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Altitude deviation altitude overshot -- air carrier descends below its assigned altitude due to miscom.
| Attributes | |
| ACN | 310360 |
| Time | |
| Date | 199507 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mem |
| State Reference | TN |
| Altitude | msl bound lower : 32000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 7500 flight time type : 300 |
| ASRS Report | 310360 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 215 flight time total : 13880 flight time type : 260 |
| ASRS Report | 310504 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Descent clearance was given and read back 'out of FL370 for FL230.' frequency changed new frequency check-in was 'out of FL330 for FL230.' passing FL320, controller asked what our cleared altitude was and we replied 'cleared to FL230.' he informed us that initial clearance was FL330 -- descend and maintain FL290. We acknowledged FL290 and apologized for the miscom. Controller said no problem. Captain missed initial clearance due to being off frequency for the mem ATIS.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT -- ACR DSNDS BELOW ITS ASSIGNED ALT DUE TO MISCOM.
Narrative: DSCNT CLRNC WAS GIVEN AND READ BACK 'OUT OF FL370 FOR FL230.' FREQ CHANGED NEW FREQ CHK-IN WAS 'OUT OF FL330 FOR FL230.' PASSING FL320, CTLR ASKED WHAT OUR CLRED ALT WAS AND WE REPLIED 'CLRED TO FL230.' HE INFORMED US THAT INITIAL CLRNC WAS FL330 -- DSND AND MAINTAIN FL290. WE ACKNOWLEDGED FL290 AND APOLOGIZED FOR THE MISCOM. CTLR SAID NO PROB. CAPT MISSED INITIAL CLRNC DUE TO BEING OFF FREQ FOR THE MEM ATIS.
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.