Temporary loss of aircraft control in simulated single engine training.

Attributes
ACN	286833
Time
Date	199410
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hsv
State Reference	AL
Altitude	agl bound lower : 50 agl bound upper : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : hsv
Operator	general aviation : instructional
Make Model Name	Cessna 310/T310C
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : go around other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot instruction : instructor
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 105 flight time total : 1880 flight time type : 90
ASRS Report	286833
Person 2
Affiliation	Other
Function	flight crew : single pilot instruction : trainee
Qualification	pilot : commercial
Events
Anomaly	other anomaly other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

In sum: an instructor with student set up a simulated single engine problem in a cessna 310. The student decided to feather the 'failed' right engine, so the instructor set up a simulated feather situation. The student at no time retrimmed the aircraft for single engine flight. At GS interception, the landing gear was extended and the flaps were left up per flight manual recommendations. A stop and go landing was planned. During the landing flare, the student allowed the aircraft to yaw to the left. The instructor called for more right rudder, then got on the rudder to help. The instructor found that the right rudder was already to the firewall. The instructor called for a go around and power was advanced on both engines. The rudder problem did not go away. The landing gear was retracted and an emergency was declared. As soon as the instructor got off of the rudder pedal, the ball went back to the center and the problem disappeared. A normal landing was then made with the right landing gear door still extended. There was no aircraft damage and the controls worked properly. The aircraft owner (not the reporter) thinks that this was a 'VMC problem,' the reporter let the airspeed get too low for the confign. The reporter realizes that he should have reduced the power on the right engine when the aircraft became nearly uncontrollable. Callback conversation with reporter revealed the following information: the reporter has been unable to fly the aircraft to determine the problem with the controls as the owner has taken the aircraft off of the line. The aircraft was trimmed up for normal 2-ENG flight during the entire episode. The reporter thinks that this may have been a 'VMC problem.'

Original NASA ASRS Text

Title: TEMPORARY LOSS OF ACFT CTL IN SIMULATED SINGLE ENG TRAINING.

Narrative: IN SUM: AN INSTRUCTOR WITH STUDENT SET UP A SIMULATED SINGLE ENG PROB IN A CESSNA 310. THE STUDENT DECIDED TO FEATHER THE 'FAILED' R ENG, SO THE INSTRUCTOR SET UP A SIMULATED FEATHER SIT. THE STUDENT AT NO TIME RETRIMMED THE ACFT FOR SINGLE ENG FLT. AT GS INTERCEPTION, THE LNDG GEAR WAS EXTENDED AND THE FLAPS WERE LEFT UP PER FLT MANUAL RECOMMENDATIONS. A STOP AND GO LNDG WAS PLANNED. DURING THE LNDG FLARE, THE STUDENT ALLOWED THE ACFT TO YAW TO THE L. THE INSTRUCTOR CALLED FOR MORE R RUDDER, THEN GOT ON THE RUDDER TO HELP. THE INSTRUCTOR FOUND THAT THE R RUDDER WAS ALREADY TO THE FIREWALL. THE INSTRUCTOR CALLED FOR A GAR AND PWR WAS ADVANCED ON BOTH ENGS. THE RUDDER PROB DID NOT GO AWAY. THE LNDG GEAR WAS RETRACTED AND AN EMER WAS DECLARED. AS SOON AS THE INSTRUCTOR GOT OFF OF THE RUDDER PEDAL, THE BALL WENT BACK TO THE CTR AND THE PROB DISAPPEARED. A NORMAL LNDG WAS THEN MADE WITH THE R LNDG GEAR DOOR STILL EXTENDED. THERE WAS NO ACFT DAMAGE AND THE CTLS WORKED PROPERLY. THE ACFT OWNER (NOT THE RPTR) THINKS THAT THIS WAS A 'VMC PROB,' THE RPTR LET THE AIRSPD GET TOO LOW FOR THE CONFIGN. THE RPTR REALIZES THAT HE SHOULD HAVE REDUCED THE PWR ON THE R ENG WHEN THE ACFT BECAME NEARLY UNCTLABLE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR HAS BEEN UNABLE TO FLY THE ACFT TO DETERMINE THE PROB WITH THE CTLS AS THE OWNER HAS TAKEN THE ACFT OFF OF THE LINE. THE ACFT WAS TRIMMED UP FOR NORMAL 2-ENG FLT DURING THE ENTIRE EPISODE. THE RPTR THINKS THAT THIS MAY HAVE BEEN A 'VMC PROB.'

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.