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The reporting first officer of an S80 crew admitted to miscalculating the descent point, causing him to miss a crossing restr.
| Attributes | |
| ACN | 449010 |
| Time | |
| Date | 199909 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | intersection : bowie |
| State Reference | TX |
| Altitude | msl bound lower : 11000 msl bound upper : 24000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : descent cruise : enroute altitude change |
| Route In Use | arrival : profile descent |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : multi engine pilot : instrument |
| ASRS Report | 449010 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance non adherence : company policies non adherence : far non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Level at FL240 on the sps.UKW5, received clearance to intercept the TTT 306 degree radial inbound and cross bambe at 11000 ft. We were tracking the 306 degree radial inbound, first officer flying, captain working an 36 write-up. Still at FL240, we were advised by center that we were 20 mi north of bambe. Center assigned a descending 360 degree turn, after which we crossed bambe at 11000 ft. The first officer confused the TTT and ukw DME and thus miscalculated the descent point.
Original NASA ASRS Text
Title: THE RPTING FO OF AN S80 CREW ADMITTED TO MISCALCULATING THE DSCNT POINT, CAUSING HIM TO MISS A XING RESTR.
Narrative: LEVEL AT FL240 ON THE SPS.UKW5, RECEIVED CLRNC TO INTERCEPT THE TTT 306 DEG RADIAL INBOUND AND CROSS BAMBE AT 11000 FT. WE WERE TRACKING THE 306 DEG RADIAL INBOUND, FO FLYING, CAPT WORKING AN 36 WRITE-UP. STILL AT FL240, WE WERE ADVISED BY CTR THAT WE WERE 20 MI N OF BAMBE. CTR ASSIGNED A DSNDING 360 DEG TURN, AFTER WHICH WE CROSSED BAMBE AT 11000 FT. THE FO CONFUSED THE TTT AND UKW DME AND THUS MISCALCULATED THE DSCNT POINT.
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.