FUSELAGE - MAINTENANCE PRACTICES
1. General
A. This procedure has this task:
(1) Airworthiness Limitation Precautions.
TASK 53-00-00-912-801
2. Airworthiness Limitation Precautions
A. General
(1) Critical Design Configuration Control Limitations (CDCCLs)
(a) All occurrences of CDCCLs found in this chapter of the AMM are identified by this note
after each applicable CDCCL design feature:
1) NOTE: CDCCL - Refer to the task: Airworthiness Limitation Precautions,
TASK 53-00-00-912-801, for important information on Critical Design Configuration
Control Limitations (CDCCLs).
(b) Design features that are CDCCLs are defined and controlled by Special Federal Aviation
Regulation (SFAR) 88, and can be found in Section 9 of the Maintenance Planning Data
(MPD) document. CDCCLs are a means of identifying certain design configuration
features intended to preclude a fuel tank ignition source for the operational life of the
airplane. CDCCLs are mandatory and cannot be changed or deleted without the approval
of the FAA Oversight Office that is responsible for the airplane model Type Certificate. A
critical fuel tank ignition source prevention feature may exist in the fuel system and its
related installation or in systems that, if a failure condition were to develop, could interact
with the fuel system in such a way that an unsafe condition would develop without this
limitation. Strict adherence to configuration, methods, techniques, and practices as
prescribed is required to ensure the CDCCL is complied with. Any use of parts, methods,
techniques or practices not contained in the applicable CDCCL must be approved by the
FAA Oversight Office that is responsible for the airplane model Type Certificate.
(2) Airworthiness Limitation Instructions (ALIs)
(a) All occurrences of fuel tank system ALIs found in this chapter of the AMM are identified
by this note after each applicable ALI inspection feature:
1) NOTE: ALI - Refer to the task: Airworthiness Limitation Precautions,
TASK 53-00-00-912-801, for important information on airworthiness limitation
instructions (ALIs).
(b) Inspection features that are ALIs are defined and controlled by Special Federal Aviation
Regulation (SFAR) 88, and can be found in Section 9 of the Maintenance Planning Data
(MPD) document. These ALIs identify inspection features related to fuel tank ignition
source prevention which must be done to maintain the design level of safety for the
operational life of the airplane. These inspection features are mandatory and cannot be
changed or deleted without the approval of the FAA Oversight Office that is responsible
for the airplane model Type Certificate. Strict adherence to methods, techniques and
practices as prescribed is required to ensure the ALI is complied with. Any use of
methods, techniques or practices not contained in these ALIs must be approved by the
FAA Oversight Office that is responsible for the airplane model Type Certificate.
B. Location Zones
Zone Area
100 Lower Half of Fuselage
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-00-00
Page 201
D633A101-ILF Oct 15/2015
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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