IFR Flashcards
Alternate weather minima requirements: two precision approaches
400-1 or 200-1/2 above the lowest usable HAT and visibility, whichever is greater
Alternate weather minima requirements: Alternate aerodrome without a TAF requires?
A serviceable GFA
- no clouds lower than 1000’ above the lowest usable HAT/HAA
- no CBs
- vis no less than 3 miles
Alternate weather minima requirements: One usable precision approach
600-2 or 300-1 above the lowest useable HAT and visibility, whichever is greater
Alternate weather minima requirements: Non-precision available only
800-2 or 300-1 above the lowest usable HAT/HAA and visibility usable, whichever is greater
Alternate weather minima requirements: no IFR approach available?
Forecast weather must be no lower than 500’ above a minimum IFR altitude that will permit a VFR approach and landing
Departure clearance will meet obstacle clearance requirements and ar based on the premise that on departure the aircraft will?
- cross at least 35’ above the departure end of the runway
- Climb on runway heading to 400’ AAE before turning
- maintain a climb gradient of at least 200’ per NM throughout the climb to a minimum latitude for enroute operations
GPS RAIM alert limits - approach mode
Goes into approach mode 2 nm back from FAWP
RAIM sensitivity is 0.3 nm either side of centreline
GPS RAIM alert limits - terminal mode
Terminal mode is activated 30 nm back from the aerodrome
RAIM sensitivity is 1.0 nm either side of centreline
GPS RAIM alert limits - en route mode
En route mode is activated 30 nm from airport
RAIM sensitivity is 2.0 nm either side of centreline
GPS CDI/Track bar sensitivity - approach mode
Goes into approach mode 2nm back from FAWP
sensitivity is 0.3 nm either side of centreline (full deflection)
GPS CDI/Track bar sensitivity - terminal mode
Terminal mode is activated 30 nm back from aerodrome
Sensitivity is 1.0 nm either side of centreline (full scale deflection)
GPS CDI/Track bar sensitivity - en route mode
En route mode activated 30 nm from airport
CDI sensitivity is 5.0 nm (full scale deflection)
Contact approach - pilot must have?
- pilot requested
- Clear of clouds
- min 1 NM vis
- have reasonable expectations of continuing Wx conditions (non-deteriorating)
- maintain min 1000’ above highest obstacle within 5 NM of aircraft until landing
- IFR is not cancelled
Contact approach - the aerodrome must have?
- be reporting min 1 SM of vis
- have an approved instrument approach
- traffic conditions that will permit the approach
Visual approach
- can be initiated by pilot or ATC
- ceiling must be MRVA plus 500’ (min radar vector alt)
- vis 3 SM or greater
- pilot must have airport or traffic in sight to maintain visual separation
- Wx is at least VFR as no missed approach will be issued
- pilots responsibility for wake turbulence separation, noise abatements and any other restrictions
- in the event of a missed approach, climb runway heading and listen for instructions
Windshear - into an increasing Windshear
Increasing performance Windshear
- increasing headwind produced more lift AC becomes high on glide path. POWER REDUCTION required to re-establish on GP
- Once re-established, POWER INCREASE to maintain GP
- ground speed is reduced; sink rate reduced
Windshear - into a decreasing windshear
Decreasing performance Windshear
- decreased headwind produced less lift and AC becomes low on glide path. POWER INCREASE is required to re-establish on GP
- Once re-established, POWER DECREASE required to maintain GP
- ground speed is increased; sink rate increased
Headwind on inbound leg - greater than one min in
Reduce outbound leg by 3/4 of the error
Tailwind on inbound leg - less than one min inbound
Decrease outbound leg by 4/3 of error
Inbound RMI intercepts
Course - head - cut
Outbound RMI intercepts
Tail - course - cut
Circling MDA gives _____ for clearance
300’
Circling - Radius protection from threshold A B C D E
A - 1.3 (nm) B - 1.5 C - 1.7 D - 2.3 E - 4.5
Speed category A B C D E
A. Up to 90 (KTS) B. 91-120 C. 121-140 D. 141-165 E. Over 165
VFR requirements - controlled
Clear of clouds vertical - 500’
Horizontal - 1 mile
AGL - 500’
Visibility - 3 miles
Special VFR requirements
Visibility - 1 mile
Clear of clouds
Ground in sight
Ceiling and visibility requirements - IFR
Ceiling - 1000’ and below
Visibility 1-3 sm
Ceiling and visibility requirements - MVFR
Ceiling 1000’ - 3000’
Visibility 3-5 sm
Ceiling and visibility requirements - VFR
Ceiling +3000’
Visibility +5 sm
