, it can be reactivated using this PB