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Aviation Blog - Pilot Lessons, FAA Tips, and Flight Training Guides
The wifiCFI aviation blog covers the topics that matter most in flight training — from Private Pilot maneuvers and FAA written test prep to IFR procedures, commercial regulations, CFI teaching techniques, and multi-engine systems. Every article is written by FAA-certified flight instructors and connects directly to the full-length video and podcast lessons available in our study courses. Browse by topic below or search for a specific subject.
Reverse Sensing in VOR Navigation
Reverse sensing is one of those VOR problems that sounds more mysterious than it really is. It is not a bad VOR, and it is not a sign that the ground station is doing something strange. It is usually a cockpit setup problem: the CDI is giving perfectly valid information for the course you selected, but you are trying to fly the opposite course. Since a VOR gives azimuth information to or from the station, the indication only makes sense if the selected course, your intended d
The Cone of Confusion: What It Really Means in VOR Navigation
In a GPS-heavy cockpit, the cone of confusion can sound like one of those old-school instrument phrases that belongs in a ground school workbook more than in real flying. But it still matters. Whether you are tracking a VOR airway, crossing a station on a VOR approach, flying a hold over a VORTAC, or just staying sharp on backup navigation, understanding the cone of confusion helps you avoid one of the easiest mistakes in conventional nav: trusting the CDI at the exact moment
VOR Service Volumes in the GPS Era: What Pilots Need to Know About the Legacy and New Volumes
For most of us, VOR navigation feels like legacy equipment in a GPS-first cockpit. But the FAA still treats VOR as an important backup, especially through the VOR Minimum Operational Network, or MON. The MON is designed to let pilots continue navigating during a GNSS disruption by flying VOR-to-VOR or proceeding to a MON airport with a conventional approach that does not require GPS, DME, ADF, or surveillance. The FAA’s goal is nearly continuous VOR signal coverage at 5,000 f
Spark vs Compression Ignition Aircraft Engines (the Basics)
Most piston airplanes you’ve flown use spark ignition (like a car engine: fuel + air + spark). Some newer piston airplanes use compression ignition (diesel-style: air + high compression + fuel injection). Here’s the simple, pilot-focused rundown. Study this full length lesson (video, podcast, flashcards, and quiz) here: Full Length Lesson > The core difference: what lights the fuel Spark ignition The engine pulls in air + fuel, compresses the mixture, then spark plugs ignite
How the Manifold Pressure Gauge Works (and What It’s Really Telling You)
If you fly piston airplanes with a constant-speed prop (or anything turbocharged), the manifold pressure (MP) gauge becomes one of your primary “power instruments.” But it’s easy to treat it like a magic number—until you understand what it’s actually measuring: air pressure in the engine’s intake manifold, and therefore how hard the engine is being “filled.” Let’s break down what’s going on under the cowling, why the gauge reads in inches of mercury , what changes MP in fligh
Convective Outlook (AC) Reports: How Pilots Use Them to Stay Ahead of Thunderstorms
Thunderstorms are one of the biggest “plan-breakers” in aviation. They can shut down departures, force reroutes, create severe turbulence well away from the visible rain shaft, and turn a straightforward arrival into holding, diverting, or canceling. That’s where the Convective Outlook (often seen with the header code “AC”) comes in: it’s a strategic forecast that highlights where thunderstorms—especially severe thunderstorms—are most likely over the next 1–3 days. This post
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