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An MD80 flight crew turned the wrong way entering a holding pattern after the FMS display error indicated the correct pattern.
| Attributes | |
| ACN | 702450 |
| Time | |
| Date | 200607 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : sps.vortac |
| State Reference | TX |
| Altitude | msl single value : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : holding |
| Route In Use | arrival : holding pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 702450 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 702449 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued alert flight crew : returned to assigned airspace |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Ambiguous |
Narrative:
Entering holding as published at sps; aircraft made a right turn and tried to enter holding on wrong side of pattern. FMS was in operation; we noticed after ATC brought turn to our attention the holding pattern was depicted correctly on 80+ mi range but incorrectly at lesser ranges. We had to enter holding manually and entered it incorrectly first time so perhaps there were 2 holding patterns loaded. We should have realized plane was turning the wrong way but the picture looked correct. I've used GPS for holding many times in the past with no problem; so was complacent and expected GPS to do a proper job. Supplemental information from acn 702449: re-entered holding pattern in the FMS; and still found incorrect depiction on 40 mi range. Re-entered pattern in the FMS again; and finally got the correct depiction both on long and short-range. Xchk I guess from plate to FMS. But we did that. Just changed to short-range with confidence in the FMS and then began descending and turning.
Original NASA ASRS Text
Title: AN MD80 FLT CREW TURNED THE WRONG WAY ENTERING A HOLDING PATTERN AFTER THE FMS DISPLAY ERROR INDICATED THE CORRECT PATTERN.
Narrative: ENTERING HOLDING AS PUBLISHED AT SPS; ACFT MADE A R TURN AND TRIED TO ENTER HOLDING ON WRONG SIDE OF PATTERN. FMS WAS IN OP; WE NOTICED AFTER ATC BROUGHT TURN TO OUR ATTN THE HOLDING PATTERN WAS DEPICTED CORRECTLY ON 80+ MI RANGE BUT INCORRECTLY AT LESSER RANGES. WE HAD TO ENTER HOLDING MANUALLY AND ENTERED IT INCORRECTLY FIRST TIME SO PERHAPS THERE WERE 2 HOLDING PATTERNS LOADED. WE SHOULD HAVE REALIZED PLANE WAS TURNING THE WRONG WAY BUT THE PICTURE LOOKED CORRECT. I'VE USED GPS FOR HOLDING MANY TIMES IN THE PAST WITH NO PROB; SO WAS COMPLACENT AND EXPECTED GPS TO DO A PROPER JOB. SUPPLEMENTAL INFO FROM ACN 702449: RE-ENTERED HOLDING PATTERN IN THE FMS; AND STILL FOUND INCORRECT DEPICTION ON 40 MI RANGE. RE-ENTERED PATTERN IN THE FMS AGAIN; AND FINALLY GOT THE CORRECT DEPICTION BOTH ON LONG AND SHORT-RANGE. XCHK I GUESS FROM PLATE TO FMS. BUT WE DID THAT. JUST CHANGED TO SHORT-RANGE WITH CONFIDENCE IN THE FMS AND THEN BEGAN DSNDING AND TURNING.
Data retrieved from NASA's ASRS site as of January 2009 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.