Dans Instrument Study Flashcards
How do you choose an alternate?
Step one: look for published nonstandard alternate minima on the airport information.
Step two: if no nonstandard alternate minima exist I use the standard alternate minima:
At the estimated time of arrival:
-If the airport has a precision approach at least 600 foot ceilings and 2 statute miles visibility
- If the airport has a non-precision approach at least 800 foot ceilings and two statute miles visibility
- If the airport has no published instrument approaches I must be able to to descend from the minimum enroute altitude, approach, and land under basic VFR
When do you require an alternate?
If from one hour before and one hour after the estimated time of arrival, the forecasted ceilings are 2000 or less and three statute miles visibility or less, then I must file an alternate
What are the standard alternate minima?
At the estimated time of arrival:
- If the airport has a precision approach at least 600 foot ceilings and 2 stute miles visibility
- If the airport has a non-precision approach at least 800 foot ceilings and two statute miles visibility
- If the airport has no published instrument approaches I must be able to to descend from the minimum enroute altitude, approach, and land under basic VFR
When can you descend below decision altitude?
To descend below decision attitude I must:
- ) Be able to descend to land with a normal rate of descent and normal maneuvers,
- ) Have the required flight visibility and
- ) Have at least one of the following insight:
- The approach lighting system except that I cannot descend below 100 feet above touchdown zone elevation.
- The threshold, lights, or markings
- The runway, lights, or markings
- The touchdown zone lights or markings
- The runway end identifier lights
- The VASI (papi included)
What is the definition of flight visibility?
Flight visibility is the average forward horizontal distance that can be seen as viewed from the cockpit of an airplane in flight where prominent unlighted objects can be seen during the day and prominent lighted objects can be seen at night
Can you use an airport that only has a GPS approach as an alternate?
Yes but forecast weather at estimated time of arrival must allow descent from VFR conditions.
When can the pilot only descend to 100 feet above TDZE?
When only the approach lights (partial system) are in sight. To land the aircraft one of the other visual cues must be visible in addition to the normal position to land, and required flight visibility.
What transponder code should be used when two-way radio communication is lost?
7600
If VFR conditions are encountered after lost comms what action should be taken?
The pilot should maintain VFR and land as soon as practicable.
If lost comms is encountered in instrument meteorological conditions what route should the pilot use?
In order of priority:
- last route assigned
- last vectored
- last expected
- route filed
If lost comms is encountered in instrument meteorological conditions what altitude should the pilot use?
The highest of:
- minimum in route altitude
- last expected
- last assigned
How will a pilot terminate a flight when communications have been lost in instrument meteorological conditions
The pilot will fly the proper route and altitude to the clearance limit. when the clearance limit is a fix from which an approach begins commence descent or descent and approach as close as possible to the expected further clearance time if one has been received, Or if one has not been received as close as possible to the estimated time of arrival as calculated from the filed or amended estimated time en route. If the clearance limit is not a fix from which an approach begins leave the clearance limit at the expect further clearance time if one has been received or if none has been received upon arrival over the clearance limit and proceed to a fix from which an approach begins to commence descent or descent and approach as close as possible to the estimated time of arrival as calculated from the filed or amended estimated time en route.
If no minimum altitude is published at what altitude must the pilot operate the aircraft?
Mountainous terrain: 2000 feet above the highest obstacle within four nautical miles.
Non-mountainous terrain: 1000 feet above the highest obstacle within four nautical miles.
At what altitude should be the aircraft operate above in IFR flight.
Aircraft should be operated above the IFR minimum for that segment of flight. usually this is the MEA but in the case of an MEA and MOCA the pilot can operate below the MEA but above the MOCA provided they are within 22 nautical Miles of the applicable VOR.
When changing altitude based on IFR minimum altitude, the climb should be initiated after passing the point where the minimum changes, unless obstacles prevent this. If the minimum crossing altitude MCA exists the aircraft must cross this point at or above the MCA.
Part 91.177
climb to a higher minimum I FR altitude shall begin immediately after passing the point beyond which that minimum altitude applies except that when ground obstructions intervene, the point beyond which that higher minimum altitude applies shall be crossed at or above the applicable MCA.
If the pilot is operating VFR on top what altitudes should be observed when operating below 18,000 feet MSL?
The semicircular rule applies For VFR altitudes
East is odd, West is even
magnetic course of 0° through 179° any odd thousand foot MSL altitude (3000 5000 7000)
Magnetic course of 180° through 359° any even thousand foot MSL altitude (2000 4000 6000)
What factors are considered when selecting an altitude for an IFR flight plan?
- Above all IFR minimum altitudes.
- Most favorable winds aloft.
- Correct altitude for direction of flight.
When can a pilot log instrument time?
A Pilot can log instrument time in his or her logbook when in actual or simulated conditions. If a safety pilot is required the pilot must log the location and type of each instrument approach accomplished and the name of the safety pilot.
What are the instrument currency requirements for the instrument airplane rating?
Within the preceding six calendar months the pilot must have accomplished:
- Six approaches in actual or simulated conditions
- Holding
- Intercepting and tracking through the use of navigational sources
If the pilot has not accomplish this within the six-month period, there is a second six calendar months where the pilot can fly the requirements with an appropriately rated safety pilot if both six-month periods lapse for a total of 12 calendar months the pilot must find an ASI DPE or appropriately rated instructor CFII to perform an IPC.
What documents are required for flight?
A- Airworthiness certificate R- Registration R- Radio certificate(for international flights) O- Operating limitations W- Weight and Balance
Go around missed approach 5 C’s
C- Cram (Max power) C- Climb (initiate climb) C- Clean (aircraft configuration) C- Cool (speed/ climb for temp) C- Call (advise ATC)
Lost procedures: six C’s
C- Climb C- Circle C- Conserve C- Call C- Confess C- Comply
Three errors of instrument scan
Fixation
Omission
Emphasis