SFAR

BEFORE YOU DO WORK IN A FUEL TANK 

• Pre entry checklist (AMM)

• Do a check of the electrical bond

• Never assume, don't deviate, consult engineer

PERMISSION FOR TANK ENTRANCE MUST BE ISSUED

• Accountable manager

• Maintenance supervisor

ALL REMOVED TANK COMPONENTS MUST BE REGISTERED IN

• Ground log book (GLB) and Event ground log book (EGLB)

• ALI ( Airworthiness Limitation Inspection) and Ground log book (GLB)

• Event ground log book (EGLB) and ALI ( Airworthiness Limitation Inspection)

REPETITIVE INSPECTION

• ALI ( Airworthiness Limitation Inspection)

  BOEING

• ALI ( Maintenance/Inspection) 

  AIRBUS 

CDCCL

• Pre entry checklist

• Do a check of the electrical bond

• Never assume, don't deviate, consult engineer

NGS SHUT OFF VALVE

• Critical Design Configuration Control Limitations

•  Electrically operated and Pneumatically controlled

•  Electrically controlled and Pneumatically operated

REMOVES OZONE FROM THE ENGINE BLEED AIR BY A CATALYTIC PROCESS THAT CONVERTS OZONE TO OXYGEN

• Nitrogen enriched air (NEA)

• Ozone converter

• Nitrogen generation system

MAKE NITROGEN ENRICHED AIR TO SEND TO THE CENTER TANK

• Nitrogen enriched air (NEA)

• Air Separation Module (ASM)

• Nitrogen generation system (NGS)

MIXES WITH TANK AIR TO DECREASE THE OXYGEN PERCENT TO A LEVEL WHICH WILL NOT SUPPORT COMBUSTION

• Nitrogen enriched air (NEA)

• Air Separation Module (ASM)

• Ozone converter

DURING DESCENT

• high flow mode 

• low flow mode