Speed deviation below 10000 ft.

Attributes
ACN	201780
Time
Date	199202
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ind
State Reference	IN
Altitude	msl bound lower : 8000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ind
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7000 flight time type : 35
ASRS Report	201780
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : far other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation other

Narrative:

Descent at 250 KTS automatic pilot on flight director failed-speed brakes retracted-and automatic throttle came on with power. Nose attitude remained 8 to 10 degrees nose down until automatic pilot and automatic throttle were disconnected and recovery was made. Speed increased to 275 KTS below 10000 for approximately 10 to 20 seconds. Recovery from overspd (i.e. 250 below 10000) was done smoothly and speed stabilized at 250 KTS shortly thereafter. There was no other traffic involved and approach control did not mention the slight overspd. Automatic pilot was re-engaged after flight director was cycled off then on. Ground tested good at ind.

Original NASA ASRS Text

Title: SPD DEV BELOW 10000 FT.

Narrative: DSCNT AT 250 KTS AUTO PLT ON FLT DIRECTOR FAILED-SPD BRAKES RETRACTED-AND AUTO THROTTLE CAME ON WITH PWR. NOSE ATTITUDE REMAINED 8 TO 10 DEGS NOSE DOWN UNTIL AUTO PLT AND AUTO THROTTLE WERE DISCONNECTED AND RECOVERY WAS MADE. SPD INCREASED TO 275 KTS BELOW 10000 FOR APPROX 10 TO 20 SECONDS. RECOVERY FROM OVERSPD (I.E. 250 BELOW 10000) WAS DONE SMOOTHLY AND SPD STABILIZED AT 250 KTS SHORTLY THEREAFTER. THERE WAS NO OTHER TFC INVOLVED AND APCH CTL DID NOT MENTION THE SLIGHT OVERSPD. AUTO PLT WAS RE-ENGAGED AFTER FLT DIRECTOR WAS CYCLED OFF THEN ON. GND TESTED GOOD AT IND.

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.