400 ft excursion from assigned altitude.

Attributes
ACN	462440
Time
Date	200002
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : hec.vor
State Reference	CA
Altitude	msl bound lower : 23600 msl bound upper : 24000
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	462440
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Z time: XA00Z. Frequency/altitude: unknown/FL240. ATC facility: lax. Location: hec. To IAS from mach. Altitude hold reverted to vertical speed lost 400 ft before recovery. No incident noted.

Original NASA ASRS Text

Title: 400 FT EXCURSION FROM ASSIGNED ALT.

Narrative: Z TIME: XA00Z. FREQ/ALT: UNKNOWN/FL240. ATC FACILITY: LAX. LOCATION: HEC. TO IAS FROM MACH. ALT HOLD REVERTED TO VERT SPEED LOST 400 FT BEFORE RECOVERY. NO INCIDENT NOTED.

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.