* * * FOR ALL
TASK 72-22-41-200-805
1 . General.
A.This procedure gives instructions to do an inspection of the booster spool:
•
(01-090 , 72-22-00) (SIN 830AH)
•
(01-090A , 72-22-00) (SIN 830AH) (SB 72-0069)
•
(02-090 , 72-22-00) (SIN 830AH) (SB 72-0156)
•
(01-090B , 72-22-00) (SIN 830AH) (SB 72-0466) Pre-PIP2 configuration
•
(02-090A , 72-22-00) (SIN 830AH) (SB 72-0466) PIP2 configuration.
NOTE:
Carefully examine the dovetails, the locking slots, and the boltholes because they have an effect on part life.
2 . Tools, Equipment, and Materials.
NOTE:
You can use equivalent alternatives for tools, equipment, and consumable materials.
A.Tools and Equipment.
(1)Special Tools. None.
(2)Standard Tools and Equipment. None.
(3)Locally Manufactured Tools. None.
B.Consumable Materials. None.
C.Referenced Procedures.
 
ATA No.
Description
 
70-32-02
Fluorescent Penetrant Inspection
 
70-33-03
Special Inspection For Surface Fretting Or Galling
 
70-42-00
Blending And Removal Of High Metal Procedures
D.Expendable Parts. None.
3 . Specific Inspection Procedure.
NOTE:
Any findings beyond manual limits that can be indicative of a possible crack of metallurgical defect must be reported to GE through a myGEAviation Technical Inquiry.
Subtask 72-22-41-230-003
A.Do a Class G fluorescent penetrant inspection of the booster spool. Use a non-aqueous wet developer. Refer to TASK 70-32-02-230-001 (FLUORESCENT PENETRANT INSPECTION).
4 . Visual Inspection.
Refer to Figure 801.
Subtask 72-22-41-220-013
A.Do an inspection of all areas (does not include boltholes, dovetail slots, dovetail areas, dovetail load and lock slots, flanges, and seal teeth) for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
* * * FOR ALL
Figure 801   Booster Spool - Visual Inspection
* * * FOR ALL
Figure 802   Booster Spool - Post SB 72-0466 Configuration
Subtask 72-22-41-220-014
(2)Nicks, dents, and scratches:
Maximum serviceable limit:
Any amount 0.001 inch (0.03 mm) in depth after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Maximum repairable limit:
Deleted.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-015
(3)Discoloration from shotpeen residue (rust color):
Maximum serviceable limit:
Any amount.
Maximum repairable limit:
Any amount.
Repair method:
Clean. Refer to TASK 70-22-02-110-014 (SPECIAL CLEANING PROCEDURE 2 - TITANIUM CLEANING) .
Subtask 72-22-41-220-016
B.Do an inspection of the dovetail slots for:
(1)Fretting on pressure faces (area Z):
Maximum serviceable limit:
Any amount, if in the limits of TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-017
(2)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-018
(3)Nicks, dents, and scratches on bottom of dovetails (area AB):
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
NOTE:
Area CD, the center of the dovetail slot bottom is part of area AB, however, the repairable limit only applies to area CD. The rest of area AB is not repairable by TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-019
(4)Scratches on all surfaces (does not include area Z and area AB):
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-020
CAUTION:
DO NOT USE EMERY CLOTH. EMERY CLOTH WILL DAMAGE THE SPOOL.
C.Do an inspection of the dovetail areas for:
(1)Wear, nicks, dents, and scratches:
Maximum serviceable limit:
Any amount 0.002 inch (0.05 mm) in depth after the removal of high metal. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) . Tangential direction mandatory.
Maximum repairable limit:
Deleted.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-021
(2)Local deformation on blade platform forward thrust area (stage 2 only):
Maximum serviceable limit:
Any length 0.020 inch (0.51 mm) in depth after the removal of high metal and sharp edges. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-022
(3)Deformation on blade lock slot corners:
Maximum serviceable limit:
Any amount 0.020 inch (0.51 mm) in depth after the removal of high metal to adjacent profile. Refer to TASK 70-42-00-350-002 (BLENDING AND REMOVAL OF HIGH METAL PROCEDURES) .
