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A B747-400 descended to 600 ft on approach to jfk 13L. Tower called low altitude alert and crew climbed to 800 ft. Barometric pressure was changing rapidly.
| Attributes | |
| ACN | 741995 |
| Time | |
| Date | 200706 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : jfk.airport |
| State Reference | NY |
| Altitude | msl bound lower : 600 msl bound upper : 800 |
| Environment | |
| Weather Elements | Thunderstorm Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 24000 flight time type : 6400 |
| ASRS Report | 741995 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
On the canarsie approach for runway 13L descended to 600 ft approximately when called by tower of altitude check. The altimeter was falling rapidly and climbed to 800 ft and no further event. Landed and taxied the aircraft to the gate.
Original NASA ASRS Text
Title: A B747-400 DESCENDED TO 600 FT ON APCH TO JFK 13L. TOWER CALLED LOW ALT ALERT AND CREW CLBED TO 800 FT. BAROMETRIC PRESSURE WAS CHANGING RAPIDLY.
Narrative: ON THE CANARSIE APCH FOR RWY 13L DSNDED TO 600 FT APPROX WHEN CALLED BY TWR OF ALT CHK. THE ALTIMETER WAS FALLING RAPIDLY AND CLBED TO 800 FT AND NO FURTHER EVENT. LANDED AND TAXIED THE ACFT TO THE GATE.
Data retrieved from NASA's ASRS site as of January 2009 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.