GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] GE90-100 SERVICE BULLETIN - 72-0320 R01 Revised: 05/11/2010 SB 72-0320 R01 ENGINE - HIGH PRESSURE COMPRESSOR ROTOR ASSEMBLY (72-31-00) - INSPECTION OF HPC STAGES 2-5 SPOOL SEAL TEETH Issued: 06/12/2009

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The information contained in this publication is GE proprietary information and is disclosed in confidence. It is the property of GE and shall not be used, disclosed to others or reproduced without the express written consent of GE, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modifications, spare parts, designs, or configuration changes or to obtain FAA or any other government or regulatory approval to do so. If consent is given for reproduction in whole or in part, this notice and the notice set forth on this media shall appear in any such reproduction in whole or in part. This technical data is considered ITAR and/or EAR controlled pursuant to 22 CFR Part 120- 130 and 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-U.S. Person, whether in the United States or abroad, without the proper U.S. Government authorization (e.g., License, exemption, NLR, etc.), is strictly prohibited. All technical documentation and information contained herein, with respect to assembly and disassembly, cleaning, inspection methods and limits, repair methods and limits, operational limits, life limits and the like, have been developed and approved for use with engines and parts that have been manufactured and/or approved by GE and that have been maintained in accordance with GE technical documentation and recommendations. GE has no contractual or legal obligation for, nor knowledge of, non-GE-approved parts and repairs. Accordingly, this documentation is not intended to apply to non-GE-approved parts and repairs.
Copyright (2010) General Electric Company, U.S.A.

TRANSMITTAL INFORMATION REVISION 1 TO SERVICE BULLETIN 72-0320 Revision 1 is issued to update paragraphs 1., PLANNING INFORMATION and 3., ACCOMPLISHMENT INSTRUCTIONS

. The original was issued June 12, 2009. Revision bars in the left margin identify changes. 1. PLANNING INFORMATION A. Effectivity * * * GE90-110B1 and -115B This Service Bulletin is applicable to all GE90-100 engines. The spools stages 2-5 [high pressure compressor (HPC) stages 2-5 spools] P/N 351-103-106-0 , P/N 351-103-107-0 , P/N 351-103-108-0 , P/N 351-103-109-0 , P/N 351-103- 141-0 , P/N 351-103-142-0 , P/N 351-103-143-0 , and P/N 351-103-144-0 are affected by this Service Bulletin.GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] B. Description This Service Bulletin provides procedures to do eddy current inspection (ECI) or spot fluorescent penetrant inspection (Spot FPI) of the stages 1-2 rotating seal of the HPC stages 2-5 spool. C. Compliance Category 3 GE recommends that you do this Service Bulletin at the next shop visit of the engine, excluding low pressure turbine (LPT) stage 6 (GE90-100 S/B 72-0226) and outlet guide vane (OGV) leaf seal quick turn replacement (GE90-100 S/B 72-0338). NOTE: This Service Bulletin can be accomplished in two ways: A. With the HPC upper half case and/or HPC lower half case removed. B. With HPC rotor assembled, or bladed HPC stages 2-5 spool, or at piece part level. This Service Bulletin is offered to improve the reliability or performance of your GE product, or to help prevent the occurrence of the event or condition described in this Service Bulletin. If the operator elects not to participate in the bulletin, that decision will be taken into consideration by GE in evaluating future product performance issues that may arise in the operator’s fleet. D. Concurrent Requirements None. E. Reason (1) Objective: Inspect HPC stages 2-5 spool for potential cracking at stages 1-2 seal teeth. (2) Condition: An engine in service has experienced a crack in the stages 1-2 seal teeth. (3) Cause: Crack initiated at the tip of the forward seal tooth of stages 1-2 rotating seal. (4) Inspection: Inspect stages 1-2 seal teeth for evidence of cracking. (5) Substantiation: The inspection techniques described in this Service Bulletin have been demonstrated to be effective in other revenue service engines. F. Approval This Service Bulletin has been reviewed by the appropriate governmental authority and the repair(s) and modification(s) herein comply with the applicable Aviation Regulations and are APPROVED for installation in the model(s) listed in this Service Bulletin. G. Manpower After you get access to the HPC stages 2-5 spool, you will need approximately 2 man-hours to do the inspection portion of this Service Bulletin. H. Weight and Balance Weight and balance are not changed.GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] I. References (Use the latest version of these documents) GEK 9250, Commercial Engine Standard Practices Manual (SPM) GEK 109993, GE90-100 Engine Manual (EM) GEK 110005, GE90-100 Illustrated Parts Catalog (IPC) GE90-100 S/B 72-0226 , ENGINE - Low Pressure Turbine Rotor/Stator Assembly (72-56-00) - Stage 6 LPT Blade Replacement GE90-100 S/B 72-0338 , ENGINE - Stage 9 OGV (72-41-03) - Repair of Engines with Missing Stage 9 OGV Leaf Seals National Aerospace Standard 410 (NAS-410) J. Publications Affected None. K. Interchangeability Not applicable. L. Software Accomplishment Summary Not applicable. 2. MATERIAL INFORMATION A. Material - Price and Availability (1) Parts necessary to do this Service Bulletin: None. (2) Other Spare Parts: None. (3) Consumables:
Code Number Description C04-003 Solvent, General (acetone) C04-035 Solvent, General (isopropyl alcohol) C05-003 Marking Pen C10-040 Tape, Teflon
B. Industry Support Information None. C. Configuration Chart Not applicable. D. Parts DispositionGE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] HPC stages 2-5 spools found unserviceable per paragraph 3., ACCOMPLISHMENT INSTRUCTIONS , must be removed and replaced. Refer to the appropriate GE90-100 EM instructions. After removal, return unserviceable HPC stages 2-5 spools to GE. Please contact your local GE representative for shipping details. E. Tooling - Price and Availability
Tool Number Description 9C1578G01 Eddy Current Inspection Kit (inspection kit) ELOTEST B1 SDM/U Eddy Current Test Instrument Nortec NDT 19 Eddy Current Flaw Detector Nortec NDT 19E2 Eddy Current Flaw Detector Nortec NDT 1000 Eddy Current Flaw Detector

