Trajectory-Based Operations (TBO) - Joint Planning and ...
Trajectory-Based Operations (TBO) - Joint Planning and ...
Trajectory-Based Operations (TBO) - Joint Planning and ...
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<strong>Trajectory</strong>-<strong>Based</strong> <strong>Operations</strong> (<strong>TBO</strong>)<br />
Study Team Report<br />
Recommendation <strong>TBO</strong>-8<br />
The closed-loop approach to <strong>TBO</strong> is predicated on messaging between air <strong>and</strong> ground. Information in<br />
these messages needs to be defined. The <strong>TBO</strong> Study Team recommends that the record layout for the<br />
flight object <strong>and</strong> the 4DT transmittal, acknowledgement, input, execution, <strong>and</strong> transmittal of that<br />
execution be defined in terms of information needed for automation, not just a replacement for a voice<br />
clearance. The message length, bit content, update cycles, <strong>and</strong> authentication overhead for security<br />
must be defined, so as to properly size the data link. As stated previously, the exchange of information<br />
must have the same structure for all aircraft participating in <strong>TBO</strong>.<br />
18.5 Flight <strong>Planning</strong> Needs Strengthening in the ConOps<br />
The existing NextGen ConOps needs additional concepts explaining future flight planning activities in<br />
NextGen. <strong>TBO</strong> starts with a desired business trajectory. It may require trial planning that leads to<br />
negotiation between the operator/user <strong>and</strong> the ANSP over system constraints <strong>and</strong> preferences. The<br />
JPDO recognizes that a gap exists <strong>and</strong> that there is a need to add greater definition of the relationship<br />
between flight planning <strong>and</strong> the ANSP. While research <strong>and</strong> development will define most of the new<br />
concepts in flight planning, a starting point is needed that describes the relationship between the<br />
operator/user <strong>and</strong> the ANSP.<br />
Recommendation <strong>TBO</strong>-9<br />
Create a new operational improvement <strong>and</strong> supporting enablers around flight planning activities that<br />
leverage network-centric operations <strong>and</strong> provide the foundation for laying out the exchange of<br />
information between the operator/user <strong>and</strong> the ANSP, negotiation of the trajectory, <strong>and</strong> the enabling<br />
services required to be developed so that <strong>TBO</strong> can proceed. The following is recommended:<br />
The airlines can provide improvements to CATM <strong>and</strong> related processes through improved<br />
flight planning systems <strong>and</strong> communications. The results of these changes can reduce costs to<br />
all operators <strong>and</strong> provide greater efficiency. The key enablers are with operators, aircraft, <strong>and</strong><br />
the ANSP, including flight-planning systems, data communications, <strong>and</strong> enhanced weather<br />
sensors. Weather forecast tools, combined with enhanced decision support tools, will provide<br />
upgrades in aircraft, ANSP <strong>and</strong> AOC information exchange, access, <strong>and</strong> throughput. These<br />
capabilities provide direct <strong>and</strong> indirect benefits to all operators with improved overall<br />
efficiency. This solution set covers strategic <strong>and</strong> tactical flow management, with continuous<br />
flight-day evaluations including routine <strong>and</strong> critical interactions with operators, specifically<br />
AOC, to mitigate situations when the optimum desired use of capacity cannot be<br />
accommodated. CATM solution set reviews current <strong>and</strong> future capacity, flow, <strong>and</strong> weather to<br />
make capacity adjustments to shift dem<strong>and</strong> to alternate resources—routings, altitudes, times,<br />
<strong>and</strong>/or dem<strong>and</strong>.<br />
Performance analysis, where throughput is constrained, is the basis for strategic user requests<br />
<strong>and</strong> operations resource planning. Continuous real-time flight day evaluations of constraints are<br />
provided to ANSP traffic management decision-support tools <strong>and</strong> users such as the AOC.<br />
Flight day evaluation metrics are complementary <strong>and</strong> consistent with collateral sets of metrics<br />
for airspace, airport, <strong>and</strong> flight operations to meet stakeholder dem<strong>and</strong> while ensuring the<br />
highest level of safety, throughput, <strong>and</strong> regulatory compliance.<br />
<strong>Joint</strong> <strong>Planning</strong> <strong>and</strong> Development Office<br />
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