Flight crew of an medium large transport overshot altitude on descent.

Attributes
ACN	313440
Time
Date	199508
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : abq
State Reference	NM
Altitude	msl bound lower : 30600 msl bound upper : 31000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zab
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 9000 flight time type : 3000
ASRS Report	313440
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Deviating around numerous thunderstorms. Given descent to FL310 from FL330. Unable to avoid cumulo nimbus because of descent. Light to occasional moderate turbulence. Autoplt altitude either mis-set to FL300, bumped in turbulence while setting other knobs on panel or ? Passed through FL310 in moderate turbulence. Descent arrested at FL306. ATC claimed no problem -- no conflict.

Original NASA ASRS Text

Title: FLC OF AN MLG OVERSHOT ALT ON DSCNT.

Narrative: DEVIATING AROUND NUMEROUS TSTMS. GIVEN DSCNT TO FL310 FROM FL330. UNABLE TO AVOID CUMULO NIMBUS BECAUSE OF DSCNT. LIGHT TO OCCASIONAL MODERATE TURB. AUTOPLT ALT EITHER MIS-SET TO FL300, BUMPED IN TURB WHILE SETTING OTHER KNOBS ON PANEL OR ? PASSED THROUGH FL310 IN MODERATE TURB. DSCNT ARRESTED AT FL306. ATC CLAIMED NO PROB -- NO CONFLICT.

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.