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A charter pilot reported a readback hearback problem with ind TRACON, which caused an altitude deviation.
| Attributes | |
| ACN | 515860 |
| Time | |
| Date | 200106 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ind.tracon |
| State Reference | IN |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : charter |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : charter |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 125 flight time total : 2900 flight time type : 650 |
| ASRS Report | 515860 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : published procedure non adherence : clearance non adherence : far |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
I received clearance to descend to what I believed to be 10000 ft. This was to accommodate my arrival to the indianapolis metropolitan airport (ump). I readback the clearance and set the altitude alerter to 10000 ft. After I was level, the indy approach controller told me to change frequency to grissom approach, but also asked what my clearance altitude was. I told him 10000 ft. He replied, 'it was 11000 ft. I must have missed your readback.' I stated that I had read back 10000 ft. He then cleared me to change frequency. There was nothing stated to me by ATC of this occurrence causing any deviation or negative effects to any other aircraft or ATC operations.
Original NASA ASRS Text
Title: A CHARTER PLT RPTED A READBACK HEARBACK PROB WITH IND TRACON, WHICH CAUSED AN ALT DEV.
Narrative: I RECEIVED CLRNC TO DSND TO WHAT I BELIEVED TO BE 10000 FT. THIS WAS TO ACCOMMODATE MY ARR TO THE INDIANAPOLIS METROPOLITAN ARPT (UMP). I READBACK THE CLRNC AND SET THE ALT ALERTER TO 10000 FT. AFTER I WAS LEVEL, THE INDY APCH CTLR TOLD ME TO CHANGE FREQ TO GRISSOM APCH, BUT ALSO ASKED WHAT MY CLRNC ALT WAS. I TOLD HIM 10000 FT. HE REPLIED, 'IT WAS 11000 FT. I MUST HAVE MISSED YOUR READBACK.' I STATED THAT I HAD READ BACK 10000 FT. HE THEN CLRED ME TO CHANGE FREQ. THERE WAS NOTHING STATED TO ME BY ATC OF THIS OCCURRENCE CAUSING ANY DEV OR NEGATIVE EFFECTS TO ANY OTHER ACFT OR ATC OPS.
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.