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ZLA ARTCC reported misreading minimum IFR altitude chart; contributing to an aircraft flying below the minimum IFR altitude.
| Attributes | |
| ACN | 1507523 |
| Time | |
| Date | 201712 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZLA.ARTCC |
| State Reference | CA |
| Aircraft 1 | |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 3 |
| Events | |
| Anomaly | ATC Issue All Types Airspace Violation All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
A cessna 182 was proceeding direct to drk at 9000. At the time; I believed the highest upcoming minimum IFR altitude (mia) to be 9000 feet. I likely believed this because I misread the mia chart that showed it to be 9900 feet. As the aircraft approached the area with the 9900 mia; albuquerque center called me asking if the aircraft could accept higher. At this point; I saw my mistake and immediately climbed the aircraft to 10000 feet. However; the aircraft was too close the area with the 9900 mia; and entered it while still climbing to 10000 feet. The aircraft spent a few radar hits in the area before reaching 10000 feet.I should have payed closer attention to the mia chart to verify what altitude would be required. Upon entering the area; I should have issued a terrain alert to the pilot.
Original NASA ASRS Text
Title: ZLA ARTCC reported misreading Minimum IFR Altitude chart; contributing to an aircraft flying below the Minimum IFR Altitude.
Narrative: A Cessna 182 was proceeding direct to DRK at 9000. At the time; I believed the highest upcoming Minimum IFR Altitude (MIA) to be 9000 feet. I likely believed this because I misread the MIA chart that showed it to be 9900 feet. As the aircraft approached the area with the 9900 MIA; Albuquerque center called me asking if the aircraft could accept higher. At this point; I saw my mistake and immediately climbed the aircraft to 10000 feet. However; the aircraft was too close the area with the 9900 MIA; and entered it while still climbing to 10000 feet. The aircraft spent a few radar hits in the area before reaching 10000 feet.I should have payed closer attention to the MIA chart to verify what altitude would be required. Upon entering the area; I should have issued a terrain alert to the pilot.
Data retrieved from NASA's ASRS site 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.