Altitude deviation altitude overshot during climb by private pilot in small aircraft.

Attributes
ACN	201834
Time
Date	199202
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : prc
State Reference	AZ
Altitude	msl bound lower : 10000 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute airway : zab
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 50 flight time total : 605 flight time type : 260
ASRS Report	201834
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : overshoot inflight encounter other non adherence : clearance
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

About 1/2 way I was in and out of clouds. At the time of altitude deviation there was turbulence and a rapid altitude change of about 500 ft. I leveled at 11000. I noticed the error at about the same time the center contacted me. I immediately returned to 10000. There were no major deviation after that. I believe the problem was caused by inexperience in mountain flying and the accompanying wind convection and windshear. Also almost all of my flying is done in the midwest and below 10000 ft. It probably took me longer to recognize, the altimeter reading difference between 10000 and 11000, than it should have.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT DURING CLB BY PVT PLT IN SMA.

Narrative: ABOUT 1/2 WAY I WAS IN AND OUT OF CLOUDS. AT THE TIME OF ALTDEV THERE WAS TURB AND A RAPID ALT CHANGE OF ABOUT 500 FT. I LEVELED AT 11000. I NOTICED THE ERROR AT ABOUT THE SAME TIME THE CTR CONTACTED ME. I IMMEDIATELY RETURNED TO 10000. THERE WERE NO MAJOR DEV AFTER THAT. I BELIEVE THE PROBLEM WAS CAUSED BY INEXPERIENCE IN MOUNTAIN FLYING AND THE ACCOMPANYING WIND CONVECTION AND WINDSHEAR. ALSO ALMOST ALL OF MY FLYING IS DONE IN THE MIDWEST AND BELOW 10000 FT. IT PROBABLY TOOK ME LONGER TO RECOGNIZE, THE ALTIMETER READING DIFFERENCE BTWN 10000 AND 11000, THAN IT SHOULD HAVE.

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.