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The PIC of a B727-200 descends out of his assigned altitude prematurely, all the while with the altitude alerter sounding, 28 NM west of mia, fl.
| Attributes | |
| ACN | 475830 |
| Time | |
| Date | 200006 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mia.airport |
| State Reference | FL |
| Altitude | msl bound lower : 9700 msl bound upper : 10000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia.tracon tower : atl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 09r |
| Flight Phase | descent : vacating altitude |
| Route In Use | approach : instrument precision arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| ASRS Report | 475838 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : company policies other anomaly other |
| Independent Detector | aircraft equipment : altitude alert other flight crewa |
| Resolutory Action | flight crew : returned to assigned altitude |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Captain was flying. Given heading 130 degrees to intercept localizer runway 9R. Current altitude was 10000 ft. Captain turned to heading of 130 degrees and I was putting in an extended centerline of localizer runway 9R into the FMGS. The altitude alert horn was going off and we were in a slow descent through 9700 ft. The captain had thought we were cleared to 4000 ft. The captain immediately corrected back to 10000 ft. I asked ATC if we had been cleared to 4000 ft and they responded that we were now cleared to 4000 ft and cleared for the approach. However, we were not cleared to 4000 ft earlier.
Original NASA ASRS Text
Title: THE PIC OF A B727-200 DSNDS OUT OF HIS ASSIGNED ALT PREMATURELY, ALL THE WHILE WITH THE ALT ALERTER SOUNDING, 28 NM W OF MIA, FL.
Narrative: CAPT WAS FLYING. GIVEN HDG 130 DEGS TO INTERCEPT LOC RWY 9R. CURRENT ALT WAS 10000 FT. CAPT TURNED TO HDG OF 130 DEGS AND I WAS PUTTING IN AN EXTENDED CTRLINE OF LOC RWY 9R INTO THE FMGS. THE ALT ALERT HORN WAS GOING OFF AND WE WERE IN A SLOW DSCNT THROUGH 9700 FT. THE CAPT HAD THOUGHT WE WERE CLRED TO 4000 FT. THE CAPT IMMEDIATELY CORRECTED BACK TO 10000 FT. I ASKED ATC IF WE HAD BEEN CLRED TO 4000 FT AND THEY RESPONDED THAT WE WERE NOW CLRED TO 4000 FT AND CLRED FOR THE APCH. HOWEVER, WE WERE NOT CLRED TO 4000 FT EARLIER.
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.