IFR Check-ride in a month Stump the chump
Posted by Sensitive-Ad1127@reddit | flying | View on Reddit | 24 comments
Alright guys, I’ve got my check-ride in a month. Any gouge or brain-busters are appreciated
randombrain@reddit
This is a really tricky question that the examiner probably won't ask you, and probably won't ever be a factor in your IFR flying career... until the day that it is.
Compare and contrast:
How do you safely navigate yourself from 0' AGL to the minimum safe IFR altitude?
Sensitive-Ad1127@reddit (OP)
Using my charts for obstacle avoidance, and contact with ATC for traffic, comply with instructions I am able to comply with due to terrain.
randombrain@reddit
Which airport are you referring to with that answer, or is it the same answer for both? I'm specifically interesting in the differences between the two scenarios.
randombrain@reddit
Here's another question that won't be asked on the oral, but it might come up in real life. It happened to me when I was a newly-certified radar controller—I think it was my second week of working without a trainer plugged in next to me.
You have filed a flight plan from Ionia County Airport (Y70) to South Bend via VIO V274 PMM V55 GIJ direct with a filed altitude of 060.
The AWOS at Y70 is reporting ceiling OVC015 and visibility 10SM—marginal VFR, to be sure, but still legal VFR.
Your cell carrier has poor coverage near Ionia, so you elect to depart VFR. You take off from Runway 28. Because you are VFR, you maintain 500' below the cloud layer—1000' AGL, 1800' MSL. You call Great Lakes Approach airborne to pick up your IFR clearance.
The Great Lakes Approach controller issues your squawk code and identifies you on radar. They give you the Grand Rapids altimeter setting and confirm that you are at 1800' MSL. Then they say this:
What do you say, and why?
Sensitive-Ad1127@reddit (OP)
That is definitely something I have not seen before. Off of just my knowledge I would most likely reply “unable” due to the fact that I am in IMC.
That being said we have the charts that tell us obstacle heights in the area so maybe you “could” but it’s not legal?
randombrain@reddit
Separate question. Let's say you take into account the hints I mentioned, and you still aren't comfortable taking responsibility for your own terrain and obstruction clearance. That's perfectly fine; you're the PIC, after all.
When you say this to ATC, they respond, "N345, roger. Unable IFR clearance. Maintain VFR, say intentions."
What's your Plan B?
randombrain@reddit
Okay, here are a few hints.
FLY8MA@reddit
You're flying an instrument approach in IMC. You've just passed the FAF when you break out of the clouds and now have visual of the runway for the rest of the approach. Can you still log this as an instrument approach?
What are your takeoff minimums under Part 91?
Can you legally fly a VOR approach only using GPS?
Remarkable_Mud_5718@reddit
rjjamenson@reddit
Is a baro- compensated fms required to shoot an RNP approach to RNP 0.30 minimums ?
Sensitive-Ad1127@reddit (OP)
No, the temperature range on the approach plate will restrict you from .10 minimums.
randombrain@reddit
You're going in to GRR. You get the ATIS, which has 05016KT SCT013 BKN035 and says that both the ILS RWY 08R and the ILS RWY 35 are in use.
You're cleared the ILS RWY 08R. Brief the expected immediate/initial response from Grand Rapids Tower if something happens and you report going missed, or get sent around, on short final.
randombrain@reddit
Compare and contrast:
Walk through each scenario from now until engine shutdown.
KW1908@reddit
What are non standard alternate minimums?
__joel_t@reddit
Are you required to fly an ODP? Why or why not?
If an airport doesn't have any ODPs listed, what is the significance of that?
Sensitive-Ad1127@reddit (OP)
To my knowledge without looking it up first:
If an ODP is published for an airport you are expected to fly it, or if you are assigned a specific departure.
If no ODP’s are listed that means the terrain around the airport allows for the standard climb and avoiding obstacles.
__joel_t@reddit
Air carriers (121 and 135) are required to fly ODPs. Part 91 ops aren't required to, unless ATC specifically clears you for one. But it's still a good idea to fly them anyway.
If no ODPs are listed, it could mean you have a diverse departure area. It could also mean that the airport was never surveyed for obstacles and thus no ODPs were ever developed. Very different situations here! The way to tell the difference is to see if the airport has any instrument approaches. If there are no instrument approaches, then the airport was never surveyed for obstacles and thus no ODPs were developed.
bb1001@reddit
When is an alternate required
Sensitive-Ad1127@reddit (OP)
Required if weather is reported below: 3 sm visibility 2k foot ceiling 1hr before and 1hr after ETA to destination
bb1001@reddit
Go ahead and read 91.169
Sensitive-Ad1127@reddit (OP)
I pulled this from that: For aircraft other than helicopters. For at least 1 hour before and for 1 hour after the estimated time of arrival, the ceiling will be at least 2,000 feet above the airport elevation and the visibility will be at least 3 statute miles.
Did I miss something hidden?
bb1001@reddit
Yes you are skipping to the bottom of the regulation, read it from the beginning. You must always have an alternate unless there is an instrument approach AND you meet those weather. It might seem pedantic but there is a difference from what you said and examiners will want you to understand that.
Sensitive-Ad1127@reddit (OP)
AH. I see it now. Completely glossed over the first part, thank you.
rFlyingTower@reddit
This is a copy of the original post body for posterity:
Alright guys, I’ve got my check-ride in a month. Any gouge or brain-busters are appreciated
Please downvote this comment until it collapses.
Questions about this comment? Please see this wiki post before contacting the mods.
I am a bot, and this action was performed automatically. If you have any questions, please contact the mods of this subreddit.