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That was caused by an IOS change.

GPS altitude is normally a much more accurate indication of true altitude verses a Baro altimeter and is what is used for terrain avoidance. GPS altitude is unaffected by non standard pressure lapse rates and temperature. A Baro altimeter set to the appropriate altimeter setting will indicate...

A form of GPS altitude is broadcast by ADS-B Out, but it is using a spheroid model of the earth's sea level surface. It is called geometric altitude and is based on the WGS-84 model. It does not take into consideration the differences in the local gravity. In the US, this can be as much as 200...

If you have UAT such as tailBeacon or GDL88 or ... (about 20% have this for ADS-B Out), then the coverage of ADS-B receivers that feed the various tracking companies have large areas where they only receive 1090ES and don't receive UAT, so you fall into a coverage hole.

I think they do. With ADS-B UAT ground stations, they broadcast a precise tower location and can be used in a similar manner. I crowd sourced the locations of about 500 ADS-B ground station locations using this method and ForeFlight. UAT based navigation would provide RNAV enroute capability in...

In a Bonanza, it is dirt simple. Gear down to go down. I teach and fly instrument approaches with approach power (15 to 16 inches), 105 to 110 kts, no flaps. At the GP/GS intercept, lower the gear. Speed remains unchanged, pitch goes from +1 to -2. I only use flaps if I break out and have the...

The FAA made it difficult for LTA to be extracted from the FNS NOTAM site, but last month, ForeFlight now extracts them and publishes them in the airport view Airports>Procedure>Airport. See an examples at KCLT, KSJC, and KSFO. Also ForeFlight added links in the Procedure tab to any Special...

Agree, I should have been clearer. The original NOTAM FDC ZDC 1/1155 only applied to VFR, the replacement NOTAM FDC TFR ZDC 4/1734 "30 to 60 NM speed restriction" section only applies to VFR, but there are other sections of the current NOTAM that apply to all aircraft.

The TFR only applies to VFR operation.

ForeFlight used to not display TFR FDC ZDC 1/1155 from the 2016 timeframe as it just dealt with the speed change, so was easy to detect and eliminate. However, this did cause some complaints because FISB doesn't display TFR until inside the look ahead range for a NOTAM which is 100 NM from the...

This is what part 5 of the current TFR says: ForeFlight interprets the TFR text and displays it accordingly.

I have the opposite view. The only time that there is a real collision hazard is when both aircraft are going the same way. The aircraft in front will not be able to see the one to its 6 and the other aircraft may not be able to see an aircraft that is being over taken due to either an altitude...

I think that if the approach procedure was conducted under IFR, then the circling direction is both "required" as well as "authorized" by the CFR 97 regulation that incorporates the approach procedure. OTOH, if it was a practice approach, conducted under VFR, I would think that one would fly the...

HILPT generally consumes less airspace than a standard PT. It also supports being both an IAF and an IF, allowing entry from any direction into the course reversal maneuver. The only time I recall seeing a PT used on a GPS type approach was early on when there were overlay approach procedures...

Use it in your training. Your instructor should incorporate it at the right time. Don't take ForeFlight into the practical exam if you haven't been using it, the practical exam is no place to show you are unfamiliar with the tool.

Bottom line, you must circle in the direction of the pattern "Unless otherwise authorized or required". I spent quite a bit of time asking the FAA General Counsel what "authorized or required" meant. If the approach procedure requires that circling in the pattern direction is not authorized...

If your ADS-B Out system is broadcasting, ForeFlight should detect it as ownship. The N number may show as being wrong, but it should show up as having been detected. I have seen a few instances where the signal from the ADS-B Out overloads the Stratus and results in the ownship not being...

From time to time, I have seen reports of delayed ADS-B traffic positions. They were all with a Stratus. Not only was other traffic delayed, ownship was also delayed. This caused the ownship suppression to fail when the ownship delay was far enough behind one's current position. I termed it the...

There isn't a DVFR type flight plan any more. ICAO doesn't provide for them. The FAA Domestic flight plan form used to have a DVFR check box, but there isn't an equivalent on the ICAO form, so filing a VFR flight plan with "DVFR" in the remarks will work. Even if you don't include "DVFR" in the...

The note does not mention a Procedure Turn, it says: "Procedure NA for arrivals at JOVNA on V49 Southwest bound", meaning the procedure is not authorized using V49 southbound because the angle of turn would be more than 90 degrees at JOVNA if V49 still existed, which it does not. So I would have...