Airspeed deviation during departure procedure.

Attributes
ACN	221587
Time
Date	199209
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : msp
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 12500 flight time type : 1000
ASRS Report	221587
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : undershoot inflight encounter : weather non adherence : clearance non adherence : far other anomaly other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

We took off out of msp after a thunderstorm line passed. We leveled off at 4000 ft to stay under some buildups. Our speed went from 250 to 300 KTS all at once. We kept the power where it was and used speed brakes to slow. Also, while this was happening, we got a pull-up message and the radio altimeter showed 500 ft. At 4000 ft we were well above the MEA. The pull-up signal was a reflection off an inversion.

Original NASA ASRS Text

Title: AIRSPD DEV DURING DEP PROC.

Narrative: WE TOOK OFF OUT OF MSP AFTER A TSTM LINE PASSED. WE LEVELED OFF AT 4000 FT TO STAY UNDER SOME BUILDUPS. OUR SPD WENT FROM 250 TO 300 KTS ALL AT ONCE. WE KEPT THE PWR WHERE IT WAS AND USED SPD BRAKES TO SLOW. ALSO, WHILE THIS WAS HAPPENING, WE GOT A PULL-UP MESSAGE AND THE RADIO ALTIMETER SHOWED 500 FT. AT 4000 FT WE WERE WELL ABOVE THE MEA. THE PULL-UP SIGNAL WAS A REFLECTION OFF AN INVERSION.

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.