Explanation of Changes

EXPLANATION OF CHANGES

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to the Office of Primary Interest (OPI)

1. 2–1–24. TRANSFER OF POSITION RESPONSIBILITY
   APPENDIX A. STARDARD OPERATING PRACTICE (SOP) FOR THE TRANSFER OF POSITION RESPONSIBILITY

   This change adds a new subparagraph to Appendix A, Standard Operating Practice (SOP) for the Transfer of Position Responsibility, under paragraph 5, Responsibilities. The new subparagraph e directs controllers to display the position relief checklist during all phases of the position relief briefing.

2. 2–3–5. AIRCRAFT IDENTITY
   2–4–20. AIRCRAFT IDENTIFICATION

   This change incorporates the procedures outlined in FAA Order JO 7110.127, National Airspace System (NAS) Processing of Foreign Aircraft Identifications with a Numeric Nationality Mark, into this order. It provides guidance to air traffic personnel to insert the letter “Q" at the beginning of the call sign for foreign aircraft whose flight identification begins with a number, so that the En Route Automation Modernization (ERAM), Standard Terminal Automation Replacement System (STARS), and Microprocessor En Route Automated Radar Tracking System (MEARTS) can process the flight plan.

3. 3–1–4. COORDINATION BETWEEN LOCAL AND GROUND CONTROLLERS
   3–1–7. POSITION DETERMINATION
   3–6–2. IDENTIFICATION
   3–10–7. LANDING CLEARANCE WITHOUT VISUAL OBSERVATION

   This change updates language to clarify that pilot/operator position reports may be used when determining the location of aircraft, vehicles, personnel, and equipment. Additionally, outdated National Airspace System (NAS) terminology has been removed and replaced with current references to Airport Surface Detection Equipment (ASDE) and Tower Display Workstations (TDWs), ensuring consistency with modern systems and operational practices.

4. 3–7–2 TAXI AND GROUND MOVEMENT OPERATIONS

   This change rearranges subparagraphs to help improve clarity. This change incorporates and cancels GENOT 25/29 N JO 7110.798, Taxi and Ground Movement Operations, which was effective August 12, 2025.

5. Editorial Changes

   Editorial changes include updating references of airlines no longer existing as well as standardizing the use of all capital letters for five‐letter fixes in examples and notes throughout the order; adding the missing note under FIG 3-9-9 to correct the print version; removing the term “decision height” and replacing it with “decision altitude” in for paragraphs 5–12–2, 5–12–6, and 5–12–7; replacing Center Radar Approach Control (CERAP) with Combined Control Facility (CCF) in TBL 1–2–1 and paragraph 5–5–4; and reintroducing the ability of the en route automation system to use targets derived from WAM and ADS-B for ATC services in subparagraph 5–1–2c.

6. Entire publication

   Additional editorial/format changes were made where necessary. Revision bars were not used because of the insignificant nature of these changes.