Repair method:
Replace the booster spool.th
Subtask 72-22-41-220-023
(4)Fretting on blade platform thrusts:
Maximum serviceable limit:
Any amount, if in the limits of TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-024
D.Do an inspection of the seal teeth for:
(1)Cracked or missing material:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-025
(2)Rub marks, nicks, dents, and scratches at the seal teeth diameter (tips):
Maximum serviceable limit:
Not serviceable.
Maximum repairable limit:
Deleted.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-026
(3)Bent seal teeth:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-027
(4)Waviness:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-028
(5)Discoloration:
Maximum serviceable limit:
Any amount.
Maximum repairable limit:
Any amount.
Repair method:
Clean. Refer to TASK 70-22-02-110-014 (SPECIAL CLEANING PROCEDURE 2 - TITANIUM CLEANING) .
Subtask 72-22-41-220-029
(6)Wear on the outer diameter:
Maximum serviceable limit:
Any amount in the dimensional limits of Subtask 72-22-41-220-041 (paragraph 6.B.) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-061
(7)Rub marks, nicks, dents, and scratches at sides of seal teeth:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-030
E.Do an inspection of the boltholes for:
(1)Cracks:
Maximum serviceable limit:
Not serviceable.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-031
(2)Nicks and scratches in the bore:
Maximum serviceable limit:
Any amount 0.001 inch (0.02 mm) in depth.
Maximum repairable limit:
Any amount.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-032
F.Do an inspection of the spacer flange for:
(1)Contact marks:
Maximum serviceable limit:
Any amount 0.002 inch (0.05 mm) in depth.
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-033
(2)Fretting on the mating surface for the flowpath spacer:
Maximum serviceable limit:
Any amount, if in the limits of TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-062
(3)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-034
G.Do an inspection of the forward flange for:
(1)Fretting:
Maximum serviceable limit:
Any amount, if in the limits of TASK 70-33-03-220-006 (SPECIAL INSPECTION FOR SURFACE FRETTING OR GALLING) and in the dimensional limits of Subtask 72-22-41-220-041 (paragraph 6.B.) .
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-063
(2)Nicks, dents, and scratches:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-064
(3)Nicks, dents, and scratches at rabbet area:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-802 (72-22-41, REPAIR 002).
Subtask 72-22-41-220-035
H.Do an inspection of each self-locking shank nut (nut) for:
(1)Loss of self-locking quality (0.250-28UNJF):
Maximum serviceable limit:
Not serviceable, if run-on torque is less than 7.0 lb in. (0.79 N.m).
Repair method:
Repair. Refer to TASK 72-22-41-300-801 (72-22-41, REPAIR 001).
Subtask 72-22-41-220-036
(2)Damaged threads:
Maximum serviceable limit:
One full thread, total (cumulative) or continuous, can be missing after the removal of damage, if no less than 50 percent of the lead-in thread remains.
Repair method:
Repair. Refer to TASK 72-22-41-300-801 (72-22-41, REPAIR 001).
Subtask 72-22-41-220-037
(3)Looseness:
Maximum serviceable limit:
0.008 inch (0.20 mm).
Repair method:
Repair. Refer to TASK 72-22-41-300-801 (72-22-41, REPAIR 001).
Subtask 72-22-41-220-038
(4)Cracks in the shank:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-801 (72-22-41, REPAIR 001).
Subtask 72-22-41-220-039
(5)Missing nuts:
Maximum serviceable limit:
Not serviceable.
Repair method:
Repair. Refer to TASK 72-22-41-300-801 (72-22-41, REPAIR 001).
5 . Special Dimensional Inspection.
Refer to Figure 803.
Subtask 72-22-41-220-040
NOTE:
Do this special inspection only if a visual inspection or other defect condition makes a dimensional inspection necessary.
NOTE:
The dimensional data identified within this procedure was designed using millimeters as the base unit of measurement for dimensional values. The conversion to inches is rounded to one additional decimal digit than millimeters. For minimum dimensions, converted values are rounded up. For maximum dimensions, converted values are rounded down. To avoid conversion errors, do not reconvert from inches to millimeters.
A.Measure each diameter at eight equally-spaced locations. Calculate the average diameter dimension. Compare the average diameter to the dimensions given in the dimensional inspection.
* * * FOR ALL
Figure 803   Booster Spool - Dimensional Inspection
Subtask 72-22-41-220-041
B.Do an inspection of the booster spool for:
(1)Diameter G:
Minimum serviceable limit:
39.939 inches (1014.45 mm).
