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A B767 captain believes some computed weight and balance calculations in their aom are inaccurate.
| Attributes | |
| ACN | 942122 |
| Time | |
| Date | 201104 |
| Aircraft 1 | |
| Make Model Name | B767-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Procedural Weight And Balance |
Narrative:
While researching the center of gravity (cg) limits for our flight we discovered the following anomaly for weight and balance calculations. I was very impressed with how close the adjusted weights method gets to the computer. But; and here is the rub; the adjusted weights cg is out when compared to an exact same load computed on the computer. I think that the cg envelope in the aom is wrong. It just does not move for the adjusted weights method like the other aircraft do. All the other aircraft have a reduced cg envelope when you do a manual weight and balance which in my mind makes for a safer procedure because doing so allows for a safe margin in case of computational errors. I have brought this up to management and have gotten the standard brick wall and dumb stare. Next step in my opinion is a safety report.
Original NASA ASRS Text
Title: A B767 Captain believes some computed weight and balance calculations in their AOM are inaccurate.
Narrative: While researching the Center of Gravity (CG) limits for our flight we discovered the following anomaly for weight and balance calculations. I was very impressed with how close the adjusted weights method gets to the computer. But; and here is the rub; the adjusted weights CG is out when compared to an exact same load computed on the computer. I think that the CG envelope in the AOM is wrong. It just does not move for the adjusted weights method like the other aircraft do. All the other aircraft have a reduced CG envelope when you do a manual weight and balance which in my mind makes for a safer procedure because doing so allows for a safe margin in case of computational errors. I have brought this up to management and have gotten the standard brick wall and dumb stare. Next step in my opinion is a safety report.
Data retrieved from NASA's ASRS site as of April 2012 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.