Distraction by taxi and an ATC interruption; B757 crew takes off without receiving final weights.

Attributes
ACN	670411
Time
Date	200509
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 0
Aircraft 1
Controlling Facilities	tower : bdl.tower
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 300 flight time total : 6300 flight time type : 1495
ASRS Report	670411
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 210 flight time total : 13000 flight time type : 4000
ASRS Report	670408
Events
Anomaly	non adherence : far non adherence : published procedure non adherence : company policies
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Company Flight Crew Human Performance
Primary Problem	Company

Narrative:

28 mins after push back; we took off uneventfully. Half way through the flight; I realized that we departed without the final weights. We then sent an ACARS message to load planning telling them this and received the weights. There was only a 1200 pound difference from the actual. My concern first is had we not discovered and made this known; no one else would have notified us. Second; we were on the ground 28 mins and load planning sent nothing. I've had to get on load planning several times in the past to send us weights. Supplemental information from acn 670408: there was one human factor involved and that was getting out of a routine. We think that our initial checklist was interrupted by ATC and then when we ran it a second time we thought that we already had the weights and failed to confirm that we did actually have them. The very scary part is that load planning had no clue that they had never sent the weights. The new load planning definitely contributed to this incident.

Original NASA ASRS Text

Title: DISTR BY TAXI AND AN ATC INTERRUPTION; B757 CREW TAKES OFF WITHOUT RECEIVING FINAL WTS.

Narrative: 28 MINS AFTER PUSH BACK; WE TOOK OFF UNEVENTFULLY. HALF WAY THROUGH THE FLT; I REALIZED THAT WE DEPARTED WITHOUT THE FINAL WTS. WE THEN SENT AN ACARS MSG TO LOAD PLANNING TELLING THEM THIS AND RECEIVED THE WTS. THERE WAS ONLY A 1200 LB DIFFERENCE FROM THE ACTUAL. MY CONCERN FIRST IS HAD WE NOT DISCOVERED AND MADE THIS KNOWN; NO ONE ELSE WOULD HAVE NOTIFIED US. SECOND; WE WERE ON THE GND 28 MINS AND LOAD PLANNING SENT NOTHING. I'VE HAD TO GET ON LOAD PLANNING SEVERAL TIMES IN THE PAST TO SEND US WTS. SUPPLEMENTAL INFO FROM ACN 670408: THERE WAS ONE HUMAN FACTOR INVOLVED AND THAT WAS GETTING OUT OF A ROUTINE. WE THINK THAT OUR INITIAL CHKLIST WAS INTERRUPTED BY ATC AND THEN WHEN WE RAN IT A SECOND TIME WE THOUGHT THAT WE ALREADY HAD THE WTS AND FAILED TO CONFIRM THAT WE DID ACTUALLY HAVE THEM. THE VERY SCARY PART IS THAT LOAD PLANNING HAD NO CLUE THAT THEY HAD NEVER SENT THE WTS. THE NEW LOAD PLANNING DEFINITELY CONTRIBUTED TO THIS INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 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.