Cirrus SR22 pilot during climb has the autoplt malfunction and overshoots assigned altitude.

Attributes
ACN	698976
Time
Date	200605
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : n90.tracon
State Reference	NY
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	general aviation : personal
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument pilot : multi engine pilot : commercial
Experience	flight time last 90 days : 35 flight time total : 2400 flight time type : 735
ASRS Report	698976
Person 2
Affiliation	government : faa
Function	controller : departure
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : provided flight assist controller : issued new clearance flight crew : overcame equipment problem flight crew : returned to assigned altitude
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

Was on an IFR departure in IMC from cdw (essex county); nj. Upon engaging the autoplt on departure I encountered excessive climb rate; excessive turn pressure requiring a lot of muscle force on the stick; and would not top at programmed altitude. I engaged and released the autoplt numerous times with the same negative results when re-engaged. I would enter a climb request of 600 FPM and it would jump to 1600 FPM. On climb out; I was given 040 degrees runway heading to maximum 2000 ft. I did not receive instructions to go to departure from the tower. I checked in myself and told them I was heading 040 degrees and asked about the turn. He cleared me from heading 040 degrees to 175 degrees. I believe I stated right turn to 175 degrees and started turning. He suggested I review the departure procedure. I was given higher altitude and again had a lot of pressure and rapid climb rate with autoplt which overshot by 300-500 ft my altitude target. I was given an intercept radial on a VOR. Because of the control problems with the autoplt I asked for a vector. I thought this would be safer as I was fighting the pressure and climb problems. The controller was good and very helpful and got me on V-1 going south. I thanked him for his help which was very appreciated. The rest of the flight was uneventful as long as I did not engage the autoplt to climb or descend.

Original NASA ASRS Text

Title: CIRRUS SR22 PLT DURING CLB HAS THE AUTOPLT MALFUNCTION AND OVERSHOOTS ASSIGNED ALT.

Narrative: WAS ON AN IFR DEP IN IMC FROM CDW (ESSEX COUNTY); NJ. UPON ENGAGING THE AUTOPLT ON DEP I ENCOUNTERED EXCESSIVE CLB RATE; EXCESSIVE TURN PRESSURE REQUIRING A LOT OF MUSCLE FORCE ON THE STICK; AND WOULD NOT TOP AT PROGRAMMED ALT. I ENGAGED AND RELEASED THE AUTOPLT NUMEROUS TIMES WITH THE SAME NEGATIVE RESULTS WHEN RE-ENGAGED. I WOULD ENTER A CLB REQUEST OF 600 FPM AND IT WOULD JUMP TO 1600 FPM. ON CLBOUT; I WAS GIVEN 040 DEGS RWY HDG TO MAX 2000 FT. I DID NOT RECEIVE INSTRUCTIONS TO GO TO DEP FROM THE TWR. I CHKED IN MYSELF AND TOLD THEM I WAS HDG 040 DEGS AND ASKED ABOUT THE TURN. HE CLRED ME FROM HDG 040 DEGS TO 175 DEGS. I BELIEVE I STATED R TURN TO 175 DEGS AND STARTED TURNING. HE SUGGESTED I REVIEW THE DEP PROC. I WAS GIVEN HIGHER ALT AND AGAIN HAD A LOT OF PRESSURE AND RAPID CLB RATE WITH AUTOPLT WHICH OVERSHOT BY 300-500 FT MY ALT TARGET. I WAS GIVEN AN INTERCEPT RADIAL ON A VOR. BECAUSE OF THE CTL PROBS WITH THE AUTOPLT I ASKED FOR A VECTOR. I THOUGHT THIS WOULD BE SAFER AS I WAS FIGHTING THE PRESSURE AND CLB PROBS. THE CTLR WAS GOOD AND VERY HELPFUL AND GOT ME ON V-1 GOING S. I THANKED HIM FOR HIS HELP WHICH WAS VERY APPRECIATED. THE REST OF THE FLT WAS UNEVENTFUL AS LONG AS I DID NOT ENGAGE THE AUTOPLT TO CLB OR DSND.

Data retrieved from NASA's ASRS site as of January 2009 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.