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A B737-300 flight crew accepts and acknowledged a clearance from 12000 ft to 10000 ft. Controller later says it was to '11000 ft.' D10, tx.
| Attributes | |
| ACN | 471740 |
| Time | |
| Date | 200005 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | TX |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : bowie |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 19000 flight time type : 250 |
| ASRS Report | 471740 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : published procedure non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Airlines flight may/xa/00 from abq-dal on the bowie 5 arrival. Approach control gave a descent from 12000 ft to 10000 ft. I read back the clearance and set 10000 ft in the autoplt MCP altitude window and the first officer descended to 10000 ft. 30 seconds later, approach control said our clearance was to 11000 ft. I replied that our clearance was to 10000 ft and that was what I acknowledged. The first officer climbed to 11000 ft and I noted there were no aircraft on the TCASII scope that presented a conflict with our flight path or altitude. The controller did not contest my statement concerning the descent clearance or ask me to call the approach control facility after landing.
Original NASA ASRS Text
Title: A B737-300 FLC ACCEPTS AND ACKNOWLEDGED A CLRNC FROM 12000 FT TO 10000 FT. CTLR LATER SAYS IT WAS TO '11000 FT.' D10, TX.
Narrative: AIRLINES FLT MAY/XA/00 FROM ABQ-DAL ON THE BOWIE 5 ARR. APCH CTL GAVE A DSCNT FROM 12000 FT TO 10000 FT. I READ BACK THE CLRNC AND SET 10000 FT IN THE AUTOPLT MCP ALT WINDOW AND THE FO DSNDED TO 10000 FT. 30 SECONDS LATER, APCH CTL SAID OUR CLRNC WAS TO 11000 FT. I REPLIED THAT OUR CLRNC WAS TO 10000 FT AND THAT WAS WHAT I ACKNOWLEDGED. THE FO CLBED TO 11000 FT AND I NOTED THERE WERE NO ACFT ON THE TCASII SCOPE THAT PRESENTED A CONFLICT WITH OUR FLT PATH OR ALT. THE CTLR DID NOT CONTEST MY STATEMENT CONCERNING THE DSCNT CLRNC OR ASK ME TO CALL THE APCH CTL FACILITY AFTER LNDG.
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.