<< >> NASA ASRS Report 539044, February 2002

FA50 flight crew momentarily lost aircraft control and climbed above assigned cruising altitude due to inadvertent autoplt malfunction.

Attributes
ACN	539044
Time
Date	200202
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : permt
State Reference	FL
Altitude	msl single value : 20000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma.artcc
Operator	general aviation : corporate
Make Model Name	Falcon 50
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zma.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 180 flight time total : 16400 flight time type : 3500
ASRS Report	539044
Person 2
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly
Independent Detector	other controllerb
Resolutory Action	flight crew : regained aircraft control flight crew : overcame equipment problem flight crew : returned to assigned altitude
Consequence	other
Miss Distance	horizontal : 15000 vertical : 700
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

Autoplt pitch up. Cruising at FL200, autoplt pitched up. Stopped climb at FL203. Other aircraft at FL210, approximately 34 NM offset. Remainder of flight uneventful.

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Original NASA ASRS Text

Title: FA50 FLC MOMENTARILY LOST ACFT CTL AND CLBED ABOVE ASSIGNED CRUISING ALT DUE TO INADVERTENT AUTOPLT MALFUNCTION.

Narrative: AUTOPLT PITCH UP. CRUISING AT FL200, AUTOPLT PITCHED UP. STOPPED CLB AT FL203. OTHER ACFT AT FL210, APPROX 34 NM OFFSET. REMAINDER OF FLT UNEVENTFUL.

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.