SF340 CAPTAIN ADVISES COMPANY FLT PLANS DO NOT INCLUDE ALL FMS WAYPOINTS NECESSARY TO PROGRAM FILED/CLEARED ROUTES.

Date: 2007-09 · Aircraft: SF 340B · Phase: takeoff

Anomalies: aircraft-equipment-problem-less-severe

Synopsis

SF340 CAPTAIN ADVISES COMPANY FLT PLANS DO NOT INCLUDE ALL FMS WAYPOINTS NECESSARY TO PROGRAM FILED/CLEARED ROUTES.

Narrative

WHILE THE CREW WAS ENTERING WAYPOINTS INTO THE FMS; I NOTICED THAT THE COMPUTERIZED FLT PLAN WAS MISSING 2 FIXES ON THE ERRTH 1 SID FROM DTW. THE COMPUTERIZED FLT PLAN LISTED THE RTE AS DTW-ERRTH-CXR; ETC; WHILE THE SID ACTUALLY HAS DTW-RICPO-OCTAS-ERRTH-CXR; ETC. AT OCTAS; THERE IS A COURSE CHANGE FROM DXO R-095 TO YQR R-101. THE COMPUTERIZED FLT PLAN MISSES THIS TURN ALTOGETHER; AND A CREW FOLLOWING THE COMPUTERIZED FLT PLAN WOULD NOT BE FOLLOWING THE SID. I HAVE PERSONALLY BROUGHT THIS TYPE OF ERROR TO DISPATCH'S ATTN NUMEROUS TIMES; AND HAVE BEEN MET WITH ANNOYANCE ON THEIR PART. I WAS TOLD THAT WE SHOULD 'JUST FOLLOW THE CHART' AND THAT THE COMPUTERIZED FLT PLAN WAS 'GOOD ENOUGH.' I DISAGREE. FOLLOWING THE COMPUTERIZED FLT PLAN COULD LEAD A CREW TO A VIOLATION AND/OR REDUCED SEPARATION AND SAFETY. I BELIEVE THAT I HAVE BEEN LUCKY; SO FAR. BEING A DTW BASED PLT; I AM FAMILIAR WITH THE SID'S AND I HAVE DETECTED THE ERRORS. A NEW PLT; OR A PLT FROM ANOTHER BASE MIGHT MAKE THE 'MISTAKE' OF FOLLOWING THE FLT PLAN AND GETTING THEMSELVES INTO TROUBLE. THIS DISPATCH FLT PLAN IS LEADING FLT CREWS DOWN A DANGEROUS PATH. EVEN FOLLOWING THE BELOW INFO; YOU WOULD NOT DETECT THE FLT PLAN'S ERRORS; HENCE; THE NEED TO FIX THE 'CANNED DEPS' NOW. TAKE NOTE OF THIS EXCERPT FROM GUIDANCE ON HOW TO NOT MAKE THIS ERROR: 'IF YOU ARE CLRED 'AS FILED;' MAKE SURE TO VERIFY YOUR FMS WAYPOINTS BY USING THE COMPUTERIZED FLT PLAN PORTION OF YOUR DISPATCH RELEASE; AND NOT JUST THE RELEASE ITSELF. THE COMPUTERIZED FLT PLAN LISTS EACH AND EVERY WAYPOINT YOU MUST INCLUDE IN THE FMS; WHILE THE RELEASE ITSELF ONLY SHOWS THE WAY THE FLT PLAN WAS FILED WITH ATC.' THE COMPANY HAS SEEN A DRAMATIC RISE IN THE NUMBER OF RPTS FOR CLRNC DEVS; PARTICULARLY WHILE FLYING THE MAARS 1 DEP OUT OF DTW. IT APPEARS THAT CREWS ARE PROCEEDING FROM MAARS INTXN DIRECT TO THE ACO VOR WITHOUT FIRST PROCEEDING TO SPHRE INTXN. THIS IS MOST LIKELY THE RESULT OF NOT PROGRAMMING SPHRE INTXN INTO THE FMS. PLEASE REMEMBER PRIOR TO DEP TO VERIFY THAT THE FMS WAYPOINTS MATCH EXACTLY WITH YOUR ATC CLRNC; AND NOT JUST THE FILED FLT PLAN. IF YOU ARE CLRED 'AS FILED;' MAKE SURE TO VERIFY YOUR FMS WAYPOINTS BY USING THE COMPUTERIZED FLT PLAN PORTION OF YOUR DISPATCH RELEASE; AND NOT JUST THE RELEASE ITSELF. THE COMPUTERIZED FLT PLAN LISTS EACH AND EVERY WAYPOINT YOU MUST INCLUDE IN THE FMS; WHILE THE RELEASE ITSELF ONLY SHOWS THE WAY THE FLT PLAN WAS FILED WITH ATC. THE FILED FLT PLAN ON THE RELEASE DOES NOT NECESSARILY SHOW ALL THE WAYPOINTS YOU NEED TO NAV TO; AND COULD CAUSE YOU TO HAVE A CLRNC DEV. AS ANOTHER REMINDER; THE FOM NOW REQUIRES THAT ANY TIME YOU RECEIVE A RERTE (DISPATCH REFILES YOU OR YOU GET A RERTE DUE TO WX); YOU MUST ASK ATC FOR A FULL RTE CLRNC. WHEN A CHANGE TO YOUR CLRNC IS MADE; IT IS IMPERATIVE THAT YOU GET A FULL RTE CLRNC SO YOU KNOW EXACTLY WHAT CHANGES ARE MADE. WHEN DISPATCH OR ATC CHANGES YOUR FILED FLT PLAN; YOUR COMPUTERIZED FLT PLAN IS NO LONGER ACCURATE AND COULD LEAD TO NAV ERRORS. THE AUTOMATION SUPVR DOES NOT SEEM TO APPRECIATE THAT ALL FIXES NEED TO BE IN THE COMPUTERIZED FLT PLAN FOR IT TO BE VALID. THIS IS THE ONE PIECE OF PAPER THAT CREWS ACTUALLY USE TO PLUG POINTS INTO THE FMS. IF THE INFO DOES NOT INCLUDE THE REQUIRED POINTS; THEN IT REDUCES SAFETY. I CAN THINK OF NO GOOD REASON WHY THE ENTIRE FLT PAN IS NOT INCLUDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE REPORTER ADVISED THE FMS ON THESE AIRPLANES WAS INSTALLED ONLY FOUR MONTHS AGO AND IS LIMITED IN ITS FUNCTIONALITY. NO SID OR STAR INFORMATION IS LINE SELECTABLE AND THERE IS NO PROVISION FOR COMPANY STORED ROUTES FOR COMMONLY FLOWN SEGMENTS. THERE IS; HOWEVER; A MEANS AVAILABLE FOR A FLT CREW TO ENTER A COMPLETED SEGMENT TO THE DATABASE THAT IS THEN SELECTABLE BY SUBSEQUENT FLT CREWS ON THE SAME ROUTE. THE OBVIOUS POTENTIAL FOR A COMPOUNDED ERROR (THE LATER FLT CREW SELECTING A FLAWED ROUTE INSTALLED BY THE EARLIER) IS PROCEDURALLY ADDRESSED BY AN SOP REQUIRING SUBSEQUENT USERS TO VERIFY THE ROUTE FIX BY FIX. REPORTER EMPHASIZED THAT THE LACK OF ANY LINE SELECTABLE PROCEDURES IS THE PRIMARY PROBLEM WHICH REQUIRES; HE BELIEVES; THAT THE FLT PLANS INCLUDE ALL WAYPOINTS INCLUDING THOSE ON SIDS OR STARS.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.