<< >> NASA ASRS Report 729426, February 2007

An air carrier on the fsd 050 degree radial 7 DME received a terrain warning at 4500 ft. The escape maneuver was completed.

Attributes
ACN	729426
Time
Date	200702
Local Time Of Day	0001 To 0600
Place
Locale Reference	navaid : fsd.vortac
Altitude	msl single value : 4500
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zmp.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer only : 21
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 4600 flight time type : 400
ASRS Report	7299426
Events
Anomaly	aircraft equipment problem : less severe other anomaly other non adherence : published procedure
Independent Detector	aircraft equipment : gpws other flight crewa
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

ZMP was providing vectors to join the final approach course to the ILS runway 21 at fsd. We received a vector that did not allow us to join; so we asked to be vectored back around. As we were on a northeasterly heading at 4500 ft MSL and the fsd 050 degree radial at 7 DME. We received a 'terrain;' 'pull up' alert from our GPWS and we climbed to 5500 ft MSL. ZMP was advised of the altitude deviation. After we landed we reviewed our commercial approach plates which showed an MSA of 3300 ft MSL for the sector we were located.

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Original NASA ASRS Text

Title: AN ACR ON THE FSD 050 DEG RADIAL 7 DME RECEIVED A TERRAIN WARNING AT 4500 FT. THE ESCAPE MANEUVER WAS COMPLETED.

Narrative: ZMP WAS PROVIDING VECTORS TO JOIN THE FINAL APCH COURSE TO THE ILS RWY 21 AT FSD. WE RECEIVED A VECTOR THAT DID NOT ALLOW US TO JOIN; SO WE ASKED TO BE VECTORED BACK AROUND. AS WE WERE ON A NORTHEASTERLY HDG AT 4500 FT MSL AND THE FSD 050 DEG RADIAL AT 7 DME. WE RECEIVED A 'TERRAIN;' 'PULL UP' ALERT FROM OUR GPWS AND WE CLBED TO 5500 FT MSL. ZMP WAS ADVISED OF THE ALTDEV. AFTER WE LANDED WE REVIEWED OUR COMMERCIAL APCH PLATES WHICH SHOWED AN MSA OF 3300 FT MSL FOR THE SECTOR WE WERE LOCATED.

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.