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An air carrier pilot discovered that his aircraft's FMC installation only contained the fco ILS Z runway 16R approach which has a different missed approach procedure than the ILS Y runway 16R. Neither the FMC nor other publications stated that the only installed approach corresponded to the ILS 16R Z approach.
| Attributes | |
| ACN | 843423 |
| Time | |
| Date | 200907 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | LIRF.ARTCC |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Check Pilot Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 170 Flight Crew Total 17000 Flight Crew Type 4000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
There are 2 ILS approach procedures for runway 16 right at fco: ILS Z 16R and ILS Y 16R. There is only one ILS 16R choice in the FMC and it is actually the ILS Z 16R approach. The difference between the Z and Y approaches is the missed approach as far as i can see. So here is a potential scenario. The crew is cleared the ils y 16r approach and selects the ILS 16R from the box. The crew then goes missed approach and selects LNAV. The crew will then fly the wrong missed approach. A safety issue. Recommendations. 1. A NOTAM. 2. Put this information on the arrival portion of the detailed airport page. 3. Review all our airports for approaches that are similarly named but with differences and annotate the differences on the detail airport pages.
Original NASA ASRS Text
Title: An air carrier pilot discovered that his aircraft's FMC installation only contained the FCO ILS Z RWY 16R approach which has a different missed approach procedure than the ILS Y RWY 16R. Neither the FMC nor other publications stated that the only installed approach corresponded to the ILS 16R Z approach.
Narrative: There are 2 ILS approach procedures for Runway 16 right at FCO: ILS Z 16R and ILS Y 16R. There is only one ILS 16R choice in the FMC and it is actually the ILS Z 16R approach. The difference between the Z and Y approaches is the missed approach as far as i can see. So here is a potential scenario. The crew is cleared the ils y 16r approach and selects the ILS 16R from the box. The crew then goes missed approach and selects LNAV. The crew will then fly the wrong missed approach. A safety issue. Recommendations. 1. A NOTAM. 2. Put this information on the arrival portion of the detailed airport page. 3. Review all our airports for approaches that are similarly named but with differences and annotate the differences on the detail airport pages.
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.