EA30 crew had aircraft overspd and did not comply with crossing restr.

Attributes
ACN	456895
Time
Date	199912
Day	Sat
Local Time Of Day	0001 To 0600
Place
State Reference	TN
Altitude	msl single value : 21000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zme.artcc
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Route In Use	arrival star : marvell 3
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7000 flight time type : 190
ASRS Report	456895
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : crossing restriction not met non adherence : clearance other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Prior to descent on marvell 3 arrival loaded and verified 325 KTS/12000 ft constraint at tammy. All FMS and navigation display indications normal. Began descent in profile mode from FL330 at TOD and inserted .80 mach/325 KT descent speed on tact page and activated. Descent shown as 'on profile' with correct navigation display arrows until approximately FL210. At that point aircraft abruptly nosed over and rapidly accelerated to 345 KTS with associated overspd warnings and flashing 'more drag' indication on pfd. Program page now showed approximately 6500 ft above profile. Selected level change, extended full speed brakes, slowed below vmo and continued descent at 330 KTS 'banana' immediately showed that we wouldn't be able to reach our assigned 12000 ft restr altitude at tammy. Informed ZME of our dilemma immediately. They didn't seem alarmed and turned us over to memphis approach control. To our knowledge, no loss of separation with any other aircraft occurred. Again, all FMS programming and indications were correct and standardized until we reached FL210 during descent. I detailed these events in the aircraft maintenance log and personally debriefed the mechanic. I briefed the air operations duty officer and submitted a company flight crew safety report as well.

Original NASA ASRS Text

Title: EA30 CREW HAD ACFT OVERSPD AND DID NOT COMPLY WITH XING RESTR.

Narrative: PRIOR TO DSCNT ON MARVELL 3 ARR LOADED AND VERIFIED 325 KTS/12000 FT CONSTRAINT AT TAMMY. ALL FMS AND NAV DISPLAY INDICATIONS NORMAL. BEGAN DSCNT IN PROFILE MODE FROM FL330 AT TOD AND INSERTED .80 MACH/325 KT DSCNT SPD ON TACT PAGE AND ACTIVATED. DSCNT SHOWN AS 'ON PROFILE' WITH CORRECT NAV DISPLAY ARROWS UNTIL APPROX FL210. AT THAT POINT ACFT ABRUPTLY NOSED OVER AND RAPIDLY ACCELERATED TO 345 KTS WITH ASSOCIATED OVERSPD WARNINGS AND FLASHING 'MORE DRAG' INDICATION ON PFD. PROGRAM PAGE NOW SHOWED APPROX 6500 FT ABOVE PROFILE. SELECTED LEVEL CHANGE, EXTENDED FULL SPD BRAKES, SLOWED BELOW VMO AND CONTINUED DSCNT AT 330 KTS 'BANANA' IMMEDIATELY SHOWED THAT WE WOULDN'T BE ABLE TO REACH OUR ASSIGNED 12000 FT RESTR ALT AT TAMMY. INFORMED ZME OF OUR DILEMMA IMMEDIATELY. THEY DIDN'T SEEM ALARMED AND TURNED US OVER TO MEMPHIS APCH CTL. TO OUR KNOWLEDGE, NO LOSS OF SEPARATION WITH ANY OTHER ACFT OCCURRED. AGAIN, ALL FMS PROGRAMMING AND INDICATIONS WERE CORRECT AND STANDARDIZED UNTIL WE REACHED FL210 DURING DSCNT. I DETAILED THESE EVENTS IN THE ACFT MAINT LOG AND PERSONALLY DEBRIEFED THE MECH. I BRIEFED THE AIR OPS DUTY OFFICER AND SUBMITTED A COMPANY FLC SAFETY RPT AS WELL.

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.