GPWS activation creates an altitude deviation reversal in descent due to evasive action climb.

Attributes
ACN	204676
Time
Date	199203
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : geg
State Reference	WA
Altitude	msl bound lower : 6300 msl bound upper : 6800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : geg tower : agc
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 250 flight time total : 10500 flight time type : 250
ASRS Report	204676
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : undershoot other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : exited adverse environment flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

GPWS activated during descent through 6300 ft MSL to 6000 ft assigned. Climb was initiated and ATC advised of situation. Leveled at 6900 ft MSL and coordinated return to 6000 ft with ATC. GPWS ceased warning at 6800 ft MSL. Called ATC after arrival via phone and discussed situation. Was told that this occurrence was common and they were gathering information to help identify the cause.

Original NASA ASRS Text

Title: GPWS ACTIVATION CREATES AN ALTDEV REVERSAL IN DSCNT DUE TO EVASIVE ACTION CLB.

Narrative: GPWS ACTIVATED DURING DSCNT THROUGH 6300 FT MSL TO 6000 FT ASSIGNED. CLB WAS INITIATED AND ATC ADVISED OF SITUATION. LEVELED AT 6900 FT MSL AND COORDINATED RETURN TO 6000 FT WITH ATC. GPWS CEASED WARNING AT 6800 FT MSL. CALLED ATC AFTER ARR VIA PHONE AND DISCUSSED SITUATION. WAS TOLD THAT THIS OCCURRENCE WAS COMMON AND THEY WERE GATHERING INFO TO HELP IDENT THE CAUSE.

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.