Federal Aviation

MMEL Policy Letter 75 Revision 1


August 15,1997


All Region Flight Standards Division Managers
All Aircraft Evaluation Group Managers


Manager, Air Transportation Division, AFS-200

Reply to Attn of:

Manager, Technical Programs Branch, AFS-260


Portable Fire Extinguisher








Revision 1 reformats policy letter 75 with no change to policy.  Hand fire extinguisher requirements for crew, passenger, cargo, and galley compartments are specified by Federal Aviation Regulations (FAR). The number of required fire extinguishers in the passenger compartment is dependent on the seating capacity of the aircraft. Master Minimum Equipment List (MMEL) relief for inoperative or missing fire extinguishers can therefore only be applied for units that are carried in excess of the regulatory requirement. Further, fire extinguishers that are in excess of the regulatory requirement that are inoperative must be tagged inoperative and removed from the installed location and placed out of sight so it can not be mistaken for a functional unit.  Since the MMEL relief is for units in excess of the FAR, a category D repair interval is specified.



To ensure that the requirements set forth in the FAR are met, the FOPB has determined that the number of fire extinguishers required by regulation must be installed and fully functional. Fire extinguishers in excess of the number required may be granted relief.



The following standard MMEL proviso and repair category is adopted to provide standardization among all MMELs.



Insert ATA ## and Title here

Repair Interval

Number Installed

Number Required for Dispatch

Remarks or Exceptions






XX-X Portable Fire




Any in excess of those required by FAR may be inoperative, or missing provided:

a)                          Inoperative fire extinguisher is tagged inoperative, removed from the installed location, and placed out of sight so it can not be mistaken for a functional unit, and

b)                          Required distribution is maintained.



Each Flight Operations Evaluation Board (FOEB) Chairman should apply this Policy to affected MMELs through the normal FOEB process.











Air Transportation Division, AFS-200




PL-75 reformatted 12/01/2010 with no change in policy