An air carrier medium large transport flight crew loses control of their aircraft when it enters a storm cell during a holding pattern procedure at FL330. Night operation. ZDC center.

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Attributes
ACN	398940
Time
Date	199804
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : pxt
State Reference	MD
Altitude	msl bound lower : 32600 msl bound upper : 33000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 2000
ASRS Report	398940
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather inflight encounter other non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : exited adverse environment flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

While at holding speed 245 KTS, got navigation errors and (due to strong winds, turbulence, and fatigue) drifting off course in hold. While correcting, entered a cell. Aircraft vibrated, lost autoplt, gained and lost 400 ft before regaining control of aircraft. Advised ATC of occurrence.

Original NASA ASRS Text

Title: AN ACR MLG FLC LOSES CTL OF THEIR ACFT WHEN IT ENTERS A STORM CELL DURING A HOLDING PATTERN PROC AT FL330. NIGHT OP. ZDC CTR.

Narrative: WHILE AT HOLDING SPD 245 KTS, GOT NAV ERRORS AND (DUE TO STRONG WINDS, TURB, AND FATIGUE) DRIFTING OFF COURSE IN HOLD. WHILE CORRECTING, ENTERED A CELL. ACFT VIBRATED, LOST AUTOPLT, GAINED AND LOST 400 FT BEFORE REGAINING CTL OF ACFT. ADVISED ATC OF OCCURRENCE.

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.