<< >> NASA ASRS Report 512500, May 2001

A320 crew departed from a runway intersection when the takeoff performance numbers were calculated on runway full length.

Attributes
ACN	512500
Time
Date	200105
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : iad.airport
State Reference	VA
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : fai.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Flight Phase	climbout : initial climbout : takeoff ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 439
ASRS Report	512500
Events
Anomaly	inflight encounter : weather non adherence : far non adherence : published procedure non adherence : company policies
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance

Narrative:

Could have been a rapidly increasing tailwind from the approaching WX. Takeoff proceeded normally. After departing local area and climbing out of 10000 ft, we discussed the takeoff and realized that we departed from an intersection using full length takeoff data. Human factors and other considerations, time pressure to get flight out, last min aircraft change, approaching severe WX -- reduced visibility. Clearly there was a breakdown in my briefing to the first officer about NOTAMS and runway.

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Original NASA ASRS Text

Title: A320 CREW DEPARTED FROM A RWY INTXN WHEN THE TKOF PERFORMANCE NUMBERS WERE CALCULATED ON RWY FULL LENGTH.

Narrative: COULD HAVE BEEN A RAPIDLY INCREASING TAILWIND FROM THE APCHING WX. TKOF PROCEEDED NORMALLY. AFTER DEPARTING LCL AREA AND CLBING OUT OF 10000 FT, WE DISCUSSED THE TKOF AND REALIZED THAT WE DEPARTED FROM AN INTXN USING FULL LENGTH TKOF DATA. HUMAN FACTORS AND OTHER CONSIDERATIONS, TIME PRESSURE TO GET FLT OUT, LAST MIN ACFT CHANGE, APCHING SEVERE WX -- REDUCED VISIBILITY. CLRLY THERE WAS A BREAKDOWN IN MY BRIEFING TO THE FO ABOUT NOTAMS AND RWY.

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.