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An air carrier medium large transport crew climbed in response to a GPWS warning. They considered this to be a false warning, but in reality it could have been real as they were operating in a designated mountainous area, swf.
| Attributes | |
| ACN | 347780 |
| Time | |
| Date | 199609 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : swf |
| State Reference | NY |
| Altitude | msl bound lower : 4000 msl bound upper : 5500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : swf |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 9000 flight time type : 3000 |
| ASRS Report | 347780 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 140 flight time total : 6750 flight time type : 2900 |
| ASRS Report | 347777 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
| Situations | |
| Airport | other physical facility |
Narrative:
In level flight at 4000 ft MSL, on vectors for visual approach to swf in VMC at night, GPWS terrain warning sounded. Applied full power and started an immediate climb until warning silenced (approximately 1500 ft). After evaluating the situation, it appeared the warning was a false indication. Remainder of approach and landing were uneventful.
Original NASA ASRS Text
Title: AN ACR MLG CREW CLBED IN RESPONSE TO A GPWS WARNING. THEY CONSIDERED THIS TO BE A FALSE WARNING, BUT IN REALITY IT COULD HAVE BEEN REAL AS THEY WERE OPERATING IN A DESIGNATED MOUNTAINOUS AREA, SWF.
Narrative: IN LEVEL FLT AT 4000 FT MSL, ON VECTORS FOR VISUAL APCH TO SWF IN VMC AT NIGHT, GPWS TERRAIN WARNING SOUNDED. APPLIED FULL PWR AND STARTED AN IMMEDIATE CLB UNTIL WARNING SILENCED (APPROX 1500 FT). AFTER EVALUATING THE SIT, IT APPEARED THE WARNING WAS A FALSE INDICATION. REMAINDER OF APCH AND LNDG WERE UNEVENTFUL.
Data retrieved from NASA's ASRS site as of July 2007 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.