.
To indicate applicable inspections that may also benefit other SSIs.
.
Unusual access requirements such as removal of bushings, equipment, etc.
[9] STRUCTURE DETAILS - Used to identify the structural detail, which is part of the SSI, shown in Block 7, for a given inspection task.
7.0 DOCUMENT USAGE D6-82669 Original
[10] TASK REF(ERENCE) - Used to identify operator inspection job or task card(s) that provides the ΔDTR value entered in Block 18.
NOTE: Task cards listed in this column should be identified as being associated with the SSID to serve as NOTICE that adverse findings must be reviewed to determine if reporting per Section 6.0 is required.
[11] DIREC(TION) - Used to identify the inspection direction shown in Block 7 that is applicable to the inspection task.
[12] CHECK LEVEL - For use by operators that normally relate inspection tasks to check levels such as A, B, C or D.
[13] METHOD - Used to indicate the inspection method to be used. A recommended list of abbreviations can be found in Section 10.4.
[14] % PHASE Ro - Used when an inspection task is related to a phased inspection or age exploration program. For this type of program a fixed percent of the eligible fleet is inspected with a given repeat interval. A different percent of the eligible aircraft is selected at each interval
until all airplanes in an operator's fleet have been inspected once. Operators should note the percentage of their total fleet of phased aircraft are indicated as follows:
a) Normal Maintenance
Ro = (NUMBER OF AIRPLANES IN PHASE) X 100
TOTAL NUMBER OF AIRPLANES IN PROGRAM
b) Supplemental Inspections on Eligible Airplanes
Ro = (NUMBER OF ELIGIBLE AIRPLANES IN PHASE) X 100
TOTAL NUMBER OF ELIGIBLE AIRPLANES IN PROGRAM
[15] FREQUENCY F-FLIGHTS - Used to show the operator's repeat inspection interval in flight cycles of a given inspection task.
NOTE: F is denoted as frequency on the DTR Check Forms).
[16] N = 100F/Ro -This value represents the effective repeat inspection interval in flight cycles for a given inspection method and a single SSI. It is the value that is used to enter the plot in Block 6 to obtain a ΔDTR from the line corresponding to the same inspection direction and method.
Alternatively, N may be determined from the plot in Block 6 if a desired ΔDTR value is to
be obtained.
[17] DAMAGE DETECTION PERIOD No FLIGHTS - The No values are shown for reference purposes only. No should neither be construed as an inspection threshold nor as an inspection interval. An inspection method showing a low No is unlikely to produce the required DTR without the addition of other types of inspection.
[18] ΔDTR - Used to enter the ΔDTR value obtained from Block 6 corresponding to the inspection direction in Block 11, the method in Block 13, and the repeat interval in Block 16.
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本文链接地址：737-300/400/500 补充结构检查文件 SUPPLEMENTAL STRUCTURAL INSPECTION DOCUMENT 1(16)
