Private pilot of a beech bonanza, BE35, leveled off at the wrong altitude for the direction of flight. He caught his error after a few mins and corrected to the next higher and appropriate altitude.

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Attributes
ACN	397740
Time
Date	199803
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cvg
State Reference	OH
Altitude	msl bound lower : 10500 msl bound upper : 11500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid
Operator	general aviation : personal
Make Model Name	Bonanza 35
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	other other : other pilot : private pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 800 flight time type : 250
ASRS Report	397740
Events
Anomaly	non adherence : far other anomaly other other spatial deviation
Independent Detector	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:

Flying VFR on top at 9500 ft. Climb needed to stay on top - - target altitude 11500 ft. Climb was stopped at 10500 ft (improper for direction of flight). Why? I don't know. Human error probably caused by very little sleep the previous night. Not as alert as should have been. Error corrected a few mins later.

Original NASA ASRS Text

Title: PVT PLT OF A BEECH BONANZA, BE35, LEVELED OFF AT THE WRONG ALT FOR THE DIRECTION OF FLT. HE CAUGHT HIS ERROR AFTER A FEW MINS AND CORRECTED TO THE NEXT HIGHER AND APPROPRIATE ALT.

Narrative: FLYING VFR ON TOP AT 9500 FT. CLB NEEDED TO STAY ON TOP - - TARGET ALT 11500 FT. CLB WAS STOPPED AT 10500 FT (IMPROPER FOR DIRECTION OF FLT). WHY? I DON'T KNOW. HUMAN ERROR PROBABLY CAUSED BY VERY LITTLE SLEEP THE PREVIOUS NIGHT. NOT AS ALERT AS SHOULD HAVE BEEN. ERROR CORRECTED A FEW MINS LATER.

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.