The photo clearly shows the Flight/Voice Recorder rack, although in the case of 744F's, it may be boxed in with lightweight panelling. The 744F also has flat ceiling panels.
In the photos, the control cables can also be clearly seen (directly overhead) going through the aft pressure bulkhead. As well as weight and balance anomalies, deformation of the bulkhead may also lead to control issues.
Last edited by NSEU; 27th May 2013 at 07:26.