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A B737 first officer (PF) descended below the floor of class B airspace while on a visual approach. The flight crew was originally on the ILS for runway 25R, but they were switched to a visual approach to runway 25L with the ILS OTS, thus losing vertical guidance.
| Attributes | |
| ACN | 331480 |
| Time | |
| Date | 199603 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : las |
| State Reference | NV |
| Altitude | msl bound lower : 7600 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : las tower : ict |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 5000 |
| ASRS Report | 331480 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
First officer flew below class B airspace about 400 ft while aircraft was on visual approach. Captain was performing other duties. Had been on GS for runway 25R -- switched to visual runway 25L (ILS OTS). First officer (flying) continued to descend. Captain told him that there was class B airspace and to stop descent and climb to floor of TCA.
Original NASA ASRS Text
Title: A B737 FO (PF) DSNDED BELOW THE FLOOR OF CLASS B AIRSPACE WHILE ON A VISUAL APCH. THE FLC WAS ORIGINALLY ON THE ILS FOR RWY 25R, BUT THEY WERE SWITCHED TO A VISUAL APCH TO RWY 25L WITH THE ILS OTS, THUS LOSING VERT GUIDANCE.
Narrative: FO FLEW BELOW CLASS B AIRSPACE ABOUT 400 FT WHILE ACFT WAS ON VISUAL APCH. CAPT WAS PERFORMING OTHER DUTIES. HAD BEEN ON GS FOR RWY 25R -- SWITCHED TO VISUAL RWY 25L (ILS OTS). FO (FLYING) CONTINUED TO DSND. CAPT TOLD HIM THAT THERE WAS CLASS B AIRSPACE AND TO STOP DSCNT AND CLB TO FLOOR OF TCA.
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.