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Old 11-17-2017, 01:30 PM   #1  
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Default FAA To Allow Own-ship Display on EFB Apps

The FAA has signaled a sea-change in its attitude about display of own-ship position on electronic flight bags (EFBs) and has issued new Advisory Circular (AC) guidance supporting that feature. The agency also is stepping back from in-depth involvement with operators in managing their EFB programs.

AC120-76D replaces the -C version issued in 2014, which for commercial operators specifically prohibited use of geo-referencing or own-ship position display while using moving-map features in the air. Use of geo-referencing on the ground was previoulsy considered acceptable by the agency.

This new guidance applies to Part 91, 91K, 121, 125 and 135 operators, but only 91K through 135 operators are required to seek FAA approval of their EFB programs. Part 91 operators can use EFBs as they wish, without formal approval, and many pilots have been using geo-referenced moving maps and approach charts to aid situational awareness since the iPad entered the market in 2010.

In an effort to quell the use of own-ship position displays while flying, the FAA encouraged EFB app developers to add a switch to turn off geo-referencing.

Under the new version of the AC, the FAA said it “is removing its previous prohibition on the display of aircraft location during flight on various EFB applications. Previously, this function was available only on the ground.”

The other significant update is that operators will be able to make changes to their EFB programs without contacting their FAA principal inspector, according to the FAA. Previously, if an operator wanted to use a new feature in an updated version of the app, then coordination with the principal inspector was required.

The FAA explained the other changes: “Specifically, the new policy eliminates all guidance associated with EFB classification, clarifies the definition of an ‘EFB’ and reorganizes EFB application software types according to safety importance.”

This means no more EFB classes 1, 2 and 3. And the new definition of an EFB is simple: “a device displaying EFB applications.” EFB software application types are now categorized according to safety level, with A being the highest, followed by B.

Added Value for Operators

A variety of stakeholders helped the FAA craft the new EFB guidance, including other regulators, the ICAO Operations Panel and industry participants, such as app developer ForeFlight.

According to ForeFlight co-founder and CEO Tyson Weihs, the new guidance will be a huge benefit for professional pilots “in operations that previously were unable to utilize own-ship position due to the restrictions imposed by prior ACs.”

Pilots have been enjoying the benefits of own-ship position since the iPad brought tablet computers into widespread use. “Nearly every pilot flying with an iPad since then has observed first hand the benefits that own-ship provides—situational awareness on a taxi chart, approach plate or en route—and especially when paired with in-flight weather receivers,” he said.

What helped convince the FAA to make the switch concerning own-ship position display is that companies such as ForeFlight designed the apps to assess the quality of position information. Weihs explained, “What the FAA saw—with input from industry and operators—was that there are sufficient ways to mitigate the concerns they had about display of own-ship position. I think they also understood the value, but they had to get comfortable [with] the ways that companies like ForeFlight use information about the quality of the position source/information to remove own-ship position from the display when the GPS accuracy [quality of the position information] exceeded a threshold.”

Weihs sees the FAA’s move as a huge boon for commercial operations. “This paves the way to unlocking substantial value from flight apps like ForeFlight or Jeppesen FliteDeck Pro,” he noted. (The two companies are working together under an alliance agreement.)

Many other EFB app developers will benefit from this new FAA guidance, for example, Honeywell and its GoDirect FlightBag Pro app, which combines flight planning with performance calculations and real-time weather updates, as well as display of own-ship position on a moving-map. The combination of powerful EFBs with growing availability of airborne Internet connectivity on many aircraft gives pilots access to an extraordinary amount of useful information.

“Now that pro-operators can display own-ship in all phases of flight,” Weihs continued, “apps can assist with tasks like inflight re-planning from present position to destination when combined with our high-performance flight planning engine, identify paths around weather, advise the pilot on route changes or altitude changes for smoother rides, pro-actively enable flight crews to request re-routes based on weather, and most importantly, show pilots where they are in relation to radar echoes, icing and turbulence. The value this could unlock for flight operations is easily measured in the billions of dollars, globally.”
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Old 11-18-2017, 08:53 PM   #2  
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Difference on the FAA side is they will no longer be approving devices, they will be approving operators EFB programs, including training, maintenance, procedures, etc. Similar to what they were doing before, but now they don't need to know what device/software and reference that to see if it's authorized, the operators EFB program will take care of that.
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Old 11-24-2017, 06:19 AM   #3  
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Gee. That did not take long.
Way overdue and a great aid to SA. In addition to in air SA, helps with confusing airports or low visibility. I’ve seen commercial airliners make wrong turns before during Cat II operations and almost got hit by one. It took a quick call by ground to tell me to stop immediately or we might have been hit once at DTW.
Also, long overdue for the ability to access NEXRAD. Yes, it has limitations, but so does on board radar.
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Old 11-24-2017, 06:37 PM   #4  
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Ownship eats battery power like no tomorrow.
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Old 11-24-2017, 07:44 PM   #5  
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Originally Posted by Packrat View Post
Ownship eats battery power like no tomorrow.
Yes, needs to be plugged in, or have an external battery.
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Old 11-25-2017, 02:21 PM   #6  
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I had charts with own-ship symbol displayed on any georeferenced-chart, years ago. Worked wonderfully and rarely opened the iPad except to confirm chart validity. IIRC, it was approved about 8 years ago.

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Old 11-26-2017, 07:18 AM   #7  
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There have been some TSO,d installations with own-ship for many years now. The issue that AIR (aircraft certification) reference the pervious version of the Advisory Circular that prohibited own-ship was that the position information for “own ship” may be coming from a different source (EFB) than the GPS sensor used in the aircraft’s certified avionics. Now that the AC has been rewritten, the onus is on the operator/PIC to validate and confirm the position accuracy of the own-ship displayed GPS position is acceptable.
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Old 11-26-2017, 07:43 AM   #8  
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But if the “own ship” is displayed in the MFD, like most corporate jets have, the position comes from the same source as the ND and the FMS. Using an iPad is rare.

And it’s all TSO’d on a Part 25 plane
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