EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR; Inflight Event / Encounter Fuel Issue
Company Policy; Procedure
We were filed by Dispatch for and received clearance for the Shnon2 arrival into IAD; but Dispatch didn't plan fully for the fuel burn. The fuel planning stopped at ELISN; with a burn from ELISN to IAD of 17 LBS. It doesn't matter whether IAD is landing north or south; at ELISN there is a turn north or south to either MIKEJ or MATTC; that shouldn't be that hard to figure out. The actual burn for us from ELISN to IAD was 350 LBS. The total burn figured on the release was 9;825 LBS but the actual burn was 10;415 LBS because of all of the early descents given by ATC that are not figured in by Dispatch. If we would have taken off with min fuel; we would have landed with 1;630 LBS of fuel; less than emergency fuel.
ERJ170 Captain reports the flight planning software used by his company does not consider the entire arrival route and normal delays at large busy airports. The reporter routinely adds extra fuel for these flights.