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Altitude is questioned by ATC as the assigned altitude is exceeded during climb. The crew claims to have been assigned a higher altitude.
| Attributes | |
| ACN | 522280 |
| Time | |
| Date | 200108 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : fuz.vortac |
| State Reference | TX |
| Altitude | msl bound lower : 21000 msl bound upper : 21800 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : s46.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 250 flight time total : 28500 flight time type : 2200 |
| ASRS Report | 522280 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : published procedure |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Climbing out of dfw for xna, center controller asked for altitude. Replied 'leaving 21800 ft for FL230.' was told that assigned altitude was FL210, but maintain FL230. Altitude alerter was set at FL230. I believe assigned altitude was FL230. We were deviating around thunderstorms at the time and it is possible that the clearance was misheard, misread, or misset. There did not appear to be any conflict with other traffic.
Original NASA ASRS Text
Title: ALT IS QUESTIONED BY ATC AS THE ASSIGNED ALT IS EXCEEDED DURING CLB. THE CREW CLAIMS TO HAVE BEEN ASSIGNED A HIGHER ALT.
Narrative: CLBING OUT OF DFW FOR XNA, CTR CTLR ASKED FOR ALT. REPLIED 'LEAVING 21800 FT FOR FL230.' WAS TOLD THAT ASSIGNED ALT WAS FL210, BUT MAINTAIN FL230. ALT ALERTER WAS SET AT FL230. I BELIEVE ASSIGNED ALT WAS FL230. WE WERE DEVIATING AROUND TSTMS AT THE TIME AND IT IS POSSIBLE THAT THE CLRNC WAS MISHEARD, MISREAD, OR MISSET. THERE DID NOT APPEAR TO BE ANY CONFLICT WITH OTHER TFC.
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.