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intended purpose of the Aeronautical Charting Forum (ACF) item, but further discussion is required, and our input has been sent back to the ACF. Departure Criteria Working Group (DWG) We met in Oklahoma City on Sept. 25-27 to discuss departure criteria for Standard Instrument Departures (SIDs) and Obstacle Departure Procedures (ODPs). No changes or agreements were accomplished during this meeting. Our next meeting will be held via teleconference during the week of October 8. Pilot Controller Procedures & Systems Integration (PCPSI) Our next meeting is being held in Henderson, Nev., on October 30-31. PARC NAV WG We met via teleconference on Sept. 26 and discussed the following: • Final to Miss OCS Transition (Work Session): Gary Petty (AFS) walked the group through a draft proposal for changes to the RNP AR vertical criteria when transitioning from final to a missed approach segment. The method was generally agreed to by the participants in the meeting, however, Gary listed four items (questions) at the end that resulted in discussion: o There is a potential to reduce the size of the VEB by modifying the 1.225 multiplier used on RNP to calculate the possible ANPE. The 1.225 essentially scales the 2-sigma (95 percent) error represented by RNP to a 3-sigma value to match the rest of the VEB values. The question probably is "does RNP represent the error or should we use some average ANP value to represent the navigation error in this computation?" The argument has been going on since the beginning. o Should there be an addition to height loss if final segments are steeper than some value? Group discussion supported the idea, so Gary will look at the ICAO method to determine whether or not to include it in our recommendation. o Gary asked if the group still desires adding an RNP 0.3 line of minima calculated using LNAV/VNAV vertical criteria to RNP AR procedures where lower RNP values are presented. This resulted in a lot of discussion, as the desire is there but there are issues with its implementation. The group agreed that a team should develop a white paper, listing and attempting to solve these issues for the broader discussion in the F2F. o Allowing GLS and LPV minima on RNP charts was also brought up, but tabled for the time being, although it could be worked with the above topic. • TF Overlay for RF (Work Session): Mike Cramer (MITRE) reported that the PARC SG is planning to set up an action team to work through a sample location and operation. The aim of the action team would be to design the procedure(s) and then step through the process of creating an ARINC 424 file, generating airborne databases, and testing in engineering lab environments (e.g., Boeing, Rockwell, Garmin, Universal) to compare flight tracks and FMS compatibility. It could develop into some human-in-the-loop simulations as well. Mike asked for volunteers who could help with the work to join the

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