To order the inspection kit, please contact: Customer Support Center Phone: (331) 6414-8866 Fax: (331) 6479-8555 E-mail: snecma.csc@snecma.fr
3. ACCOMPLISHMENT INSTRUCTIONS A. General (1) This procedure starts when the HPC stages 2-5 spool is exposed and after any of the following conditions is met: (a) Removal of the HPC upper half case and/or HPC lower half case. Refer to the GE90-100 EM, 72-00-00, SPECIAL PROCEDURES 002, TASK 72-00-00-800-802. (b) At HPC rotor exposure during standard HPC overhaul. Refer to the GE90-100 EM, 72- 30-00, DISASSEMBLY 001. B. ECI of the HPC Stages 2-5 Spool Seal Teeth (1) Prepare ECI of the HPC stages 2-5 spool seal teeth (Figure 1), as follows: (a) Personnel requirements: 1 Personnel who do these inspections must be certified by National Aerospace Standard (NAS) 410/EN4179, Level 2 minimum or an equivalent document accepted by the local regulatory agencies. 2 It is recommended that personnel who do these inspections receive complete instruction on the use of this procedure. They must show they are able to do the calibration, inspection, and analysis before accept/reject authority is given. 3 The following instructions do not certify a person as an inspector by NAS 410/EN4179, Level 2 minimum or any local agency.GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM]

4 Changes in the procedures or the equipment will change the inspection sensitivity. When you want to do or use something different, the procedure and the equipment must be examined and approved by GE Aircraft Engines. Please contact your local GE representative. WARNING: USE PROTECTIVE GLOVES TO PREVENT INJURY FROM SHARP EDGES AND ROUGH SURFACES. CAUTION: USE ONLY APPROVED MARKING MATERIALS ON THE HPC STAGES 2-5 SPOOL. THE HPC STAGES 2-5 SPOOL IS A TITANIUM PART. TITANIUM REACTS TO CHLORINATE AND HALOGEN PRODUCTS. IF YOU DO NOT USE APPROVED MARKING MATERIALS, DAMAGE CAN OCCUR. CAUTION: YOU CAN DAMAGE THE SEAL TEETH VERY EASILY.

