Narrative:

After landing on rollout; airplane began a swerve to the left. [Aircraft] departed runway. No damage. I may have induced it; when I raised the flaps during rollout; as I usually do. I don't know. The winds were light; but with a tail dragger; it doesn't take much. Also; the auxiliary fuel tank; in the fuselage; behind the rear seat; was full. Although within C.G. Limit; the extra weight; back there; may have been a factor in exaggerating the swerve.

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Original NASA ASRS Text

Title: Bellanca pilot reports runway excursion after landing in light winds. A full auxiliary fuel tank and raising the flaps during landing roll were cited as possible causal factors.

Narrative: After landing on rollout; airplane began a swerve to the left. [Aircraft] departed runway. No damage. I may have induced it; when I raised the flaps during rollout; as I usually do. I don't know. The winds were light; but with a tail dragger; it doesn't take much. Also; the auxiliary fuel tank; in the fuselage; behind the rear seat; was full. Although within C.G. limit; the extra weight; back there; may have been a factor in exaggerating the swerve.

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.