Air carrier large transport takeoff over gross for runway length; aircraft takeoff performance based...

Attributes
ACN	156500
Time
Date	199009
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 30
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 180
ASRS Report	156500
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : far non adherence other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Crew entered takeoff data in ACARS including fuel load of 39000 pounds. Taxi out commenced while load data was sent via ACARS. Captain anticipated lengthy taxi so two engine taxi out was used to conserve fuel. Taxi out was fast, so third engine start and takeoff check were done fairly rushed. ACARS TOGW was just below runway limit and we had 11 KT headwind. Aircraft rotation was slow and 'mushy' and liftoff was achieved with approximately 800' of runway remaining. During climb second officer remarked that load data received from the station only showed 27000 pounds fuel which was 12000 less then actually on board which made us overweight for runway. Causes include inadequate load comparison/xchking by crew and load advice personnel; ACARS inability to distinguish obvious fuel difference and alert crew or station personnel; fast taxi and additional duties of starting engine during taxi out created rushed atmosphere; failure of second officer to xfer load data to takeoff data form (instead ACARS was written on takeoff data form).

Original NASA ASRS Text

Title: ACR LGT TKOF OVER GROSS FOR RWY LENGTH; ACFT TKOF PERFORMANCE BASED ON FUEL LOAD 12000 LBS LESS THAN ACTUALLY ON BOARD.

Narrative: CREW ENTERED TKOF DATA IN ACARS INCLUDING FUEL LOAD OF 39000 LBS. TAXI OUT COMMENCED WHILE LOAD DATA WAS SENT VIA ACARS. CAPT ANTICIPATED LENGTHY TAXI SO TWO ENG TAXI OUT WAS USED TO CONSERVE FUEL. TAXI OUT WAS FAST, SO THIRD ENG START AND TKOF CHK WERE DONE FAIRLY RUSHED. ACARS TOGW WAS JUST BELOW RWY LIMIT AND WE HAD 11 KT HEADWIND. ACFT ROTATION WAS SLOW AND 'MUSHY' AND LIFTOFF WAS ACHIEVED WITH APPROX 800' OF RWY REMAINING. DURING CLB S/O REMARKED THAT LOAD DATA RECEIVED FROM THE STATION ONLY SHOWED 27000 LBS FUEL WHICH WAS 12000 LESS THEN ACTUALLY ON BOARD WHICH MADE US OVERWEIGHT FOR RWY. CAUSES INCLUDE INADEQUATE LOAD COMPARISON/XCHKING BY CREW AND LOAD ADVICE PERSONNEL; ACARS INABILITY TO DISTINGUISH OBVIOUS FUEL DIFFERENCE AND ALERT CREW OR STATION PERSONNEL; FAST TAXI AND ADDITIONAL DUTIES OF STARTING ENG DURING TAXI OUT CREATED RUSHED ATMOSPHERE; FAILURE OF S/O TO XFER LOAD DATA TO TKOF DATA FORM (INSTEAD ACARS WAS WRITTEN ON TKOF DATA FORM).

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.

Air carrier large transport takeoff over gross for runway length; aircraft takeoff performance based on fuel load 12000 pounds less than actually on board.