If it is in the Flight Manual...
If the flight manual has the performance chart then you are obligated to use it. If you don't and you have a problem then your fall under 91.13, "reckless operation..." It won't matter if 91, 135, 121 or type 23 or 25 a/c. Some Jets even have contaminated runway performance chats that state they are not approved by the FAA but are a suppliment to AFM and the Feds will sit down and tell you "you have to comply with them" even they they are not quote "FAA approved". The Lear 60 comes to mind as an example.
There is no other interpretation the Fed's will allow. Use the performance charts!
DES
If the flight manual has the performance chart then you are obligated to use it. If you don't and you have a problem then your fall under 91.13, "reckless operation..." It won't matter if 91, 135, 121 or type 23 or 25 a/c. Some Jets even have contaminated runway performance chats that state they are not approved by the FAA but are a suppliment to AFM and the Feds will sit down and tell you "you have to comply with them" even they they are not quote "FAA approved". The Lear 60 comes to mind as an example.
There is no other interpretation the Fed's will allow. Use the performance charts!
DES