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Small transport first officer reported an altitude deviation occurred on the RNAV Z approach to runway 9 at tex.
| Attributes | |
| ACN | 1612557 |
| Time | |
| Date | 201901 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | TEX.Airport |
| State Reference | CO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Small Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial |
| Experience | Flight Crew Last 90 Days 34 Flight Crew Total 1235 Flight Crew Type 19 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
While on the RNAV Z runway 9 at tex; we descended from 13000 ft. And leveled off at 12900 ft. Shortly after this I noticed we began descending again. Confused by this I double checked our position and the approach plate and realized we were descending prior to the final approach fix. I voiced my concerns to the PIC that we should still be at 12900 ft; the PIC immediately agreed and began a climb back to 12900 ft. The correction was made between 12200 ft. And 11900 ft.
Original NASA ASRS Text
Title: Small Transport First Officer reported an altitude deviation occurred on the RNAV Z Approach to Runway 9 at TEX.
Narrative: While on the RNAV Z RWY 9 at TEX; we descended from 13000 ft. and leveled off at 12900 ft. Shortly after this I noticed we began descending again. Confused by this I double checked our position and the approach plate and realized we were descending prior to the final approach fix. I voiced my concerns to the PIC that we should still be at 12900 ft; the PIC immediately agreed and began a climb back to 12900 ft. The correction was made between 12200 ft. and 11900 ft.
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.