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During a flight, an small transport deviates from assigned altitude of 7000 ft to 6300 ft. Pilot discovers error after ATC intervened and climbs back to 7000 ft, all in rfd, il, TRACON airspace.
| Attributes | |
| ACN | 379010 |
| Time | |
| Date | 199708 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : rfd |
| State Reference | IL |
| Altitude | msl bound lower : 6300 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : rfd |
| Operator | common carrier : air taxi |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 4800 flight time type : 1500 |
| ASRS Report | 379010 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On an IFR flight from eok-mek, I was working on a VOR problem and did not notice the altitude hold turn off and lost 700 ft from 7000 ft to 6300 ft before a call from approach called my attention to it. I then climbed back to 7000 ft and locked in the altitude hold.
Original NASA ASRS Text
Title: DURING A FLT, AN SMT DEVIATES FROM ASSIGNED ALT OF 7000 FT TO 6300 FT. PLT DISCOVERS ERROR AFTER ATC INTERVENED AND CLBS BACK TO 7000 FT, ALL IN RFD, IL, TRACON AIRSPACE.
Narrative: ON AN IFR FLT FROM EOK-MEK, I WAS WORKING ON A VOR PROB AND DID NOT NOTICE THE ALT HOLD TURN OFF AND LOST 700 FT FROM 7000 FT TO 6300 FT BEFORE A CALL FROM APCH CALLED MY ATTN TO IT. I THEN CLBED BACK TO 7000 FT AND LOCKED IN THE ALT HOLD.
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.