Instrument Procedures Approaches Flashcards
What is the speeds for a CAT A aircraft
Vat <91
Initial approach speed 90/150
Final approach speed 70/100
Max visual circling speed 100
Speeds for CAT B aircraft
Vat 91/120
Initial approach speed 120/180
Final approach speed 85/130
Max visual circling speed 135
Speeds for class C aircraft
Vat 121/140
Initial approach speed 160/240
Final approach speed 115/160
Max visual circling speed 180
Speeds for class D aircraft
Vat 141/165
Initial approach speed 185/250
Final approach speed 130/185
Max visual circling speed 205
What is the min obstacle clearance at min sector altitude / terminal arrival altitudes
300m within 25nms of nav aid
When can you descend below MSA
The aerodrome is visible
Aircraft radar vectored
Flying published procedure
What does axis does precision approach use
Azimuth and glide path
NOT distance
CAT 1
System min 60m (200ft)
DH >60m (200ft)
RVR >550m
Ground vis >800m
CAT 11
System min 30m (100ft)
DH 30-60m (100-200ft)
RVR >350m
CAT 111 A
System min nil
DH <30m (100ft) or no DH
RVR >200m
Cat 111 B
System min nil
DH <15m (50ft) or no DH
RVR 50-200m
Cat 111C
System min nil
DH >60m nil
RVR nil
Ground vis nil
What happens if you lose glide slope
Becomes non precision approach
Who is DH/DA set by
Operator
Who is OCH / OCA set by
obstacle clearance height
The state
What is a visual approach
Part of an instrument approach except it is finished visually (not the same as going to DH)
Note not need to be VMC
Who is responsible for separation in a visual approach
Provided by atc
Must still follow profile of the instrument approach
When can a instrument procedure be completed in a different way than that published
When given contrary instructions by atc
If RVR is below limits what is the lowest you can go for non- precision and precision approaches
Non- precision
300m (1000ft)
Precision
Not past outer marker
If already lower than this when RVR goes below min = continue to DH /DA / MDA / MDH
What is a straight - in approach for a non precision approach
Where the final approach track (FAT) converges with the runway of 30° or less
When are you “established” on a NDB
Non precision approach
5° either side of final approach track (FAT)
What is the MOC when in the primary section
Primary section = within half scale deflection
= 300m
600m for mountainous areas
What is MOC in secondary areas
Outside halfwidth deflection
= reduces until it is 0 at edges of secondary area
What is fix tolerance area
Area of uncertainty
What is most accurate for track guidance
Ils localiser
What is most accurate for bearing
Ils localiser
What is most accurate for overhead position
NDB
What is a arrival segment
Permits transition from the en route phase to the approach phase
What is the initial approach segment
Aircraft had left the en route structure and is entering the instrument approach procedure
What is the intermediate approach segment
In which the aircrafts speed and configuration is adjusted to prepare the aircraft for the final approach
In which segment is the aircrafts speed and configuration adjusted to prepare the aircraft for final approach
Intermediate approach segment
What is the final approach segment
In which alignment and descent for landing are made
What is missed approach segment
Which must be followed if the approach cannot be continued
When does the arrival segment start and finish and what is the MOC
Starts on leaving en rote phase or 25nm
MOC 300m
When does the initial approach segment start and end and what is the MOC
Starts at the IAF
Ends at the IF
MOC 300m
When does the intermediate approach segment start and finish
What is the MOC
Starts at initial fix
Ends at the final approach fix
MOC reduces from 300m to 150m
When does the final approach segment start and end
Starts final approach fix
Ends on landing or at the missed approach fix
When does a STAR begin and end
Normally begins at the end of the en route
End at the initial approach fix
What is the max intercept from IAF to IF for precision and non precision approaches
Precision = 90°
Non precision = 120°
What is the max intercept for a dead reckoning between IAF to IF
45° at 10nm
What is the optimum distance for a FAF
Final approach fix
Optimum 5nm
Maximum 10nm
What is a step down fix
A point on a approach at which a certain height can’t be descended below
If reach height before it = level off until reach SDF (step down fix)
When can a aircraft descent to MDH/ MDA on a non precision approach with no FAF
Once established on the final approach track (FAT)
NDB = +/- 5° of final approach track
Who is responsible for terrain clearance
Pilot in command always
Except
When being radar vectored
What is the OCH / OCA set by
The state
Non precision reference from aerodrome elevation or threshold if it is more than 7ft below aerodrome elevation
for VM(C) based upon the highest obstacle in the VM(c) area
What is the system minima for CAT 1
60m (200ft)
What is system minima for CAT 11
30m (100ft)
What is system minima for CAT 111
Not applicable
What is the vertical distance between the wheels and the glide path aerial for class A and B aircraft
6m
What is the vertical distance between the wheels and the glide path aerial for class C and D aircraft
7m
What is the MOC for calculation of MDH / MDA
Without FAF = 90m (295ft)
With FAF = 75m (246ft)
What is the MOC for MDH / MDA for VM(C)
Category A and B = 90m (295ft)
Category C and D = 120m (394ft)
OCH shall not be less than
CAT A = 120m (394ft) CAT B = 150m (492ft) CAT C = 180m (591ft) CAT D = 210m CAT E = 240m
= +30m every time
What is the max approach gradient without authority permission
6.5%
What is a track reversal
Turn from outbound to inbound track
What is a procedure turn
Turn from outbound to inbound where track is reciprocated
What is the times for a track reversal 450/180° procedure turn
CAT A and B = 1 min
CAT C and D and E = 1min 15 seconds
What is a base turn track reversal
Outbound on one track and inbound on a different track
What is a approach turning point
Will have a DME range
Takes priority over timings
In the missed approach where does the initial phase start and end
Starts at the missed approach point
Ends when climb established
No turns allowed
In the missed approach where does the intermediate phase start and end
Starts at climb established
Ends at 50m obstacle clearance can be maintained and guaranteed
Turns up to 15° allowed
2.5% gradient climb endures 30m obstacle clearance at all times
In the missed approach where does the final phase start and end
Starts at 50m obstacle clearance can be maintained
Ends aircraft initiates new approach, hold, or returns to en-route
Turns over 15° permitted
MOC 50m
Can you fly over the MAPt higher than the altitude on the procedure
Yes as long as you pass over it
Ensure min obstacle clearance is not infringed throughout the procedure
What are RNAV approaches based on
VOR DME co- located = non precision
What is the most important factor with regards to instrument approaches
Speed