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Air carrier flight crew reported receiving a low altitude warning from tower despite cockpit instruments showing that they were above the RNAV glidepath.
| Attributes | |
| ACN | 1756786 |
| Time | |
| Date | 202008 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LGA.Tower |
| State Reference | NY |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | ATC Issue All Types |
Narrative:
On RNAV (area navigation) visual 31 approach at 1000'; lga tower reported a 'low altitude' alert on us even though we were on the correct VNAV (vertical navigation) and LNAV (lateral navigation) profile. I leveled off and both pilots verified we had the correct altimeter setting and were at or above the VNAV profile. I was visual with the runway and showed we were high on the PAPI precision approach path indicator) as well. I corrected our vertical path back to the rnavs and visual flight path and landed in the touchdown zone without further incident. After landing; lga tower confirmed they have been having erroneous 'low altitude alerts' with other flights in the same area. Lga should check their altitude alerting information to insure it is giving accurate data.
Original NASA ASRS Text
Title: Air carrier flight crew reported receiving a low altitude warning from tower despite cockpit instruments showing that they were above the RNAV glidepath.
Narrative: On RNAV (Area Navigation) Visual 31 Approach at 1000'; LGA Tower reported a 'low altitude' alert on us even though we were on the correct VNAV (Vertical Navigation) and LNAV (Lateral Navigation) profile. I leveled off and both Pilots verified we had the correct altimeter setting and were at or above the VNAV profile. I was visual with the runway and showed we were high on the PAPI Precision Approach Path Indicator) as well. I corrected our vertical path back to the RNAVS and visual flight path and landed in the touchdown zone without further incident. After landing; LGA Tower confirmed they have been having erroneous 'low altitude alerts' with other flights in the same area. LGA should check their altitude alerting information to insure it is giving accurate data.
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.