Altitude deviation altitude overshot as widebody transport encounters wind shear and turbulence and autoplt unable to counter increased rate of climb.

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Attributes
ACN	203592
Time
Date	199202
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : hnl
State Reference	HI
Altitude	msl bound lower : 31000 msl bound upper : 32000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhn
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : pacific enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 25000 flight time type : 8500
ASRS Report	203592
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
ASRS Report	202696
Events
Anomaly	altitude deviation : overshoot inflight encounter other non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Just prior to level off aircraft encountered moderate plus turbulence. Rate of climb went full scale up as mach increased to mach .88-.89. Autoplt was disconnected and controled level off and return to 31500 accomplished. Altitude peaked about 32000. No cabin problems reported. Do not have any comments on prevention of similar recurrence due to WX circumstances.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT AS WDB ENCOUNTERS WIND SHEAR AND TURB AND AUTOPLT UNABLE TO COUNTER INCREASED RATE OF CLB.

Narrative: JUST PRIOR TO LEVEL OFF ACFT ENCOUNTERED MODERATE PLUS TURB. RATE OF CLB WENT FULL SCALE UP AS MACH INCREASED TO MACH .88-.89. AUTOPLT WAS DISCONNECTED AND CTLED LEVEL OFF AND RETURN TO 31500 ACCOMPLISHED. ALT PEAKED ABOUT 32000. NO CABIN PROBLEMS RPTED. DO NOT HAVE ANY COMMENTS ON PREVENTION OF SIMILAR RECURRENCE DUE TO WX CIRCUMSTANCES.

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.