Maximum serviceable limit:
39.943 inches (1014.55 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-042
(2)Runout of diameter G in relation to diameter B and surface A:
Maximum serviceable limit:
0.004 inch (0.10 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-043
(3)Diameter D:
Minimum serviceable limit:
29.683 inches (753.95 mm).
Maximum serviceable limit:
29.690 inches (754.13 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-044
(4)Runout of diameter D in relation to diameter B and surface A:
Maximum serviceable limit:
0.004 inch (0.10 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-045
C.Do an inspection of the boltholes on the forward flange for:
(1)Diameter C:
Minimum serviceable limit:
0.6354 inch (16.139 mm).
Maximum serviceable limit:
0.6364 inch (16.164 mm). Maximum seven holes can exceed the specified limit 0.6364 inch (16.164 mm) as follows:
•
Maximum five holes by 0.0004 inch (0.011 mm)
•
Maximum two holes by 0.0024 inch (0.063 mm)
•
In any group of five consecutive holes, no more than three can be larger than 0.6364 inch (16.164 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-046
D.Do an inspection of the diameters of the interstage seal serrations for:
(1)Diameter E:
Minimum serviceable limit:
44.214 inches (1123.04 mm).
Maximum serviceable limit:
44.226 inches (1123.34 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-047
(2)Diameter F:
Minimum serviceable limit:
45.002 inches (1143.05 mm).
Maximum serviceable limit:
45.014 inches (1143.35 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-048
(3)Diameter J:
Minimum serviceable limit:
47.114 inches (1196.70 mm).
Maximum serviceable limit:
47.126 inches (1197.00 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-049
(4)Diameter L:
Minimum serviceable limit:
47.254 inches (1200.25 mm).
Maximum serviceable limit:
47.266 inches (1200.55 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-050
(5)Diameter M:
Minimum serviceable limit:
47.374 inches (1203.30 mm).
Maximum serviceable limit:
47.386 inches (1203.60 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-051
(6)Diameter N:
Minimum serviceable limit:
47.334 inches (1202.29 mm).
Maximum serviceable limit:
47.346 inches (1202.59 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-052
(7)Diameter W:
Minimum serviceable limit:
46.135 inches (1171.83 mm).
Maximum serviceable limit:
46.147 inches (1172.13 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-053
* * * PRE SB   72-0069
* * * PRE SB   72-0156
(8)Diameter X:
Minimum serviceable limit:
45.534 inches (1156.57 mm).
Maximum serviceable limit:
45.546 inches (1156.87 mm).
Repair method:
Replace the booster spool.
* * * END PRE SB   72-0069
* * * END PRE SB   72-0156
Subtask 72-22-41-220-059
* * * SB   72-0069
* * * SB   72-0156
* * * SB   72-0466
(8).A.Diameter X:
Minimum serviceable limit:
45.484 inches (1155.30 mm).
Maximum serviceable limit:
45.496 inches (1155.60 mm).
Repair method:
Replace the booster spool.
* * * END SB   72-0069
* * * END SB   72-0156
* * * END SB   72-0466
Subtask 72-22-41-220-054
* * * PRE SB   72-0069
* * * PRE SB   72-0156
(9)Diameter Y:
Minimum serviceable limit:
42.426 inches (1077.62 mm).
Maximum serviceable limit:
42.434 inches (1077.82 mm).
Repair method:
Replace the booster spool.
* * * END PRE SB   72-0069
* * * END PRE SB   72-0156
Subtask 72-22-41-220-060
* * * SB   72-0069
* * * SB   72-0156
* * * SB   72-0466
(9).A.Diameter Y:
Minimum serviceable limit:
42.366 inches (1076.10 mm).
Maximum serviceable limit:
42.374 inches (1076.30 mm).
Repair method:
Replace the booster spool.
* * * END SB   72-0069
* * * END SB   72-0156
* * * END SB   72-0466
Subtask 72-22-41-220-055
E.Do an inspection of the flange thickness for:
(1)Dimension P:
Minimum serviceable limit:
0.496 inch (12.60 mm).
Maximum serviceable limit:
0.504 inch (12.80 mm).
Repair method:
Replace the booster spool.
Subtask 72-22-41-220-056
(2)Dimension R:
Minimum serviceable limit:
0.166 inch (4.22 mm).
Maximum serviceable limit:
0.174 inch (4.42 mm).
Repair method:
Replace the booster spool.