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Altitude deviation altitude overshot -- air carrier descends below assigned altitude. Approach controller corrects.
| Attributes | |
| ACN | 316400 |
| Time | |
| Date | 199509 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : smo airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 2000 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 15000 flight time type : 11000 |
| ASRS Report | 316400 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4900 |
| ASRS Report | 316401 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent sadde arrival to lax. Approach gave clearance to cross smo VOR at or above 7000 ft to maintain 2500 ft. First officer read back 2000 ft and selected that in the window. I also read back 2000 ft, I think as influenced by the first officer readback. On base, lax approach said he needed us at 2500 ft (we had descended to 2000 ft). It was then that I recalled being cleared to 2500 ft not 2000 ft. We climbed to 2500 ft and continued the ILS to runway 24R. No conflict involved.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT -- ACR DSNDS BELOW ASSIGNED ALT. APCH CTLR CORRECTS.
Narrative: ON DSCNT SADDE ARR TO LAX. APCH GAVE CLRNC TO CROSS SMO VOR AT OR ABOVE 7000 FT TO MAINTAIN 2500 FT. FO READ BACK 2000 FT AND SELECTED THAT IN THE WINDOW. I ALSO READ BACK 2000 FT, I THINK AS INFLUENCED BY THE FO READBACK. ON BASE, LAX APCH SAID HE NEEDED US AT 2500 FT (WE HAD DSNDED TO 2000 FT). IT WAS THEN THAT I RECALLED BEING CLRED TO 2500 FT NOT 2000 FT. WE CLBED TO 2500 FT AND CONTINUED THE ILS TO RWY 24R. NO CONFLICT INVOLVED.
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.