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Load planning error in takeoff gross weights for takeoff results in stabilizer green band warning on B777-200.
| Attributes | |
| ACN | 744286 |
| Time | |
| Date | 200707 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : eddf.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 18000 |
| ASRS Report | 744286 |
| Events | |
| Anomaly | non adherence : far non adherence : published procedure non adherence : company policies |
| Independent Detector | aircraft equipment other aircraft equipment : stab green band warning other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Company Flight Crew Human Performance |
| Primary Problem | Company |
Narrative:
At gate in fra ready for pushback. Got final weights from load planning. Noticed ZFW dropped by about 8000 pounds. Told captain. We put new numbers in FMC. New ZFW was approximately 401700 pounds with a mac of 36.4 giving us a trim of 3.75. On taxi out we got the 'stabilizer green band' advisory message. Rechecked and verified numbers were input correctly into FMC. (They were). Then got out flight manual and looked up the stabilizer green band anomaly. Our gross weight and mac were right in the middle of the 'nuisance region.' per the flight manual we elected to make the takeoff and it was uneventful. 12 mins after takeoff we got a new final weights from load planning. New ZFW was now 410100 pounds and new mac of 32. Just about that time got a note from dispatch stating that someone in fra operations made a 'big mistake.' perhaps the stabilizer green band wasn't a nuisance after all and the airplane was trying to tell us something. Think somebody should take another look at the 'nuisance region?'
Original NASA ASRS Text
Title: LOAD PLANNING ERROR IN TKOF GROSS WEIGHTS FOR TKOF RESULTS IN STAB GREEN BAND WARNING ON B777-200.
Narrative: AT GATE IN FRA READY FOR PUSHBACK. GOT FINAL WTS FROM LOAD PLANNING. NOTICED ZFW DROPPED BY ABOUT 8000 LBS. TOLD CAPT. WE PUT NEW NUMBERS IN FMC. NEW ZFW WAS APPROX 401700 LBS WITH A MAC OF 36.4 GIVING US A TRIM OF 3.75. ON TAXI OUT WE GOT THE 'STABILIZER GREEN BAND' ADVISORY MESSAGE. RECHECKED AND VERIFIED NUMBERS WERE INPUT CORRECTLY INTO FMC. (THEY WERE). THEN GOT OUT FLT MANUAL AND LOOKED UP THE STABILIZER GREEN BAND ANOMALY. OUR GROSS WT AND MAC WERE RIGHT IN THE MIDDLE OF THE 'NUISANCE REGION.' PER THE FLT MANUAL WE ELECTED TO MAKE THE TKOF AND IT WAS UNEVENTFUL. 12 MINS AFTER TKOF WE GOT A NEW FINAL WTS FROM LOAD PLANNING. NEW ZFW WAS NOW 410100 LBS AND NEW MAC OF 32. JUST ABOUT THAT TIME GOT A NOTE FROM DISPATCH STATING THAT SOMEONE IN FRA OPS MADE A 'BIG MISTAKE.' PERHAPS THE STABILIZER GREEN BAND WASN'T A NUISANCE AFTER ALL AND THE AIRPLANE WAS TRYING TO TELL US SOMETHING. THINK SOMEBODY SHOULD TAKE ANOTHER LOOK AT THE 'NUISANCE REGION?'
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.