An air carrier medium large transport climbed in response to a GPWS warning.

Attributes
ACN	283740
Time
Date	199409
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : clt
State Reference	NC
Altitude	msl bound lower : 3600 msl bound upper : 4600
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : clt
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 138 flight time total : 14000 flight time type : 4000
ASRS Report	283740
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 160 flight time total : 16500 flight time type : 6500
ASRS Report	283744
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared ILS runway 18L, clt, 3600 ft MSL. Lost identify on both ILS's and had warning flags both sides. Approach said 'turn left 090 degree heading.' entered heavy rain, requested 010 degree heading for WX avoidance. Denied due to traffic. While IMC, moderate turbulence, heavy rain, GPWS activated with, 'terrain, terrain, pull up' added maximum power and climbed. Advised approach of climb due to GPWS warning. ATC reclred us to 4600 ft MSL. Controller asked again about what type of warning we got. He did not seem familiar with abbreviation 'GPWS' so we advised him we got a 'terrain, pull up' warning. No traffic conflict. We honored GPWS warning and climbed due to IMC conditions. Wrote up GPWS in maintenance log book upon arrival.

Original NASA ASRS Text

Title: AN ACR MLG CLBED IN RESPONSE TO A GPWS WARNING.

Narrative: CLRED ILS RWY 18L, CLT, 3600 FT MSL. LOST IDENT ON BOTH ILS'S AND HAD WARNING FLAGS BOTH SIDES. APCH SAID 'TURN L 090 DEG HDG.' ENTERED HVY RAIN, REQUESTED 010 DEG HDG FOR WX AVOIDANCE. DENIED DUE TO TFC. WHILE IMC, MODERATE TURB, HVY RAIN, GPWS ACTIVATED WITH, 'TERRAIN, TERRAIN, PULL UP' ADDED MAX PWR AND CLBED. ADVISED APCH OF CLB DUE TO GPWS WARNING. ATC RECLRED US TO 4600 FT MSL. CTLR ASKED AGAIN ABOUT WHAT TYPE OF WARNING WE GOT. HE DID NOT SEEM FAMILIAR WITH ABBREVIATION 'GPWS' SO WE ADVISED HIM WE GOT A 'TERRAIN, PULL UP' WARNING. NO TFC CONFLICT. WE HONORED GPWS WARNING AND CLBED DUE TO IMC CONDITIONS. WROTE UP GPWS IN MAINT LOG BOOK UPON ARR.

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.