<< >> NASA ASRS Report 511880, May 2001

BE58 pilot allows his aircraft to drift up to 11000 ft MSL when he fails to note that the altitude hold was not engaged near rock springs, wy.

Attributes
ACN	511880
Time
Date	200105
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zdv.artcc
State Reference	CO
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Baron 58/58TC
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 50 flight time total : 8000 flight time type : 2000
ASRS Report	511880
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Resolutory Action	flight crew : returned to assigned altitude flight crew : became reoriented
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

IFR cleared direct cheyenne to oes to slc. Cleared to 10000 ft. Thought altitude hold engaged but wasn't. Drifted up to 11000 ft. Solution: make sure altitude hold engaged.

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Original NASA ASRS Text

Title: BE58 PLT ALLOWS HIS ACFT TO DRIFT UP TO 11000 FT MSL WHEN HE FAILS TO NOTE THAT THE ALT HOLD WAS NOT ENGAGED NEAR ROCK SPRINGS, WY.

Narrative: IFR CLRED DIRECT CHEYENNE TO OES TO SLC. CLRED TO 10000 FT. THOUGHT ALT HOLD ENGAGED BUT WASN'T. DRIFTED UP TO 11000 FT. SOLUTION: MAKE SURE ALT HOLD ENGAGED.

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.