An airbus in descent at 12000 ft, FMS and autoplt allowed aircraft to exceed structural limit airspe...

Attributes
ACN	449184
Time
Date	199909
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewr.airport
State Reference	NJ
Altitude	msl single value : 12000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8500 flight time type : 400
ASRS Report	449184
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

While descending on an approach into ewr, we were given a crossing restr. While attempting to make the flight restr, the autoplt/FMS allowed the aircraft to exceed its maximum limit of 350 KIAS. Maximum airspeed achieved was approximately 358 KIAS. The captain (also the PF) disconnected the autoplt and reduced the descent rate. The aircraft then decelerated to an appropriate airspeed. Total time airspeed was +350 KIAS was approximately 10 seconds.

Original NASA ASRS Text

Title: AN AIRBUS IN DSCNT AT 12000 FT, FMS AND AUTOPLT ALLOWED ACFT TO EXCEED STRUCTURAL LIMIT AIRSPD BY 8 KTS.

Narrative: WHILE DSNDING ON AN APCH INTO EWR, WE WERE GIVEN A XING RESTR. WHILE ATTEMPTING TO MAKE THE FLT RESTR, THE AUTOPLT/FMS ALLOWED THE ACFT TO EXCEED ITS MAX LIMIT OF 350 KIAS. MAX AIRSPD ACHIEVED WAS APPROX 358 KIAS. THE CAPT (ALSO THE PF) DISCONNECTED THE AUTOPLT AND REDUCED THE DSCNT RATE. THE ACFT THEN DECELERATED TO AN APPROPRIATE AIRSPD. TOTAL TIME AIRSPD WAS +350 KIAS WAS APPROX 10 SECONDS.

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.

An airbus in descent at 12000 ft, FMS and autoplt allowed aircraft to exceed structural limit airspeed by 8 KTS.