FK10 crew encountered convective activity.

Attributes
ACN	446289
Time
Date	199908
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : zny.artcc
State Reference	NY
Altitude	msl bound lower : 17000 msl bound upper : 17700
Environment
Flight Conditions	IMC
Weather Elements	Rain Thunderstorm Turbulence
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	446289
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
ASRS Report	446290
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude inflight encounter : turbulence inflight encounter : weather non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Weather
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Altitude deviation. Maneuvering for WX during departure from isp at 17000 ft aircraft encountered a cell with moderate turbulence and moderate to heavy precipitation. Radio altimeter display appeared, a GPWS audio warning sounded and a windshear alert displayed red on the pfd with the associated aural warning. The autoplt disengaged itself. The aircraft climbed about 700 ft during the encounter. New york departure control was notified of the altitude deviation while the aircraft was returned to the previously assigned altitude of 17000 ft. Supplemental information from acn 446290: autoplt on in a left turn to avoid WX and encountered moderate turbulence and heavy rain. Radio altimeter became active with a subsequent GPWS alert 'too low.' autoplt disengaged, then received a windshear alert (red) and the airplane climbed to 17700 ft, recovered back to our assigned altitude and notified ATC.

Original NASA ASRS Text

Title: FK10 CREW ENCOUNTERED CONVECTIVE ACTIVITY.

Narrative: ALTDEV. MANEUVERING FOR WX DURING DEP FROM ISP AT 17000 FT ACFT ENCOUNTERED A CELL WITH MODERATE TURB AND MODERATE TO HVY PRECIP. RADIO ALTIMETER DISPLAY APPEARED, A GPWS AUDIO WARNING SOUNDED AND A WINDSHEAR ALERT DISPLAYED RED ON THE PFD WITH THE ASSOCIATED AURAL WARNING. THE AUTOPLT DISENGAGED ITSELF. THE ACFT CLBED ABOUT 700 FT DURING THE ENCOUNTER. NEW YORK DEP CTL WAS NOTIFIED OF THE ALTDEV WHILE THE ACFT WAS RETURNED TO THE PREVIOUSLY ASSIGNED ALT OF 17000 FT. SUPPLEMENTAL INFO FROM ACN 446290: AUTOPLT ON IN A L TURN TO AVOID WX AND ENCOUNTERED MODERATE TURB AND HVY RAIN. RADIO ALTIMETER BECAME ACTIVE WITH A SUBSEQUENT GPWS ALERT 'TOO LOW.' AUTOPLT DISENGAGED, THEN RECEIVED A WINDSHEAR ALERT (RED) AND THE AIRPLANE CLBED TO 17700 FT, RECOVERED BACK TO OUR ASSIGNED ALT AND NOTIFIED ATC.

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.