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A B777 captain reported that his lax ILS 25L approach plate indicated hard altitudes for fixes inside of luvyn while the FMC indicated at or above at the same fixes.
| Attributes | |
| ACN | 841529 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAX.Airport |
| State Reference | CA |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Experience | Flight Crew Last 90 Days 240 Flight Crew Total 21000 Flight Crew Type 3000 |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
The FMC database shows all altitudes from luvyn to hunda with an a after the altitude but the 25L ILS approach plate shows the same altitudes as hard altitudes without the above so I was following the VNAV path which kept me about 300 to 400 ft above the chart number so when I found the discrepancy near hunda I still don't know if I violated the altitudes since I don't know whether the FMC database or the 25L approach chart is correct.
Original NASA ASRS Text
Title: A B777 Captain reported that his LAX ILS 25L approach plate indicated hard altitudes for fixes inside of LUVYN while the FMC indicated AT or ABOVE at the same fixes.
Narrative: The FMC database shows all altitudes from LUVYN to HUNDA with an A after the altitude but the 25L ILS approach plate shows the same altitudes as hard altitudes without the above so I was following the VNAV PATH which kept me about 300 to 400 FT above the chart number so when I found the discrepancy near HUNDA I still don't know if I violated the altitudes since I don't know whether the FMC database or the 25L approach chart is correct.
Data retrieved from NASA's ASRS site as of April 2012 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.