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An A300-600 flight crew on approach to mia descended below cleared altitude; at least in part because of distractions of 3 runway changes and significant WX on the approach path.
| Attributes | |
| ACN | 742711 |
| Time | |
| Date | 200706 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mia.airport |
| State Reference | FL |
| Altitude | msl single value : 9000 |
| Environment | |
| Weather Elements | Windshear Thunderstorm Rain |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 742711 |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : weather non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Descending to 9000 ft; we had a change of runway 3 times and a thunderstorm rapidly approaching the field. The first officer called out 9000 ft; but in the confusion of looking at the radar and setting up for our 3RD runway change; I hit level change twice and felt nothing; so I pulled vertical speed and felt the airplane descending. He called altitude. The problem was that we were already at 9000 ft. I disconnected the autoplt and climbed back up to 9000 ft. Shortly thereafter; ATC cleared us to 8000 ft. Lots of WX on the approach and windshear. Landed normally; no further problems.
Original NASA ASRS Text
Title: AN A300-600 FLT CREW ON APPROACH TO MIA DESCENDED BELOW CLEARED ALT; AT LEAST IN PART BECAUSE OF DISTRACTIONS OF 3 RWY CHANGES AND SIGNIFICANT WX ON THE APPROACH PATH.
Narrative: DESCENDING TO 9000 FT; WE HAD A CHANGE OF RWY 3 TIMES AND A TSTM RAPIDLY APCHING THE FIELD. THE FO CALLED OUT 9000 FT; BUT IN THE CONFUSION OF LOOKING AT THE RADAR AND SETTING UP FOR OUR 3RD RWY CHANGE; I HIT LEVEL CHANGE TWICE AND FELT NOTHING; SO I PULLED VERT SPD AND FELT THE AIRPLANE DESCENDING. HE CALLED ALT. THE PROB WAS THAT WE WERE ALREADY AT 9000 FT. I DISCONNECTED THE AUTOPLT AND CLBED BACK UP TO 9000 FT. SHORTLY THEREAFTER; ATC CLRED US TO 8000 FT. LOTS OF WX ON THE APCH AND WINDSHEAR. LANDED NORMALLY; NO FURTHER PROBS.
Data retrieved from NASA's ASRS site as of January 2009 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.