RNP AR 1

Question 1

Which easyJet aircraft are currently certified for RNP-AR?

Answer 1

All A320 NEO and A321 NEO. A small number of A320 CEO as well

Question 2

What accuracy can RNP AR be approved to?

Answer 2

According to aircraft equipment, may be approved to RNP 0.3 or RNP below 0.3

Question 3

What is the lowest certified RNP?

Answer 3

RNP 0.1

Question 4

How are RNP approaches labelled in LIDO?

Answer 4

RNP __ AR.

eg. RNP Y 12 (AR)

Question 5

How are RNP approaches labelled in FMS?

Answer 5

RNV __.

eg. RNV12-Y

Question 6

What do you need to check prior to departure if planning an RNP procedure?

Answer 6

AOC operational approval
Crew qualification - both completed training?
Aircraft technical status - see QRH Aircraft Confirguration Summary
MEL status to confirm enough equipment
GPS RAIM check

Question 7

Below what RNP level should FMS GPS Prediction Page not be used?

Answer 7

Below RNP 0.15

Question 8

Can you select an RNP minima below RNP0.3?

Answer 8

If published, you can consider selecting RNP AR minima below RNP 0.3 when expected weather conditions for the approach suggest so. By default, the RNP value coded in FMS is RNP 0.3. You can override this by manually entering a new RNP value

Question 9

For RNP AR operations, why could you need to deselect NAVAIDS for a VOR/DME approach?

Answer 9

To avoid VOR/DME update if GPS primary is lost. Depending on the available navaids, this could be less accurate than pure inertial reference - typically when only a single VOR/DME exists or when poor VOR/DME geometry

Question 10

What do you do if you want to deselect a navaid for RNP purposes, but want the navaid for support in a contingency procedure?

Answer 10

Deselect the navaid in the FMS, however tune the navaid in the RADNAV page for display only

Question 11

What happens if TOO STEEP PATH is displayed after the final descent point in RNP AR operations?

Answer 11

FINAL APP guidance cannot be used

Question 12

What are the main elements of the descent preparation in RNP AR operations?

Answer 12

Approach minimum - determine
Navaid deselection - as required
Weather and landing information - obtain
F-PLN A - check FMS lateral and vertical elements are in agreement with chart
PROG page - Insert reference waypoint or RWY threshold for monitoring
GO Around strategy - Discuss, including degraded naviation

Question 13

What needs to be confirmed before the initial approach in RNP AR operations?

Answer 13

GPS Primary on both FMS
GPS 1+2 both in NAV - checked on GPS monitor page
BOTH GPS and BOTH FMS must be available
TERR on ND - ON on both sides, unless weather radar required on one side
RNP value on PROG page - CHECK/INSERT
BARO REF/ALTIMETER check - maximum altitude discrepancy between altimeters is 100ft

Question 14

When is the latest opportunity to amend the RNP value?

Answer 14

Prior to the activation of APPR phase, latest when passing the IAF

Question 15

Which conditions must be met in order to press the APPR pb for an RNP AR approach?

Answer 15

Cleared for the approach
FMS F-PLN sequenced so final descent point ahead of the aircraft
Aircraft established on vertical flight path (managed DES or ALT mode)
L/DEV scale displayed on the PFD

Question 16

What needs to be checked after pressing the APPR push button in RNP AR operations?

Answer 16

APP NAV is armed or engaged
Final is armed
V/DEV scale on PFD
Final descent point blue arrow on ND indicated FINAL APP conditions are met

Question 17

How many autopilots need to be engaged for RNP operations below 0.3?

Answer 17

One

Question 18

On an RNP AR approach, what needs to be checked at the final descent point?

Answer 18

FINAL APP engaged
Go around altitude set
PROG page - monitor (Check/Confirm that correct RNP value (corresponding to associated minima and planned procedure) is displayed)
Flight Parameters - Monitor

Question 19

Which parameters need to be monitored on an RNP approach?

Answer 19

L/DEV and V/DEV on PFD
XTK on ND
Distances and altitudes published on the charts

Question 20

What are the PM deviation calls on an RNP AR approach?

Answer 20

L/DEV - over half dot

V/DEV - over half dot

Question 21

How many feet does one dot correspond to on an RNP AR approach?

Answer 21

100ft, hence half a dot is 50ft

Question 22

On an RNP AR approach, a go around must be initiated if excessive deviation occurs. What is classed as excessive deviation?

Answer 22

L/DEV reaches 1 RNP
V/DEV reaches 3/4 dot

On the vertical scale, one dot is 100ft, so 75ft = 3/4 dot

Question 23

On an RNP AR approach, what calls relating to the minimum need to be monitored or announced?

Answer 23

100 above

Minimum

Question 24

On an RNP AR approach, by when must the AP be disengaged?

Answer 24

At the latest, the MAP or minimum use height of the AP (250ft AGL for most aircraft in FINAL APP mode), whichever occurs first

Question 25

On an RNP AR approach, why must you disregard the FD after the MAP?

Answer 25

Because it reverts to HDG V/S

Question 26

On an RNP AR approach, can you continue below minima if visual references are lost?

Answer 26

No. A go around must be initiated if visual references are lost below minima

Question 27

On an RNP AR approach, what would you do if there was a systems failure affecting the navigation capability of the aircraft prior to the IAF?

Answer 27

Discontinue the approach and refer to the RNP AR required equipment and reassess RNP AR capability

Question 28

On an RNP AR approach, what would you do in the event of an engine failure?

Answer 28

Continuation is at the discretion of the CM1 considering flight path stability and weather conditions

Question 29

On an RNP AR approach, what should you do with a failure affecting navigation above 1000ft?

Answer 29

Evaluate the effect of the system failure on flight guidance and navigation cabability. eg Loss of GPS primary on one FMS, use the AP associated with the GPS primary side

Question 30

On an RNP AR approach, what should you do with a failure affecting navigation below 1000ft?

Answer 30

Go around, unless required visual reference has been obtained and can be maintained until landing