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Flight crew of an EMB120 climbs to acknowledged 12000 ft. Controller comes back later and says they were only cleared top 11000 ft.
| Attributes | |
| ACN | 400740 |
| Time | |
| Date | 199804 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mfd |
| State Reference | OH |
| Altitude | msl bound lower : 11000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Xingu EMB-121 All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 2800 flight time type : 1300 |
| ASRS Report | 400740 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 2300 flight time type : 800 |
| ASRS Report | 401501 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Climbing out on the way to ind, ZOB cleared us to 12000 ft. First officer's leg. I read back 'climb and maintain one-two thousand.' I set 12000 ft in the altitude alerter. As we leveled off at 12000 ft, center called and said we were only cleared to 11000 ft. We immediately descended to 11000 ft and I told center I read back 12000 ft. He said 'no problem.' if I had read back 'one-two, twelve thousand,' it might have helped.
Original NASA ASRS Text
Title: FLC OF AN EMB120 CLBS TO ACKNOWLEDGED 12000 FT. CTLR COMES BACK LATER AND SAYS THEY WERE ONLY CLRED TOP 11000 FT.
Narrative: CLBING OUT ON THE WAY TO IND, ZOB CLRED US TO 12000 FT. FO'S LEG. I READ BACK 'CLB AND MAINTAIN ONE-TWO THOUSAND.' I SET 12000 FT IN THE ALT ALERTER. AS WE LEVELED OFF AT 12000 FT, CTR CALLED AND SAID WE WERE ONLY CLRED TO 11000 FT. WE IMMEDIATELY DSNDED TO 11000 FT AND I TOLD CTR I READ BACK 12000 FT. HE SAID 'NO PROB.' IF I HAD READ BACK 'ONE-TWO, TWELVE THOUSAND,' IT MIGHT HAVE HELPED.
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.