MIL-DTL-62267B(AT)
4.2.2.4 Maintainability verification. To determine conformance to 3.3.2, it shall be
determined, during test, that point estimates of maintenance ratios are not exceeded.
4.3 Conformance inspection. Conformance inspection shall include the examinations of
4.4 (see table II) and the tests of 4.5.4.1, 4.5.4.2 and 4.5.4.3 (see table IV). Sampling shall be in
accordance with 4.5.3.
TABLE III. Classification of defects.
Method of
Category
Defect
examination
Major:
101
Materials - Not as specified herein and in drawings (see 3.2).
Visual
102
Fabrication - not in accordance with specified drawings,
Visual & SIE 3/
standards and specifications (see 3.3).
103
Reliability - MTBF less than specified (see 3.3.1).
Visual
104
Maintainability - Maintenance ratios exceed specified
Visual
maximums (see 3.3.2).
105
Operational profile - profile used to determine MTBF not
Visual
as specified (see 3.3.3).
106
Stowed equipment - insufficient stowage space (see 3.5).
Visual
107
Electrical system - voltage not as specified (see 3.6).
Visual & SIE
108
Power plant electrical - voltage not as specified (see 3.6.1).
SIE
109
Engine manifold heater - wiring not as specified (see 3.6.4).
Visual
110
Communications system power supply - power not supplied
Visual
from hull electrical system (see 3.6.5).
111
Hydraulic system - leakage exceeding a seep (see 3.7.1).
Visual
112
Fuel system - leakage (see 3.7.2). 1/
Visual
113
Fuel tanks - insufficient filling capacity (see 3.7.3).
SIE
114
Operator's protection - noise hazards not posted (see 3.8).
Visual
115
Painting - Not as specified (see 3.9.1).
Visual
116
Workmanship - Insufficient (see 3.10).
Visual
Minor:
201
Interior lighting - domelight or red filter not provided,
Visual
intensity not adjustable (see 3.6.2). 2/
202
Auxiliary outlet - not provided, not protected (see 3.6.3).
Visual
203
Marking - Not as specified (see 3.9.2).
Visual
204
Identification and data plates - Not in accordance with
Visual
drawings (see 3.9.3).
1/ Fuel leaks constitute a special defect and will result in total inspection of the lot for this
defect.
2/ Filament failures are not to be classified as major or minor defects.
3/ SIE = Standard Inspection Equipment.
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