Narrative:

After a long and difficult day of mechanical problems and canceled flts, I erroneously entered a cargo weight of 100 pounds that should have been 800 pounds. At that wrong weight, I advised the flight attendant to move passenger aft to obtain a higher index number to keep the aircraft within center of gravity limits. The flight attendant increased the index by 7, but later changed the number to 14. The load manifest reflected the index change. Upon takeoff, immediately after rotation, the first officer flying noted that the trim was set improperly. No further adverse characteristics were noted after the trim was reset. After landing and during postflt, I saw the cargo compartment loaded with well more than 100 pounds. I called operations at lax (our point of departure) and learned of my error xferring the cargo load to the manifest. I normally verify the load sheet by turning it over and looking at the bag count. I recalculated the manifest with the new information and found that the aircraft was actually 700 pounds heavier (well within limits) and aft center of gravity by 2.3 numbers.

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Original NASA ASRS Text

Title: AN LTT CREW, DEPARTING LAX, REALIZED THE CTR OF GRAVITY WAS CALCULATED WRONG DUE TO THE OUT OF TRIM CHARACTERISTICS OF THE ACFT.

Narrative: AFTER A LONG AND DIFFICULT DAY OF MECHANICAL PROBS AND CANCELED FLTS, I ERRONEOUSLY ENTERED A CARGO WT OF 100 LBS THAT SHOULD HAVE BEEN 800 LBS. AT THAT WRONG WT, I ADVISED THE FLT ATTENDANT TO MOVE PAX AFT TO OBTAIN A HIGHER INDEX NUMBER TO KEEP THE ACFT WITHIN CTR OF GRAVITY LIMITS. THE FLT ATTENDANT INCREASED THE INDEX BY 7, BUT LATER CHANGED THE NUMBER TO 14. THE LOAD MANIFEST REFLECTED THE INDEX CHANGE. UPON TKOF, IMMEDIATELY AFTER ROTATION, THE FO FLYING NOTED THAT THE TRIM WAS SET IMPROPERLY. NO FURTHER ADVERSE CHARACTERISTICS WERE NOTED AFTER THE TRIM WAS RESET. AFTER LNDG AND DURING POSTFLT, I SAW THE CARGO COMPARTMENT LOADED WITH WELL MORE THAN 100 LBS. I CALLED OPS AT LAX (OUR POINT OF DEP) AND LEARNED OF MY ERROR XFERRING THE CARGO LOAD TO THE MANIFEST. I NORMALLY VERIFY THE LOAD SHEET BY TURNING IT OVER AND LOOKING AT THE BAG COUNT. I RECALCULATED THE MANIFEST WITH THE NEW INFO AND FOUND THAT THE ACFT WAS ACTUALLY 700 LBS HEAVIER (WELL WITHIN LIMITS) AND AFT CTR OF GRAVITY BY 2.3 NUMBERS.

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.