Evaluation of Modified Air Traffic Control Phraseology for Area Navigation (Rnav) Standard instrument Departure (Sid) Clearances Phase III: Operational Validation With Pilot Training Video

Area Navigation (RNAV) procedures are being designed and implemented for terminal departures and arrivals. Potential benefits of introducing these procedures include: 1) more fuel efficient and time saving routings 2) reduced dependence on radar vectoring, altitude and speed assignments that contribute to frequency congestion 3) more efficient use of inherently limited terminal airspace. As operational implementation of RNAV procedures began, analysis of occasional failures to comply with RNAV Standard Instrument Departure (SID) clearances focused attention on a number of issues. This study focused on issues involving Air Traffic Control (ATC) phraseology used for issuing clearances to join a departure route and for returning aircraft to SIDs, after issuing an altitude, speed, and/or heading change. In these cases, ATC may not have effectively communicated the intent of the issued instruction. The Pilot/Controller Phraseology and Procedures Action Team (P/CPP AT), under the Departure and Landing Workgroup of the Performance Based Operational Aviation Rulemaking Committee (PARC), addresses such pilot/controller procedure and phraseology issues. The P/CPP AT sponsored this study. They identified an operational need to establish Climb Via procedures and phraseology for SIDs, similar to the "descend via" procedures and phraseology currently in use for Standard Terminal Arrival (STAR\u2019s). Accordingly, the P/CPP AT drafted new procedures and phraseology for addition to FAA Order 7110.65, describing the Climb Via instructions. The proposed phraseology was developed to address potential misunderstandings of RNAV SIDs. As a result of this study, the proposed "Climb Via" phraseology was refined, and a Climb Via Pilot Informational video, was developed to clarify phraseology and procedure