<< >> NASA ASRS Report 512885, May 2001

An A320 flight crew exceeds the speed limit for flap extension from the 0 degree position to the 2 degree position 5 NM south of den, co.

Attributes
ACN	512885
Time
Date	200105
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	msl single value : 8000
Environment
Weather Elements	Turbulence
Light	Night
Aircraft 1
Controlling Facilities	tower : den.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 35r
Flight Phase	descent : approach
Route In Use	approach : straight in approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 3367
ASRS Report	512885
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	inflight encounter : turbulence inflight encounter : weather non adherence : far non adherence : company policies non adherence : published procedure other anomaly
Independent Detector	aircraft equipment other aircraft equipment : ovspd wng horn other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Weather Flight Crew Human Performance Aircraft Environmental Factor
Primary Problem	Flight Crew Human Performance

Narrative:

Distraction by area WX and abeam aircraft joining final for runway 35L. When told to switch to tower frequency, first officer called for flaps 2 degrees. At the time, though I thought to check indicated airspeed, I knew we were getting close, so made the flap selection and remained heads down making the frequency change to tower. I then checked indicated airspeed above SOP speed. Shortly thereafter, we got the overspd warning horn. It was not the tower frequency I had expected. I could have prevented this by following established practice of checking for myself the indicated airspeed prior to selecting flaps. I should have checked indicated airspeed and then requested a repeat of tower frequency.

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Original NASA ASRS Text

Title: AN A320 FLC EXCEEDS THE SPD LIMIT FOR FLAP EXTENSION FROM THE 0 DEG POS TO THE 2 DEG POS 5 NM S OF DEN, CO.

Narrative: DISTR BY AREA WX AND ABEAM ACFT JOINING FINAL FOR RWY 35L. WHEN TOLD TO SWITCH TO TWR FREQ, FO CALLED FOR FLAPS 2 DEGS. AT THE TIME, THOUGH I THOUGHT TO CHK INDICATED AIRSPD, I KNEW WE WERE GETTING CLOSE, SO MADE THE FLAP SELECTION AND REMAINED HEADS DOWN MAKING THE FREQ CHANGE TO TWR. I THEN CHKED INDICATED AIRSPD ABOVE SOP SPD. SHORTLY THEREAFTER, WE GOT THE OVERSPD WARNING HORN. IT WAS NOT THE TWR FREQ I HAD EXPECTED. I COULD HAVE PREVENTED THIS BY FOLLOWING ESTABLISHED PRACTICE OF CHKING FOR MYSELF THE INDICATED AIRSPD PRIOR TO SELECTING FLAPS. I SHOULD HAVE CHKED INDICATED AIRSPD AND THEN REQUESTED A REPEAT OF TWR FREQ.

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.