 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Crj-900 flight crew reported receiving a low altitude alert from ATC on approach to azo when they descended below charted altitude.
| Attributes | |
| ACN | 1319446 |
| Time | |
| Date | 201512 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | AZO.Airport |
| State Reference | MI |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet 900 (CRJ900) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Other RNAV Runway 17 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
Enroute to azo; I had briefed the 35 ILS approach. When we were close to azo; the wind speed and direction made 35 unusable. We asked for vectors to set up for the RNAV 17 approach. I briefed the approach and we took vectors to the approach. During the approach; azo tower advised us of a low altitude alert. I had inadvertently started down to minimums just prior to wurax. I started back up; but we were crossing wurax so I continued down to my MDA of 1200 feet MSL and continued to a normal landing. While discussing the approach at the gate; I realized I had descended to the LNAV/VNAV minimums 1200 feet. I should have stopped at the LNAV minimums of 1400 feet.after reviewing the approach plate; I realized that this approach plate had minimums for 3 different approaches. Lpv; LNAV/VNAV; and LNAV. I had looked at the second box where LNAV minimums are on many charts. In the future I will be aware of the fact that there could be a lpv approach listed. In the future I will pay closer attention to the advisory VNAV.
Original NASA ASRS Text
Title: CRJ-900 flight crew reported receiving a low altitude alert from ATC on approach to AZO when they descended below charted altitude.
Narrative: Enroute to AZO; I had briefed the 35 ILS approach. When we were close to AZO; the wind speed and direction made 35 unusable. We asked for vectors to set up for the RNAV 17 approach. I briefed the approach and we took vectors to the approach. During the approach; AZO tower advised us of a low altitude alert. I had inadvertently started down to minimums just prior to WURAX. I started back up; but we were crossing WURAX so I continued down to my MDA of 1200 feet MSL and continued to a normal landing. While discussing the approach at the gate; I realized I had descended to the LNAV/VNAV minimums 1200 feet. I should have stopped at the LNAV minimums of 1400 feet.After reviewing the Approach Plate; I realized that this approach plate had minimums for 3 different approaches. LPV; LNAV/VNAV; and LNAV. I had looked at the second box where LNAV minimums are on many charts. In the future I will be aware of the fact that there could be a LPV approach listed. In the future I will pay closer attention to the advisory VNAV.
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.