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Erj-190 flight crew reported receiving a low altitude alert while on a visual approach and descending below the glideslope.
| Attributes | |
| ACN | 1589848 |
| Time | |
| Date | 201810 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | BOS.Airport |
| State Reference | MA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 190/195 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 14000 |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Total 11000 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
Cleared for the visual approach; within 10 DME ilip I descended from our last assigned altitude (2000 ft) to glide slope intercept altitude at nimoy (1500 feet). A couple of miles from FAF; ATC sent an altitude alert which we acknowledged. We had towers to the east of the course inbound in sight as weather was cavu (ceiling and visibility unlimited) and we had the terrain feature on. After being cleared for the visual approach from a vector; I judged prudent to be established at glideslope intercept altitude and configured as we were within 10 NM from the airport and prevailing weather conditions were VFR.I would intercept the course inbound of the published instrument approach and adhere to the published flight path provided by the electronic glideslope to prevent an altitude/ terrain alert by ATC. As a rule of thumb; keeping a 3:1 glide path would have also prevented the altitude alert call by ATC.
Original NASA ASRS Text
Title: ERJ-190 flight crew reported receiving a low altitude alert while on a visual approach and descending below the glideslope.
Narrative: Cleared for the visual approach; within 10 DME ILIP I descended from our last assigned altitude (2000 ft) to glide slope intercept altitude at NIMOY (1500 feet). A couple of miles from FAF; ATC sent an altitude alert which we acknowledged. We had towers to the east of the course inbound in sight as weather was CAVU (Ceiling and Visibility Unlimited) and we had the terrain feature on. After being cleared for the visual approach from a vector; I judged prudent to be established at glideslope intercept altitude and configured as we were within 10 NM from the airport and prevailing weather conditions were VFR.I would intercept the course inbound of the published instrument approach and adhere to the published flight path provided by the electronic glideslope to prevent an altitude/ terrain alert by ATC. As a rule of thumb; keeping a 3:1 glide path would have also prevented the altitude alert call by ATC.
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.