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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An intersection which was not in the stored flight plan was inserted in the INS routing, but inserted in the wrong place. Then, when the aircraft passed a check point, it started to turn back to the intersection instead of the correct fix. Flight crew contacted controller who aided them getting back on course.
| Attributes | |
| ACN | 339880 |
| Time | |
| Date | 199606 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : lrp |
| State Reference | PA |
| Altitude | msl bound lower : 28000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | DC-8 60 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 9000 flight time type : 2000 |
| ASRS Report | 339880 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were flying out of newark on a SID and eventually cleared direct on course. The course was parke J6 to charleston. When the INS was programmed and the stored flight plan was pulled up, the listed points were parke, landcaster, martinsburg, etc. The flirt intersection was not on the stored flight plan and the first officer who was flying decided he wanted it in his flight plan. He inserted flirt checked the coords and we went flying. Now as we were flying from parke on the airway we didn't realize he inserted the intersection flirt between parke and landcaster instead of between landcaster and martinsburg. So when we passed flirt the aircraft started a left turn back to landcaster. We knew the aircraft shouldn't be turning at this time because mrb VOR was still in front of us. We took the aircraft off INS navigation went to heading, talked to center and got back on course. We were about 4 mi left of centerline maximum deviation. There were no other aircraft in the area. The controller said there was no problem as far as they were concerned. It took us a couple of mins to figure out why the INS was trying to turn the aircraft. The moral of this is not only check the coords of a waypoint but be sure you insert it in the proper place in the flight plan.
Original NASA ASRS Text
Title: AN INTXN WHICH WAS NOT IN THE STORED FLT PLAN WAS INSERTED IN THE INS ROUTING, BUT INSERTED IN THE WRONG PLACE. THEN, WHEN THE ACFT PASSED A CHK POINT, IT STARTED TO TURN BACK TO THE INTXN INSTEAD OF THE CORRECT FIX. FLC CONTACTED CTLR WHO AIDED THEM GETTING BACK ON COURSE.
Narrative: WE WERE FLYING OUT OF NEWARK ON A SID AND EVENTUALLY CLRED DIRECT ON COURSE. THE COURSE WAS PARKE J6 TO CHARLESTON. WHEN THE INS WAS PROGRAMMED AND THE STORED FLT PLAN WAS PULLED UP, THE LISTED POINTS WERE PARKE, LANDCASTER, MARTINSBURG, ETC. THE FLIRT INTXN WAS NOT ON THE STORED FLT PLAN AND THE FO WHO WAS FLYING DECIDED HE WANTED IT IN HIS FLT PLAN. HE INSERTED FLIRT CHKED THE COORDS AND WE WENT FLYING. NOW AS WE WERE FLYING FROM PARKE ON THE AIRWAY WE DIDN'T REALIZE HE INSERTED THE INTXN FLIRT BTWN PARKE AND LANDCASTER INSTEAD OF BTWN LANDCASTER AND MARTINSBURG. SO WHEN WE PASSED FLIRT THE ACFT STARTED A L TURN BACK TO LANDCASTER. WE KNEW THE ACFT SHOULDN'T BE TURNING AT THIS TIME BECAUSE MRB VOR WAS STILL IN FRONT OF US. WE TOOK THE ACFT OFF INS NAV WENT TO HDG, TALKED TO CTR AND GOT BACK ON COURSE. WE WERE ABOUT 4 MI L OF CTRLINE MAX DEV. THERE WERE NO OTHER ACFT IN THE AREA. THE CTLR SAID THERE WAS NO PROB AS FAR AS THEY WERE CONCERNED. IT TOOK US A COUPLE OF MINS TO FIGURE OUT WHY THE INS WAS TRYING TO TURN THE ACFT. THE MORAL OF THIS IS NOT ONLY CHK THE COORDS OF A WAYPOINT BUT BE SURE YOU INSERT IT IN THE PROPER PLACE IN THE FLT PLAN.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.