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An ATR42 PIC report regarding the activation of the GPWS at 2400 ft approaching 4 mi southeast of lse, wi.
| Attributes | |
| ACN | 448189 |
| Time | |
| Date | 199909 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lse.airport |
| State Reference | WA |
| Altitude | msl bound lower : 1000 msl bound upper : 2400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lse.tower |
| Operator | common carrier : air carrier |
| Make Model Name | ATR 42 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : multi engine pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 9000 flight time type : 4000 |
| ASRS Report | 448189 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : undershoot non adherence : published procedure |
| Independent Detector | aircraft equipment : gpws |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Aircraft Weather Flight Crew Human Performance Airport Company |
| Primary Problem | Flight Crew Human Performance |
Narrative:
During departure climb off runway 13, GPWS warning 'terrain, whoop, whoop' sounded from +/-2.7 DME to 3.7 DME (between +/-1800-2400 ft MSL). Radar altimeter descended to +/-600 ft during this period. Lse airport analysis was used including published 400 ft minimum leveloff/acceleration altitude. All aircraft system were operating normally and standard departure profile followed. Aircraft passed over 'bluffs' ese of airport. Aircraft was +/-1400 pounds under allowable takeoff weight. Had this occurred in IMC, or during single engine emergency, there would be cause for concern.
Original NASA ASRS Text
Title: AN ATR42 PIC RPT REGARDING THE ACTIVATION OF THE GPWS AT 2400 FT APCHING 4 MI SE OF LSE, WI.
Narrative: DURING DEP CLB OFF RWY 13, GPWS WARNING 'TERRAIN, WHOOP, WHOOP' SOUNDED FROM +/-2.7 DME TO 3.7 DME (BTWN +/-1800-2400 FT MSL). RADAR ALTIMETER DSNDED TO +/-600 FT DURING THIS PERIOD. LSE ARPT ANALYSIS WAS USED INCLUDING PUBLISHED 400 FT MINIMUM LEVELOFF/ACCELERATION ALT. ALL ACFT SYS WERE OPERATING NORMALLY AND STANDARD DEP PROFILE FOLLOWED. ACFT PASSED OVER 'BLUFFS' ESE OF ARPT. ACFT WAS +/-1400 LBS UNDER ALLOWABLE TKOF WT. HAD THIS OCCURRED IN IMC, OR DURING SINGLE ENG EMER, THERE WOULD BE CAUSE FOR CONCERN.
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.