Commuter aircraft has GPWS activate twice.

Attributes
ACN	221986
Time
Date	199209
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : roa
State Reference	VA
Altitude	msl bound lower : 5000 msl bound upper : 5800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Transport
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute airway : zdc
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 : 200 flight time total : 4400 flight time type : 200
ASRS Report	221986
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

In cruise at 5000 ft from lyh to roa GPWS gave a loud warning to climb due to terrain. Initially we climbed to 5800 ft then descended to 5000 ft, then again climbed to 5800 ft a few mi later due to a second GPWS warning. ATC was advised throughout the warning. ATC stated that they were aware that GPWS is tripped on this segment for aircraft with GPWS and said that we caused no problem. If ATC is aware that aircraft with GPWS exist why do they issue rtes that usually trip this warning.

Original NASA ASRS Text

Title: COMMUTER ACFT HAS GPWS ACTIVATE TWICE.

Narrative: IN CRUISE AT 5000 FT FROM LYH TO ROA GPWS GAVE A LOUD WARNING TO CLB DUE TO TERRAIN. INITIALLY WE CLBED TO 5800 FT THEN DSNDED TO 5000 FT, THEN AGAIN CLBED TO 5800 FT A FEW MI LATER DUE TO A SECOND GPWS WARNING. ATC WAS ADVISED THROUGHOUT THE WARNING. ATC STATED THAT THEY WERE AWARE THAT GPWS IS TRIPPED ON THIS SEGMENT FOR ACFT WITH GPWS AND SAID THAT WE CAUSED NO PROBLEM. IF ATC IS AWARE THAT ACFT WITH GPWS EXIST WHY DO THEY ISSUE RTES THAT USUALLY TRIP THIS WARNING.

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.