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Flight crew of a B737-200 overshot descent cruise altitude change due to a misunderstanding of the assigned altitude. ARTCC controller did not correct assigned altitude after the captain read back the wrong altitude.
| Attributes | |
| ACN | 467970 |
| Time | |
| Date | 200004 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : irk.vortac |
| State Reference | MO |
| Altitude | msl bound lower : 21000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc tower : lgb.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 240 flight time total : 8500 flight time type : 240 |
| ASRS Report | 467970 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued alert none taken : anomaly accepted none taken : detected after the fact other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Cruising at FL330, ZKC told us to descend to (what we heard) was FL210. In fact, he claims he told us FL310 whereas I read back FL210 and was not corrected. There was no conflict or traffic in the area.
Original NASA ASRS Text
Title: FLC OF A B737-200 OVERSHOT DSCNT CRUISE ALT CHANGE DUE TO A MISUNDERSTANDING OF THE ASSIGNED ALT. ARTCC CTLR DID NOT CORRECT ASSIGNED ALT AFTER THE CAPT READ BACK THE WRONG ALT.
Narrative: CRUISING AT FL330, ZKC TOLD US TO DSND TO (WHAT WE HEARD) WAS FL210. IN FACT, HE CLAIMS HE TOLD US FL310 WHEREAS I READ BACK FL210 AND WAS NOT CORRECTED. THERE WAS NO CONFLICT OR TFC IN THE AREA.
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.