IFR Flashcards
135 IFR Takeoff Limitations
Can’t takeoff IFR if the weather conditions are above takeoff minimums but below IFR landing minimums unless there is an alternate airport within 1 hours flying time.
135.217
135 IFR Destination Airport Weather Minimums
Can’t takeoff under IFR or VFR over the top unless at the time of arrival the weather will be at or above the IFR landing minimums.
135.219
135 IFR Alternate Minimums
At the estimated time of arrival:
Ceiling 200’ above the minimum for the approach to be flown, visibility 1sm but never less than visibility minimums for the approach to be flown.
Airports without an approved procedure, descend and land from MEA in VFR conditions.
135.221
135 IFR Alternate Airport Requirements (When do you need to file an alternate?)
When the weather forecast one hour before to one hour after the estimated time of arrival indicates that the conditions will be less than the following:
Ceiling 1500’ above the lowest circling approach MDA
or
If no circling approach, ceiling 1500’ above the lowest published minimum or 2000’ above the airport elevation whichever is higher
and
Visibility at least 3sm or 2sm more than the lowest visibility minimums whichever is greater
135.223
135 IFR Approach and Landing Minimums (What do you need to begin an IFR approach?)
Airport has a weather reporting operated/approved by NWS, or approved by the administrator.
Latest weather report indicates that weather conditions are at or above IFR landing minimums for the airport.
135 IFR Takeoff Minimums
No pilot may takeoff IFR when the visibility is less than the takeoff minimums for the takeoff airport
or
Less than those specified in the operators OpsSpecs
(1/2sm or 2400 RVR, OpsSpec H106)
91 IFR Instrument and Equipment Requirements
Two radio comm and nav equipment suitable for the route to be flown.
Slip-skid indicator (NOTE, 29.1303(g) stand-by attitude indicator, allows us to forego the gyroscopic rate of turn indicator and utilize the slip-skid indicator)
Sensitive altimeter adjustable for barometric pressure
Clock (hours, minutes, seconds)
Generator or alternator of adequate capacity
Gyroscopic pitch and bank indicator (ADI)
Gyroscopic direction indicator (DG)
91.205
135 IFR Alternate Airport Requirements (How much fuel must you carry?)
Fly to the first airport of intended landing, then,
If an alternate was required, to the alternate then thereafter for 30 mins at normal cruising speed
How often must a VOR check be accomplished?
30 days, entry must be made in the aircraft log book or other permanent record
What types of VOR checks and what is the allowable bearing errors?
Ground Check / VOT +/- 4º
Airborne Check +/- 6º
Dual VOR Check +/- 4º
Location and information regarding VOT facilities can be found in the Chart Supplement (formerly A/FD)
91.171
What is the VOR MON (Minimum Operational Network)
As the FAA removes select VOR’s from service the minimum operational network was developed to ensure nearly continuous signal coverage in the Western US at altitudes above 5000’. The MON is intended as a back up to any Performance Based Navigation (GPS) failures.
What are the new VOR service volumes?
VOR low:
40nm to 5000’
70nm to FL180
VOR high: 40nm to 5000' 70nm to FL145 100nm to FL180 130nm to FL450 100nm to FL600
What is the allowable helicopter visibility reduction when flying conventional IAP’s?
Reduce the published visibility by half but never less than 1/4sm or 1200RVR
Note: Must fly 90kts at the MAP to apply the reduction
AIM:10-1-2
When must you execute the MAP?
Upon reaching the MAP (non-precision)
Upon reaching DH on glide path (precision)
