Narrative:

This happened to be the first leg of the day, and I was (am) the first officer and PF. All preparations, including my preflight, were normal. Our center of gravity was computed to be near its aft limit. On the takeoff roll, the airplane's nose lifted nearly by itself at vr, indicating a very aft center of gravity. The remainder of climb and cruise were normal. On approach, although VMC, I was still using the autoplt for ILS capture. The airplane began oscillating in pitch in attempt to follow the GS, another aft center of gravity indication. The landing and rollout were normal with the exception of not much control force necessary for flare. At the gate, the captain and I were on flight deck as passenger and cargo were unloaded. When all were off and I deplaned, a ramper inquired as to how the airplane felt. I told him the center of gravity seemed aft, and he said he wasn't surprised as he had unloaded quite a number of items that were extremely heavy and in excess of the standard 25 pounds allotted. Air carrier, at some codeshare partner stations, doesn't use its own personnel but that of the codeshare partner. Accustomed to bigger jets, they could perhaps be more sensitive to the implications of an aft cargo bay. Also, though only possible to a limited degree, an awareness more on my part maybe might have seen the particular cargo if I was outside when loaded.

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Original NASA ASRS Text

Title: AN EMBRAER 120 WAS DISPATCHED WITH THE CTR OF GRAVITY AT ITS EXTREME AFT LIMIT AFFECTING FLT CHARACTERISTICS.

Narrative: THIS HAPPENED TO BE THE FIRST LEG OF THE DAY, AND I WAS (AM) THE FO AND PF. ALL PREPARATIONS, INCLUDING MY PREFLT, WERE NORMAL. OUR CTR OF GRAVITY WAS COMPUTED TO BE NEAR ITS AFT LIMIT. ON THE TKOF ROLL, THE AIRPLANE'S NOSE LIFTED NEARLY BY ITSELF AT VR, INDICATING A VERY AFT CTR OF GRAVITY. THE REMAINDER OF CLB AND CRUISE WERE NORMAL. ON APCH, ALTHOUGH VMC, I WAS STILL USING THE AUTOPLT FOR ILS CAPTURE. THE AIRPLANE BEGAN OSCILLATING IN PITCH IN ATTEMPT TO FOLLOW THE GS, ANOTHER AFT CTR OF GRAVITY INDICATION. THE LNDG AND ROLLOUT WERE NORMAL WITH THE EXCEPTION OF NOT MUCH CTL FORCE NECESSARY FOR FLARE. AT THE GATE, THE CAPT AND I WERE ON FLT DECK AS PAX AND CARGO WERE UNLOADED. WHEN ALL WERE OFF AND I DEPLANED, A RAMPER INQUIRED AS TO HOW THE AIRPLANE FELT. I TOLD HIM THE CTR OF GRAVITY SEEMED AFT, AND HE SAID HE WASN'T SURPRISED AS HE HAD UNLOADED QUITE A NUMBER OF ITEMS THAT WERE EXTREMELY HVY AND IN EXCESS OF THE STANDARD 25 LBS ALLOTTED. ACR, AT SOME CODESHARE PARTNER STATIONS, DOESN'T USE ITS OWN PERSONNEL BUT THAT OF THE CODESHARE PARTNER. ACCUSTOMED TO BIGGER JETS, THEY COULD PERHAPS BE MORE SENSITIVE TO THE IMPLICATIONS OF AN AFT CARGO BAY. ALSO, THOUGH ONLY POSSIBLE TO A LIMITED DEGREE, AN AWARENESS MORE ON MY PART MAYBE MIGHT HAVE SEEN THE PARTICULAR CARGO IF I WAS OUTSIDE WHEN LOADED.

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.