Aircraft equipment design problem on cpr small transport jet.

Attributes
ACN	267485
Time
Date	199404
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : fll
State Reference	FL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pia
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude climbout : takeoff ground : preflight
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 7500 flight time type : 75
ASRS Report	267485
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Jet is single pilot certified with autoplt required. Aircraft was 90 hours since new. Multiple autoplt problems. It doesn't handle speed changes very well. Multiple autoplt inoperative lights. You have to cycle flight guidance circuit breaker to restore autoplt. When you do, primary flight instruments (attitude indicator and HSI) drop off and reset (takes 3-5 seconds to reset). It dumps all inputs and you must re-enter. Also, it tends to make aircraft skid through the air. Manual trim inputs often cause autoplt to kick off with sudden control inputs. Occasionally, the ball will slowly 'walk' back and forth from side to side with attendant out of trim flight condition.

Original NASA ASRS Text

Title: ACFT EQUIP DESIGN PROB ON CPR SMT JET.

Narrative: JET IS SINGLE PLT CERTIFIED WITH AUTOPLT REQUIRED. ACFT WAS 90 HRS SINCE NEW. MULTIPLE AUTOPLT PROBS. IT DOESN'T HANDLE SPD CHANGES VERY WELL. MULTIPLE AUTOPLT INOP LIGHTS. YOU HAVE TO CYCLE FLT GUIDANCE CIRCUIT BREAKER TO RESTORE AUTOPLT. WHEN YOU DO, PRIMARY FLT INSTS (ATTITUDE INDICATOR AND HSI) DROP OFF AND RESET (TAKES 3-5 SECONDS TO RESET). IT DUMPS ALL INPUTS AND YOU MUST RE-ENTER. ALSO, IT TENDS TO MAKE ACFT SKID THROUGH THE AIR. MANUAL TRIM INPUTS OFTEN CAUSE AUTOPLT TO KICK OFF WITH SUDDEN CTL INPUTS. OCCASIONALLY, THE BALL WILL SLOWLY 'WALK' BACK AND FORTH FROM SIDE TO SIDE WITH ATTENDANT OUT OF TRIM FLT CONDITION.

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.