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An medium large transport air carrier got low in a visual traffic pattern at mso. The GPWS gave a 'pull up terrain' warning.
| Attributes | |
| ACN | 219503 |
| Time | |
| Date | 199208 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mso |
| State Reference | MT |
| Altitude | msl bound lower : 7500 msl bound upper : 7500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mso |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other other |
| Route In Use | approach : circling approach : visual enroute airway : mto |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 70 flight time total : 8000 flight time type : 180 |
| ASRS Report | 219503 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : ground less severe other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Flight slc-mso aug/fri/92. Terrain closure on visual approach at night. On descent into mso, after breaking off the VOR DME B inside stevi approach at 8100 ft and field in sight, the runway was changed to runway 11 from 29 at the last min. I turned downwind at 290 and started gradual descent to position for landing. 'Whoop whoop pull up' and terrain started off. I immediately applied power and climbed to 9000 ft and proceeded to turn base, still with the field in sight, and landed uneventfully. After review, I was obviously farther away from the field than was thought, at 7-8 mi vice 2-3. We were VFR, but I should have requested the ILS to 11 after the runway change and not start descent before base.
Original NASA ASRS Text
Title: AN MLG ACR GOT LOW IN A VISUAL TFC PATTERN AT MSO. THE GPWS GAVE A 'PULL UP TERRAIN' WARNING.
Narrative: FLT SLC-MSO AUG/FRI/92. TERRAIN CLOSURE ON VISUAL APCH AT NIGHT. ON DSCNT INTO MSO, AFTER BREAKING OFF THE VOR DME B INSIDE STEVI APCH AT 8100 FT AND FIELD IN SIGHT, THE RWY WAS CHANGED TO RWY 11 FROM 29 AT THE LAST MIN. I TURNED DOWNWIND AT 290 AND STARTED GRADUAL DSCNT TO POS FOR LNDG. 'WHOOP WHOOP PULL UP' AND TERRAIN STARTED OFF. I IMMEDIATELY APPLIED PWR AND CLBED TO 9000 FT AND PROCEEDED TO TURN BASE, STILL WITH THE FIELD IN SIGHT, AND LANDED UNEVENTFULLY. AFTER REVIEW, I WAS OBVIOUSLY FARTHER AWAY FROM THE FIELD THAN WAS THOUGHT, AT 7-8 MI VICE 2-3. WE WERE VFR, BUT I SHOULD HAVE REQUESTED THE ILS TO 11 AFTER THE RWY CHANGE AND NOT START DSCNT BEFORE BASE.
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.