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767-300
STRUCTURAL REPAIR MANUAL
GENERAL一STRUCTURAL REPAIR DEFINITIONS
1. Applicability
A. This subject gives the definitions related to repair classification and inspection for damage-tolerant
and non-damage tolerant primary or secondary structures as applicable.
2. References
Reference
Title
51一10-02, GENERAL
SOPM 20-20-01
SOPM 20-20-02
Inspection and Removal of Damage
Magnetic Particle Inspection
Penetrant Methods of Inspection
3. General
A. The SRM is being updated incrementally to account for damage tolerance analysis improvements,
testing, experience, Non-Destructive Inspection (NDI) technology improvements etc. As part of the
update, new terminology will be introduced as defined below. When the update is complete, all
repairs to Principal Structural Elements (PSE) will be classified as defined in 2B. During the
transition, both types of terminology will exist.
B.砂更ollowing definitions will be incrementally. introdu恻护r篡竺s to Pr些ipa坚些c竺a听lem即竺
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(1) Category A Repair,: A permanent repair for which the inspections given in the Maintenance
Planning Data (MPD) document, are sufficient and no other actions are necessary.
(2) Category B Repair: A permanent repair for which supplemental inspections are necessary at
the specified threshold and repeat intervals.
(3) Category C Repair: A time-limited repair which must be replaced or reworked within a specified
time limit. Also supplemental inspections can be necessary at a specified threshold and repeat
interval.
C. The following definitions will be used for repairs which are not critical for damage tolerance or have
not yet been updated during the transition period discussed above:
(1) Permanent Repair: A repair where no action is necessary except the operator's normal
maintenance.
(2) Interim Rep业:A repair that has the necessary structural strength and could stay on the
airplane indefinitely. The repair must be inspected as specified intervals and replaced if
deterioration is detected or damage is found.
(3) Time-Limited Repair: A repair that has the necessary structural strength but does not have
sufficient durability. This repair must be replaced after a specified time, usually given as a
number of flight cycles, flight hours or a calendar time
D. The definitions of the terms as they apply to the repairs are as follows:
(1) Damage Tolerance:: The ability of structure to sustain anticipated loads in the presence of
damage, such as fatigue cracks until it is detected through inspection or malfunction and
repaired.
(2) Damage Tolerant Repair: A repair that meets the necessary damage tolerance conditions.
(3) Repeat Intervals:The period in flight cycles, flight hours or calendar time that occurs between
the necessary inspections.
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(1) Category A Repair,: A permanent repair for which the inspections given in the Maintenance
Planning Data (MPD) document, are sufficient and no other actions are necessary.
(2) Category B Repair: A permanent repair for which supplemental inspections are necessary at
the specified threshold and repeat intervals.
(3) Category C Repair: A time-limited repair which must be replaced or reworked within a specified
time limit. Also supplemental inspections can be necessary at a specified threshold and repeat
interval.
C. The following definitions will be used for repairs which are not critical for damage tolerance or have
not yet been updated during the transition period discussed above:
(1) Permanent Repair: A repair where no action is necessary except the operator's normal
maintenance.
(2) Interim Rep业:A repair that has the necessary structural strength and could stay on the
airplane indefinitely. The repair must be inspected as specified intervals and replaced if
deterioration is detected or damage is found.
(3) Time-Limited Repair: A repair that has the necessary structural strength but does not have
sufficient durability. This repair must be replaced after a specified time, usually given as a
number of flight cycles, flight hours or a calendar time
D. The definitions of the terms as they apply to the repairs are as follows:
(1) Damage Tolerance:: The ability of structure to sustain anticipated loads in the presence of
damage, such as fatigue cracks until it is detected through inspection or malfunction and
repaired.
(2) Damage Tolerant Repair: A repair that meets the necessary damage tolerance conditions.
(3) Repeat Intervals:The period in flight cycles, flight hours or calendar time that occurs between
the necessary inspections.
发表于 2011-7-30 22:32:49
