Click on images for a larger view. The access holes have been opened up and the old bladder has been removed and is on the floor under the wing. The bladder shape can be seen by looking at the new bladder, which is the one to the right on the floor. The wing construction of the Bonanza wing. The fuel bladder is installed forward of the wing spar in the area formed by the leading edge wing skins and formers.
Access is through removal panels in the top of the wing skin.