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The flight crew of an airbus A319 reported that during approach they got a GPWS terrain call while they were one dot fly up on the glideslope.
| Attributes | |
| ACN | 1412004 |
| Time | |
| Date | 201612 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 180 Flight Crew Total 5138.2 Flight Crew Type 5138.2 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Events | |
| Anomaly | Deviation - Procedural Published Material / Policy Inflight Event / Encounter Unstabilized Approach Inflight Event / Encounter CFTT / CFIT |
Narrative:
We were cleared for a vis approach; 4300 feet MSL; 2.0 miles south of localizer; 3 miles west ZZZ ADF. I intercepted the localizer and had 3400 set in the alt window (the min. Alt. Crossing ZZZ ADF) and descended to 3400 ft MSL. 1.5 miles prior to ZZZ ADF we had autopilot and autothrottles on and alt cap 3400 ft.; 1 dot fly up on the glideslope at 170 kts. At this point we got (1) ground proximity warning system (GPWS) terrain call. I disconnect the autopilot and autothrottles and climbed to 3600 feet and intercepted the glideslope. We flew a stabilized app. And landed normally. The runway was in sight the entire time. In retrospect had I added 165ft to my ZZZ ADF crossing from the cold temp. (-16 F.) altitude corrections chart I would not have triggered the GPWS mode 2a warning due to flaps not in land configuration; aircraft not on glideslope. More important however is the fact that I confused the response to terrain terrain with caution terrain which allows me to correct the situation as opposed to executing the escape maneuver. I won't make that mistake again.
Original NASA ASRS Text
Title: The flight crew of an airbus A319 reported that during approach they got a GPWS terrain call while they were one dot fly up on the glideslope.
Narrative: We were cleared for a vis approach; 4300 feet MSL; 2.0 miles south of LOC; 3 miles west ZZZ ADF. I intercepted the localizer and had 3400 set in the alt window (the min. alt. crossing ZZZ ADF) and descended to 3400 ft MSL. 1.5 miles prior to ZZZ ADF we had Autopilot and Autothrottles on and alt cap 3400 ft.; 1 dot fly up on the Glideslope at 170 kts. At this point we got (1) Ground Proximity Warning System (GPWS) terrain call. I disconnect the Autopilot and Autothrottles and climbed to 3600 feet and intercepted the Glideslope. We flew a stabilized app. and landed normally. The runway was in sight the entire time. In retrospect had I added 165ft to my ZZZ ADF crossing from the cold temp. (-16 F.) altitude corrections chart I would not have triggered the GPWS mode 2a warning due to flaps not in land configuration; Aircraft not on Glideslope. More important however is the fact that I confused the response to terrain terrain with caution terrain which allows me to correct the situation as opposed to executing the escape maneuver. I won't make that mistake again.
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.