Summary of the First Meeting Special Committee 227 ... - RTCA
Summary of the First Meeting Special Committee 227 ... - RTCA
Summary of the First Meeting Special Committee 227 ... - RTCA
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Sharing <strong>of</strong> common flight plan between air and ground (ADS-C EPP) is <strong>the</strong> key to TBO.<br />
Datalink is <strong>the</strong> enabler.<br />
RTA is one piece <strong>of</strong> <strong>the</strong> puzzle, but <strong>the</strong>re are concerns about different solutions affecting separation.<br />
Deterministic LNAV and VNAV is required.<br />
Lessons learned<br />
Not being tied out with SC159 really hurt<br />
o SC214 is strikingly similar situation, is data link driving nav/guidance<br />
o Security, this is more than data, it’s <strong>the</strong> expanding scope <strong>of</strong> security into operations.<br />
o ADS-B impact to navigation is ano<strong>the</strong>r area.<br />
Nav world was and still is split between GPS/WAAS and RNP SC’s<br />
o Not close to being harmonized<br />
o Full time RNP vs. RNP RNAV<br />
o AR RNP vs. non-AR RNP<br />
We should have dealt more with classic procedures and use <strong>of</strong> <strong>the</strong> RNP concept<br />
Need to tie out CAAs<br />
We need to make it so pilots can understand this stuff<br />
Problematic areas in SC181, still need to be addressed<br />
o Offsets<br />
o Temp Comp<br />
o VNAV<br />
o Fixed radius transitions<br />
• Started simple – name <strong>of</strong> airway indicated<br />
o RNP holds<br />
o Integrity<br />
o Accuracy models<br />
o Flight deck annunciations<br />
How things evolved<br />
Evolve existing concept <strong>of</strong> RNAV into RNP RNAV<br />
Wanted to avoid sensor-based procedures<br />
Break into logical pieces<br />
o UI<br />
o Performance<br />
o<br />
o<br />
Path definition / path guidance<br />
Spin-<strong>of</strong>fs<br />
• DO200, DO 201, VNAV, TOAC, DO -283<br />
What’s <strong>the</strong> same<br />
Nakamura still trying to maintain order<br />
Classic procedures (VOR, etc.) cause 99% <strong>of</strong> <strong>the</strong> problems for FMS<br />
The transition period will always be <strong>the</strong>re – mixed equipage<br />
It still costs more to change <strong>the</strong> airside than <strong>the</strong> ground side<br />
The editing process is painful – get draft sections out early and <strong>of</strong>ten<br />
o 10% do 90% <strong>of</strong> <strong>the</strong> work, and attend <strong>the</strong> meetings<br />
o The rest will send comments only after <strong>the</strong> draft is out<br />
What’s different<br />
Data link!<br />
Vertical situation displays<br />
RTA trials<br />
SESAR / NextGen<br />
Integrated cockpits are <strong>the</strong> norm now<br />
o SVS, TAWS, ADS-B<br />
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