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Sct controller issues descent clearance to BE400 in area of varied terrain. BE400 experiences GPWS alarm and takes evasive action.
| Attributes | |
| ACN | 695314 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sdm.airport |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : vacating altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 1200 flight time type : 100 |
| ASRS Report | 695314 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | other spatial deviation |
| Independent Detector | aircraft equipment : gpws |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Descending from higher altitude; we were on vectors for dsm. Location was ene of the field. We were given clearance to descend in area of rising terrain. We had partial contacts of the ground; but we were flying in and out of clouds. Controller gave us descent down to 4000 ft with heading 340 degrees; turning to 310 degrees. Egpws caution was activated; and when we were about 4400 ft; egpws warning mode; resolution mode was activated and we reacted. When we were taking evasive action; controller came back and said our altitude was 6000 ft. I repeated every transmission and controller did not make any warning when we made our descent. Then few mins later; when we were on climb to 6000 ft again; controller came on and said 5000 ft. We were misctled at very dangerous area. I repeated and confirmed the xmissions and both of us agreed on it.
Original NASA ASRS Text
Title: SCT CTLR ISSUES DSCNT CLRNC TO BE400 IN AREA OF VARIED TERRAIN. BE400 EXPERIENCES GPWS ALARM AND TAKES EVASIVE ACTION.
Narrative: DSNDING FROM HIGHER ALT; WE WERE ON VECTORS FOR DSM. LOCATION WAS ENE OF THE FIELD. WE WERE GIVEN CLRNC TO DSND IN AREA OF RISING TERRAIN. WE HAD PARTIAL CONTACTS OF THE GROUND; BUT WE WERE FLYING IN AND OUT OF CLOUDS. CTLR GAVE US DSCNT DOWN TO 4000 FT WITH HDG 340 DEGS; TURNING TO 310 DEGS. EGPWS CAUTION WAS ACTIVATED; AND WHEN WE WERE ABOUT 4400 FT; EGPWS WARNING MODE; RESOLUTION MODE WAS ACTIVATED AND WE REACTED. WHEN WE WERE TAKING EVASIVE ACTION; CTLR CAME BACK AND SAID OUR ALT WAS 6000 FT. I REPEATED EVERY XMISSION AND CTLR DID NOT MAKE ANY WARNING WHEN WE MADE OUR DSCNT. THEN FEW MINS LATER; WHEN WE WERE ON CLB TO 6000 FT AGAIN; CTLR CAME ON AND SAID 5000 FT. WE WERE MISCTLED AT VERY DANGEROUS AREA. I REPEATED AND CONFIRMED THE XMISSIONS AND BOTH OF US AGREED ON IT.
Data retrieved from NASA's ASRS site as of January 2009 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.