A flap assembly comprising: a track having an elongate structure, wherein the track is configured to couple to an aircraft wing; and a flap carriage configured to move along a length of the track; wherein: the flap carriage includes a primary roller and a pair of secondary rollers (604A, 604B) configured to secure the flap carriage to the track; a top portion of the flap carriage is configured to couple to a flap (104A-104C) such that movement of the flap carriage along the length of the track enables movement of the flap (104A-104C) relative to the aircraft wing; the flap carriage includes an inverted U-channel formed by the top portion and side portions (610A, 610C) of the flap carriage; the primary roller and the pair of secondary rollers (604A, 604B) are positioned inside the inverted U-channel; the side portions (610A, 610C) of the flap carriage include a first side portion having a first end and a second end and a second side portion having a first end and a second end; the first end of the first side portion and the first end of the second side portion are coupled to the top portion of the flap carriage; a pin positions the primary roller inside the inverted U-channel, the pin extending through the first side portion proximate the second end of the first side portion and through the second side portion proximate the second end of the second side portion; and the position of the pin (606, 608A, 608B) of the primary roller enables the primary roller to couple to a bottom surface of the track (208, 402). a track having an elongate structure, wherein the track is configured to couple to an aircraft wing; and a flap carriage configured to move along a length of the track; wherein: the flap carriage includes a primary roller and a pair of secondary rollers (604A, 604B) configured to secure the flap carriage to the track; a top portion of the flap carriage is configured to couple to a flap (104A-104C) such that movement of the flap carriage along the length of the track enables movement of the flap (104A-104C) relative to the aircraft wing; the flap carriage includes an inverted U-channel formed by the top portion and side portions (610A, 610C) of the flap carriage; the primary roller and the pair of secondary rollers (604A, 604B) are positioned inside the inverted U-channel; the side portions (610A, 610C) of the flap carriage include a first side portion having a first end and a second end and a second side portion having a first end and a second end; the first end of the first side portion and the first end of the second side portion are coupled to the top portion of the flap carriage; a pin positions the primary roller inside the inverted U-channel, the pin extending through the first side portion proximate the second end of the first side portion and through the second side portion proximate the second end of the second side portion; and the position of the pin (606, 608A, 608B) of the primary roller enables the primary roller to couple to a bottom surface of the track (208, 402). the flap carriage includes a primary roller and a pair of secondary rollers (604A, 604B) configured to secure the flap carriage to the track; a top portion of the flap carriage is configured to couple to a flap (104A-104C) such that movement of the flap carriage along the length of the track enables movement of the flap (104A-104C) relative to the aircraft wing; the flap carriage includes an inverted U-channel formed by the top portion and side portions (610A, 610C) of the flap carriage; the primary roller and the pair of secondary rollers (604A, 604B) are positioned inside the inverted U-channel; the side portions (610A, 610C) of the flap carriage include a first side portion having a first end and a second end and a second side portion having a first end and a second end; the first end of the first side portion and the first end of the second side portion are coupled to the top portion of the flap carriage; a pin positions the primary roller inside the inverted U-channel, the pin extending through the first side portion proximate the second end of the first side portion and through the second side portion proximate the second end of the second side portion; and the position of the pin (606, 608A, 608B) of the primary roller enables the primary roller to couple to a bottom surface of the track (208, 402).