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On a night visual approach to runway 11L at tus the flight crew of a B737-700 received caution terrain and 'pull up terrain' egpws warnings roughly 17 NM from the airport. They complied with the terrain avoidance maneuver; tuned the ILS and intercepted the GS from below; then continued to landing.
| Attributes | |
| ACN | 1023155 |
| Time | |
| Date | 201207 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | TUS.TRACON |
| State Reference | AZ |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 204 Flight Crew Type 8800 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 65 |
| Events | |
| Anomaly | Inflight Event / Encounter CFTT / CFIT |
Narrative:
Coming in for a visual approach and landing at tucson to end our duty day. It was night; VFR. Our clearance was to proceed direct to calls and descend to 6;000 ft. As we descended; we got and maintained visual contact with runway 11L. I checked the minimum altitude for calls; which was 5;000 ft and confirmed that altitude with the first officer. While I knew the high terrain was just to the west of centerline; I did not verify the altitude of the terrain; which was 4;600 ft. As we approached the terrain; I continued to crosscheck the terrain display on my instruments. The first officer backed it up as well.soon after we passed through 6;000; we got a 'caution terrain' warning. As I was reaching to take control of the aircraft; the caution changed to a GPWS 'pull up terrain' command. The first officer stated we have to perform a terrain avoidance maneuver as I was switching off the automation. I added power and was approaching a 20 degree deck angle when we passed through 5;700 ft and the terrain warning terminated. I leveled the plane; captured ILS glide path prior to calls; and completed the approach and landing. At no time did we lose sight of the runway.I should have taken the time to review the elevation of that terrain before the approach. Definitely don't descend below 6;000 ft until past that hill.
Original NASA ASRS Text
Title: On a night visual approach to Runway 11L at TUS the flight crew of a B737-700 received Caution Terrain and 'Pull Up Terrain' EGPWS warnings roughly 17 NM from the airport. They complied with the terrain avoidance maneuver; tuned the ILS and intercepted the GS from below; then continued to landing.
Narrative: Coming in for a visual approach and landing at Tucson to end our duty day. It was night; VFR. Our clearance was to proceed direct to CALLS and descend to 6;000 FT. As we descended; we got and maintained visual contact with Runway 11L. I checked the minimum altitude for CALLS; which was 5;000 FT and confirmed that altitude with the First Officer. While I knew the high terrain was just to the west of centerline; I did not verify the altitude of the terrain; which was 4;600 FT. As we approached the terrain; I continued to crosscheck the terrain display on my instruments. The First Officer backed it up as well.Soon after we passed through 6;000; we got a 'Caution Terrain' warning. As I was reaching to take control of the aircraft; the caution changed to a GPWS 'Pull Up Terrain' command. The First Officer stated we have to perform a terrain avoidance maneuver as I was switching off the automation. I added power and was approaching a 20 degree deck angle when we passed through 5;700 FT and the Terrain Warning terminated. I leveled the plane; captured ILS glide path prior to CALLS; and completed the approach and landing. At no time did we lose sight of the runway.I should have taken the time to review the elevation of that terrain before the approach. Definitely don't descend below 6;000 FT until past that hill.
Data retrieved from NASA's ASRS site as of July 2013 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.