<< >> NASA ASRS Report 331370, March 1996

The flight was being vectored in IMC conditions at night for a visual approach. When cleared to descend to 4200 ft the descent was started and the GPWS warning 'terrain' occurred. The procedural maximum power pull up was accomplished to 5500 ft before the warning stopped. The controller was advised. The controller told the flight they were now well clear of the terrain and could descend to 3700 ft. There was moderate turbulence.

Attributes
ACN	331370
Time
Date	199603
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : roa
State Reference	VA
Altitude	msl bound lower : 4200 msl bound upper : 5500
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : roa
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 10000 flight time type : 7000
ASRS Report	331370
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	controller : issued new clearance flight crew : exited adverse environment flight crew : took evasive action
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Flight was being vectored for a visual approach runway 24 rda. We were at 5000 ft still IMC. Approach gave us a descent to 4200 ft. We started the descent and got a GPWS warning 'terrain, terrain pull up.' we initiated a maximum power pull up and climbed to 5500 ft before the warning stopped. We advised approach of our evasive action. Approach stated that we were now well clear of any terrain and could descend to 3700 ft. We descended and broke out at about 4000 ft and completed the approach without further problems. There was moderate turbulence as we started the first descent, not sure if that was a factor or not.

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Original NASA ASRS Text

Title: THE FLT WAS BEING VECTORED IN IMC CONDITIONS AT NIGHT FOR A VISUAL APCH. WHEN CLRED TO DSND TO 4200 FT THE DSCNT WAS STARTED AND THE GPWS WARNING 'TERRAIN' OCCURRED. THE PROCEDURAL MAX PWR PULL UP WAS ACCOMPLISHED TO 5500 FT BEFORE THE WARNING STOPPED. THE CTLR WAS ADVISED. THE CTLR TOLD THE FLT THEY WERE NOW WELL CLR OF THE TERRAIN AND COULD DSND TO 3700 FT. THERE WAS MODERATE TURB.

Narrative: FLT WAS BEING VECTORED FOR A VISUAL APCH RWY 24 RDA. WE WERE AT 5000 FT STILL IMC. APCH GAVE US A DSCNT TO 4200 FT. WE STARTED THE DSCNT AND GOT A GPWS WARNING 'TERRAIN, TERRAIN PULL UP.' WE INITIATED A MAX PWR PULL UP AND CLBED TO 5500 FT BEFORE THE WARNING STOPPED. WE ADVISED APCH OF OUR EVASIVE ACTION. APCH STATED THAT WE WERE NOW WELL CLR OF ANY TERRAIN AND COULD DSND TO 3700 FT. WE DSNDED AND BROKE OUT AT ABOUT 4000 FT AND COMPLETED THE APCH WITHOUT FURTHER PROBS. THERE WAS MODERATE TURB AS WE STARTED THE FIRST DSCNT, NOT SURE IF THAT WAS A FACTOR OR NOT.

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.