• Recent flights over Lake Arrowhead
• Recent night flights over Lake Arrowhead
• Violations of the FAA 2018-01-25 announcement
• Approach routes into Ontario
• download csv data file
• Some flight path statistics
• Questions for the FAA and SB County
• 5 minute video showing multiple aircraft over Lake Arrowhead
• 2 minute video showing the change in flight patterns over Lake Arrowhead over the last two years

---

• Questions for the FAA
• Questions for SB County

Questions for the FAA

1. Between 11pm and 7am, large aircraft are supposed to use the JCKIE1 route rather than EALGZ. How was that decision communicated to the transport pilots, and is there any enforcement of that? Consider Southwest 3154 DEN->ONT 2018-08-27 scheduled landing at 11:30pm. How/why did that pilot file a flight plan using EAGLZ? The actual track shows them flying somewhere between the JCKIE1 and EAGLZ2 routes, about 500 feet lower than JCKIE1.
2. The purpose of the JCKIE route was to reduce the noise level over Lake Arrowhead at night. Is there any enforcement for deviations from that route? Consider UPS 928 RFD->ONT 2018-08-31 scheduled landing at 3:23am. That pilot filed a flight plan using JCKIE, and the actual track shows them starting exactly on JCKIE1, but then flying about a mile west and 1100 feet lower than JCKIE1. ATC (SOCAL) might have required that diversion to the west due to conflicting air traffic, but this video does not show any other large aircraft in the vicinity at the time. Note that there may have been conflicts with small slow moving aircraft that our data system is ignoring.
3. How was the decision to use JCKIE1 after 11pm communicated to the ATC controllers? Is there any mechanism to require those controllers to keep large aircraft away from Lake Arrowhead at night?
4. How much separation (horizontally and vertically) is required between two routes so they don't conflict? Is the movement from ZIGGY7 to EAGLZ2 driven by conflicts with DSNEE? Note that there is almost no traffic on DSNEE after 10pm due to the noise restrictions at SNA.
5. Regarding page 8 of the FAA 2018-01-25 presentation at Lake Arrowhead - what is the meaning of the deep purple squiggle? It seems to be unrelated to any highway or flight track.
6. A comment regarding page 9 of that same 2018-01-25 presentation - "The JCKIE flight track falls within historical ZIGGY flight tracks". Yes, the JCKIE1 track is within historical ZIGGY7, if you only include the part south of Highway 18. The location of Lake Arrowhead is nicely obscured by covering it with all the green flight tracks. See this for more details.

Questions for SB County

1. The noise abatement procedures at SNA (John Wayne) are required by the General Aviation Noise Ordinance adopted by Orange County. It would seem that San Bernardino County could adopt a similar ordinance to limit the allowable noise levels at Lake Arrowhead. That should include penalties for violations similar to the penalties imposed by Orange County.
2. SNA is owed by Orange County, which may make it easier for Orange County to impose noise limits. However, ONT is owed by OIAA, an Authority created via a Joint Powers Agreement between the City of Ontario, and SB County. That probably allows SB County to impose similar noise limits on ONT flights.
3. Although SNA arrivals are allowed up to 11pm, there are very few aircraft on the SNA/DSNEE route after 10pm. These maps show that DSNEE route gets about one flight per day after 10pm. So if all the night flights (10pm to 6am) currently using EAGLZ and JCKIE were moved back to the old ZIGGY route, there would not be much conflict with DSNEE.