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Air carrier captain advises the FMC database in his aircraft type misprograms the altitudes on the map procedures on the sea ILS 34L&C approaches stating the intermediate fixes (wexub/34L coyla/34C) and are to be crossed at or above 3;000 MSL while the texts of both procedures state that the climb to 5;000 should begin at those fixes; thus requiring 3;000 MSL to not be exceeded until passing.
| Attributes | |
| ACN | 1081663 |
| Time | |
| Date | 201304 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | S46.TRACON |
| State Reference | WA |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Navigation Database |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Please check out the recently revised ILS approaches to rwy 34 left & C at seattle. It appears to me that their missed approaches are not properly coded in the FMC database. There are fixes that the narratives say should be crossed at 3;000 ft; then climb to 5;000. The fmcs show 3000A; but should be 3000B. I see nothing in our flight paperwork referencing this.
Original NASA ASRS Text
Title: Air carrier Captain advises the FMC database in his aircraft type misprograms the altitudes on the MAP procedures on the SEA ILS 34L&C approaches stating the intermediate fixes (WEXUB/34L COYLA/34C) and are to be crossed at or ABOVE 3;000 MSL while the texts of both procedures state that the climb to 5;000 should begin at those fixes; thus requiring 3;000 MSL to not be exceeded until passing.
Narrative: Please check out the recently revised ILS approaches to Rwy 34 L & C at Seattle. It appears to me that their missed approaches are not properly coded in the FMC database. There are fixes that the narratives say should be crossed at 3;000 FT; THEN climb to 5;000. The FMCs show 3000A; but should be 3000B. I see nothing in our flight paperwork referencing this.
Data retrieved from NASA's ASRS site as of July 2013 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.