Video: Night ILS at KBFI

I enjoyed views of the Seattle skyline yesterday evening during an ILS RWY 14R approach to Boeing Field (KBFI) in the Beechcraft A36 Bonanza.

More aviation videos at my YouTube channel, here.

Trim: The 5-Second Rule

Here’s a link to my first Tip of the Week for Pilot Workshops:

How to Set Pitch Trim in One Shot

I’ve previously written two Pilot Friendly® handbooks (Garmin GTN 750 and GTN 650) for Pilot Workshops, and I’m a contributor to the IFR Mastery Monthly Scenarios that the company produces.

Formation Practice

Here are clips from a recent formation practice flight out of Boulder City, NV (KBVU). I was in my Extra 300L flying as wingman to lead in his RV-6A. Lead is a fomer Air Force fighter pilot and instructor who has been my primary mentor for formation flying.

First, basic practice flying off lead’s wing.

Next, pitch-outs and rejoins.

Finally, close- and extended trail. Extended trail is a lot of fun.

New FSS Briefing Format

Flight Service (Leidos) has released a new briefing format at You can watch an overview video below. The FAA contractor just renewed its agreement with FAA to provide FSS services for at least five years.

A Dose of Vitamin G

I recently escaped the gray skies over Seattle and made a quick visit to Boulder City, NV to fly the Extra 300L. Here’s video of one aerobatic session, a warmup to help me reset my personal G-tolerance and practice several basic aerobatic maneuvers.

Minimum Operational Network (MON) Airports

The FAA publishes lists of airports that have ILS and VOR approaches designated as backups if the GPS system is disrupted. These MON (minimum operational network) airports are part of FAA’s plans to decommission about 30% of the existing network of VORs by 2025. The MON airports are not the only airports that offer ILS or VOR approaches. But the procedures at MON airports do not include PBN elements (i.e., GPS).

As the FAA’s MON program website notes:

The VOR MON is further designed to allow aircraft to proceed to a MON airport where an ILS or VOR approach procedure can be flown without the necessity of GPS, DME, ADF, or Surveillance. Of course, any airport with a suitable instrument approach may be used for landing, but the VOR MON assures that at least one airport will be within 100 NM.

The AIM adds:

Any suitable airport can be used to land in the event of a VOR [sic: GPS] outage. For example, an airport with a DME−required ILS approach may be available and could be used by aircraft that are equipped with DME. The intent of the MON airport is to provide an approach that can be used by aircraft without ADF or DME when radar may not be available.

AIM 1-2-3 (f)

Lists of MON airports are sorted by state, which can be misleading at first glance. The state boundaries aren’t especially important–the intent is to provide a MON airport within 100 nm. And even if a widespread GPS outage occurs, you could probably get ATC assistance to find a suitable airport with weather above LIFR minimums. MON airports are truly “last resort” airports.

MON airports are shown on IFR en route charts. See New Airport Info on FAA IFR Charts. More information about the VOR MON program and MON airports is in AIM 1-1-3 (f) VHF Omni-directional Range (VOR). See also this Charting Notice from May 28, 2019.

You can find lists of current MON airports in the Chart Supplement (formerly called the A/FD) books for various regions of the U.S. For example, here is the list of MON airports in the Northwest.

Chart Supplement Northwest Cover
Chart Supplement TOC
MON airports in the Northwest

RNAV Approach at KCLS

I flew an RNAV (GPS) approach at Chehalis, WA (KCLS) to show how low LPV minimums can take you, even to a runway at a typical small-town, non-towered airport that doesn’t have approach lights and other components associated with precision approaches. I flew this procedure in VMC to help you see the runway environment.

Now, an RNAV (GPS) approach to LPV minimums isn’t technically a precision approach, at least according to the current ICAO definition of the term. But as a practical matter, flying to a localizer performance with vertical guidance DA is just like flying an ILS. The lateral guidance funnels you toward the runway, just like a localizer, and the glidepath generated by the GNSS box in the panel acts just like an ILS glideslope. In fact, I prefer flying an LPV approach even when an ILS is available. You don’t have to switch navigation sources, there are no false glideslopes, and there is no ILS critical area.

If the runway served by the RNAV (GPS) approach doesn’t also have an ILS, you probably won’t see approach and runway lights except for edge lighting. And the minimums (DA and visibility) will be a little higher than they would be for a typical category 1 ILS (i.e., 200-1/2). At KCLS, the LPV minimums are 300 AGL (DA 476) and 1 mile.

But those minimums are a substantial improvement over the LNAV MDA (900 MSL; 724 AGL), the lowest you can go without the approved vertical guidance available with WAAS.