FMS approach procedures Flashcards
what does AX mean?
IAF
what does IX mean?
IF
what does CX mean?
Final approach course fix or capture fix
what does FX mean?
final approach fix
what does TX mean?
touch down point
what does SX mean?
step down fix
what does an A preceding the approach on the arrival page indicate?
advanced avionics equipment required
roll steering on the autopilot receiving nav info from the FMS
When will advanced avionics be required?
if the turn at the FAF exceeds 6 degrees and/or an RF leg is used
what will happen when the localiser is intercepted on an FMS ILS approach?
the FMS will transfer aircraft navigation to the EFIS for the approach segment
what is required for the FMS to handover navigation to the EFIS?
selection of flight director approach mode
when must the VOR/DME info be put into the FMS when flying an RNAV VOR/DME approach?
if the words ‘or GPS’ are not in the title of the approach
when can VOR and VOR/DME approaches be flown as an SBAS/WAAS overlay approach?
‘or GPS’ is in the title of the approach
what is the only way NDB approaches can be flown through the FMS?
with the use of SBAS/WAAS
what does the advisory configuration apply to?
approach final segment on an approach that the FMS cannot enable
on an approach that is not enabled, what part can the FMS not navigate?
final approach segment
when a teardrop is included in the transition, what approach categories will be included in the FMS?
C and D
what is required for all FMS approaches?
a final approach fix and a missed approach point
when is a final approach capture fix (FACF) used?
during automatic activation of an approach
what buffer zone prior to the FAF does the FMS need to activate the approach?
2nm
when there is no FACF, what will the FMS do?
create its own one 2nm from the FAF
can the approach segment be edited?
no
what must we press in the event of a missed approach?
MISSD APPR LSK
when is selection of the missed approach available?
upon crossing the FAF
will the FMS provide vertical guidance during missed approach?
no
after a missed approach, what do we need to do in order to reconnect the flight director to the FMS?
select FD NAV mode
when can we arm the approach in the FMS?
within 50nm of the airport
what is the purpose of manually arming the approach between 30 and 50nm?
to place the FMS into terminal phase early
when will the FMS automatically arm the approach?
when the aircraft enters the terminal area at 30nm from the airport
can the FMS tune a ground based navaid?
yes, it will ask permission beforehand though
what will we see 15 seconds before an automatic activation?
SCALE CHANGE
what criteria must be filled for the approach to activate automatically?
- approach must be armed
2. angle of intercept or track error must be less than either 15 degrees or 80 degrees of the final approach course
what are the words that will result in the need to activate the approach manually?
‘radar vectors to final’
after a manual activation when will the glideslope come alive?
within the lateral cone of 20 degrees of the final approach course
when on vectors following a missed approach, when should we activate the approach?
on downwind to avoid inadvertent leg sequencing
what determines whether baro or SBAS is used for vertical guidance?
approach type and availability of SBAS
when will the FMS glideslope terminate?
missed approach point
what will the FMS do with the glideslope if step down altitudes are included?
the glideslope calculation ensures the glide will clear the step down fixes
what if the step down fix is higher than the calculated glideslope?
the glideslope is recalculated to an angle that will clear the step-down fix
when may vertical guidance not be provided?
circling only approaches
MAP after runway threshold
glideslope angle too steep (max 7.76 degrees)
glideslope angle too shallow (min 1.97 degrees)
what does the FMS require to ‘fly’ an ILS?
- EFIS
- FD
- advanced autopilot
when will the EFIS give the signal to the FMS that it is ready to receive NAV to NAV info on an ILS?
when the pilot selects approach mode on the flight director
when will the EFIS assume navigational control on an ILS?
when the FMS detects the localiser and it has received the transfer ready notification from the EFIS
On a vectored ILS what must be armed before pressing the FMS intercept LSK?
flight director approach mode
what flight director mode. should we use on an ILS if established but not cleared for the approach?
NAV, after control has been transferred to the EFIS
what does LPV minima require?
SBAS
what kind of minima do LPV and LNAV/VNAV approaches use?
DA
on an RNAV approach what does the final approach segment data block contain?
approach specific information that allows the FMS to meet the requirements to fly to LPV minima
on an RNAV approach what will let us know that the FASDB is in the FMS?
channel number is being shown
can we fly to LPV minima if there is no FASDB?
no. LNAV/VNAV minima as long as the GPS has ellipsoid data
where is the SBAS glideslope?
from the FAF to the runway threshold
if the database doesn’t have required data for an LPV but we’re still covered by SBAS what will the glideslope be based on?
baro
when can level of service not be changed?
after passing the FAF
what will we see if SBAS requirements for VNAV fail at the FAF?
the FMS will flag VNAV
when is LOS determined on an RNAV approach?
approach activation
what must the pilot do if LOS is lost prior to the FAF?
select a lower LOS
on an RNAV approach when will the FMS give a low altitude alert?
at or below the vertical protection level (164ft) +150ft
what does a RAIM prediction predict?
satellite availibility and geometry to determine GPS accuracy
where is RAIM prediction on the FMS?
FPL menu
what do we need the RAIM to be for a 30 minute window for our approach?
APPR
when will the aircraft go into a 5 minute coast segment?
if RAIM integrity is available until crossing the FAF
what will the aircraft do in the 5 minute coast segment if RAIM integrity is downgraded to a 4 satellite situation?
continue following GPS guidance for up to 5 minutes
what must we do if we get a GPS INTEG annunciation?
go-around
