B727 crew had altitude deviation in atl class east airspace.

Attributes
ACN	480512
Time
Date	200007
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : atl.vortac
State Reference	GA
Altitude	msl bound lower : 14000 msl bound upper : 14400
Environment
Flight Conditions	Mixed
Weather Elements	Thunderstorm
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon tower : acy.tower
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : commercial pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 210 flight time total : 11220 flight time type : 2800
ASRS Report	480512
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 130 flight time total : 7700 flight time type : 270
ASRS Report	480510
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter other non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

While maneuvering to avoid thunderstorms, altitude deviated +400 ft. No conflict encountered. No TCASII alert, no radio transmission from ATC. Immediately corrected to 14000 ft.

Original NASA ASRS Text

Title: B727 CREW HAD ALTDEV IN ATL CLASS E AIRSPACE.

Narrative: WHILE MANEUVERING TO AVOID TSTMS, ALT DEVIATED +400 FT. NO CONFLICT ENCOUNTERED. NO TCASII ALERT, NO RADIO XMISSION FROM ATC. IMMEDIATELY CORRECTED TO 14000 FT.

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.