<< >> NASA ASRS Report 306005, May 1995

Flying doctor suffers loss of aircraft control after autoplt malfunctions. Altitude deviation altitude excursion. Non adherence to ATC clearance.

Attributes
ACN	306005
Time
Date	199505
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : 2g4
State Reference	MD
Altitude	msl bound lower : 4700 msl bound upper : 5000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 600 flight time type : 400
ASRS Report	306005
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Controller told me to make a right turn and go to VOR. I was in the clouds. Autoplt failed, took plane straight up, stalled and dove left. I fell 300 ft before recovering (air traffic controller was mad). I made right turn and climbed back to altitude and went to VOR. After leaving VOR, approach told me to switch to 1200 and land. After landing I failed to close flight plan (I was shook up). Took plane to gsp to have autoplt repaired. I have 3 trips to simcom planned this yr for training. If it were not for the training I could have fallen a lot further and may not have been able to recover. I recognized the problem and kicked off the autoplt, but the plane had shot straight up and rolled left and went into a dive. I will get recurrent training and upgrade my skills.

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Original NASA ASRS Text

Title: FLYING DOCTOR SUFFERS LOSS OF ACFT CTL AFTER AUTOPLT MALFUNCTIONS. ALTDEV ALT EXCURSION. NON ADHERENCE TO ATC CLRNC.

Narrative: CTLR TOLD ME TO MAKE A R TURN AND GO TO VOR. I WAS IN THE CLOUDS. AUTOPLT FAILED, TOOK PLANE STRAIGHT UP, STALLED AND DOVE L. I FELL 300 FT BEFORE RECOVERING (AIR TFC CTLR WAS MAD). I MADE R TURN AND CLBED BACK TO ALT AND WENT TO VOR. AFTER LEAVING VOR, APCH TOLD ME TO SWITCH TO 1200 AND LAND. AFTER LNDG I FAILED TO CLOSE FLT PLAN (I WAS SHOOK UP). TOOK PLANE TO GSP TO HAVE AUTOPLT REPAIRED. I HAVE 3 TRIPS TO SIMCOM PLANNED THIS YR FOR TRAINING. IF IT WERE NOT FOR THE TRAINING I COULD HAVE FALLEN A LOT FURTHER AND MAY NOT HAVE BEEN ABLE TO RECOVER. I RECOGNIZED THE PROB AND KICKED OFF THE AUTOPLT, BUT THE PLANE HAD SHOT STRAIGHT UP AND ROLLED L AND WENT INTO A DIVE. I WILL GET RECURRENT TRAINING AND UPGRADE MY SKILLS.

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.