(b) Prepare the HPC stages 2-5 spool for the ECI, as follows: 1 Do a visual inspection of the HPC stages 2-5 spool seal teeth. Make a mark with an approved marking pen (C05-003) or equivalent on the part at the location of all blends, nicks, or other anomalies which can cause an indication during the visual inspection. Refer to the SPM, 70-16-02, TEMPORARY MARKING. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, do not turn the HPC rotor while you inspect the HPC stages 2-5 spool seal teeth. Turn the HPC rotor first and then inspect exposed area of the HPC stages 2-5 spool. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, handle the blades of HPC stage 1 blisk to manually turn the HPC rotor clockwise aft looking forward (ALF). 2 Put a mark to locate the inspected area on the HPC stages 2-5 spool seal tooth with an approved marking pen (C05-003) or equivalent. Refer to the SPM, 70-16-02, TEMPORARY MARKING. 3 Repeat steps 3.B.(1)(b) 1 and 2 to perform a 360 degrees inspection of the HPC stages 2-5 spool. NOTE: After the visual inspection, turn the HPC rotor clockwise ALF and visually check that the entire circumference of seal tooth has been inspected. (c) Calibrate the ECI instrument to the initial settings, as follows: 1 Allow the ECI instrument to warm up. Refer to the manufacturer's instructions. 2 Set one of the approved ECI instruments types shown below to the initial settings, as follows: Instrument Type Settings ELOTEST B1 SDM/U (version 3) OR ELOTEST B1 SDM/U with Probe Adapter: Rohmann Frequency: 500 kHz BW: HF Gain: 16V and 16H dB Y-Spread: 0 dB (version 4) X-Spread: 0 dBGE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] P/N: B1 NOB 8H with PreAmp: 0 dB or more Filter: 100 Hz LP HP: Off Phase: Approx. 195 degrees
Instrument Type Settings Nortec NDT 19 OR Nortec NDT 19E2 Frequency: 500 kHz H Gain: 47.650 dB V Gain: 47.650 dB Probe Drive: Hi (2.0) Phase/Angle: Approx. 245 degrees P.H.: 128 P.V.: 128 Alarm: Box
Instrument Type Settings Nortec NDT 1000 with Probe Adapter: Nortec N1000PA8B Frequency: 500 kHz H Gain: 45.0 dB V Gain: 45.0 dB Angle: 57 degrees V-Pos: 50.0 percent H-Pos: 50.0 percent HP Filter: Off LP Filter: 100 Hz HGPSSP: 4-Pole Sweep: Off Sweep Eras: OnGE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Probe Drive: High Horn: Off DT/BX: Box DSTERS: Off Capture: 10.0 s PRSIST: 4 s Graticule: On Alarm Dwel: 0.0 Alarm: Box Box 1: Positive Bottom: 80 percent Top: 98.5 percent Right: 50.5 percent Left: 0.5 percent Box 2: Off Bottom: 25.0 percent Top: 75.0 percent Right: 75.0 percent Left: 25.0 percent Box 3: Off Bottom: 25.0 percent Top: 75.0 percent Right: 75.0 percent Left: 25.0 percent
3 Apply Teflon tape (C10-040) to the probe of the inspection kit 9C1578G01. 4 Put the probe on the calibration standard edge, away from the electrical discharge machining (EDM) notches, and null the probe (Figure 3). 5 Adjust the phase to reach a horizontal lift-off line from the left to the middle of the screen (Figure 4). 6 Scan across the EDM notch and adjust the instrument gain and phase to have a peak response of the 0.06 inch (1.5 mm) EDM notch with an amplitude equal to "4" horizontal major screen divisions (Figure 5). 7 Make a record of the initial calibration data. Refer to the HPC Stages 2-5 Spool Calibration And Inspection Record Form (Figure 9).GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM]

8 Increase the vertical gain by +6 dB. 9 Rotate the phase 15 degrees clockwise (CW) for phase adjustment (Figure 6). 10 Adjust phase and amplitude to "3" vertical major screen divisions with respect of horizontal amplitude (Figure 7). 11 Make a record of the final calibration data. Refer to the HPC Stages 2-5 Spool Calibration And Inspection Record Form (Figure 9). (2) Do an ECI on the stages 1-2 seal teeth of the HPC stages 2-5 spool, as follows: WARNING: USE PROTECTIVE GLOVES TO PREVENT INJURY FROM SHARP EDGES AND ROUGH SURFACES. CAUTION: YOU CAN DAMAGE THE SEAL TEETH VERY EASILY. (a) Do an ECI on the forward seal tooth (Figure 2), as follows: 1 Put the probe of the inspection kit 9C1578G01 on the forward seal tooth. 2 Null the probe and adjust the phase to align the horizontal lift-off signature with the master signal (Figure 6). NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, handle the blades of HPC stage 1 blisk to manually turn clockwise the HPC rotor. 3 Scan 360 degrees around the seal tooth. NOTE: The scans do not have to be continuous for 360 degrees. You can divide the HPC stages 2-5 spool into sections and do an ECI of each section. Make sure that you overlap all the scans. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, do not turn the HPC rotor while you inspect the HPC stages 2-5 spool seal teeth. Turn the HPC rotor first and then inspect exposed area of the HPC stages 2-5 spool. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, handle the blades of HPC stage 1 blisk to manually turn clockwise the HPC rotor. CAUTION: USE ONLY APPROVED MARKING MATERIALS ON THE HPC STAGES 2-5 SPOOL. THE HPC STAGES 2-5 SPOOL IS A TITANIUM PART. TITANIUM REACTS TO CHLORINATE AND HALOGEN PRODUCTS. IF YOU DO NOT USE APPROVED MARKING MATERIALS, DAMAGE CAN OCCUR. 4 Monitor the ECI responses and record any vertical indication which is equal to or greater than a total of "3" vertical major screen divisions. Reinspect all indications for repeatability when you see it. Make a record of each indication on the HPC Stages 2-5 Spool Inspection Record Form (Figure 9). Identify locations of indications on the part using an approved marking pen (C05-003) or equivalent. Refer to the SPM, 70-16-02, TEMPORARY MARKING. (b) Do an ECI of the aft seal tooth. Refer to step 3.B.(2)(a) 1 through 3.B.(2)(a) 4 . For the aft seal tooth, the connector on the probe must point forward. When you inspect a seal tooth, make sure the probe touches the adjacent seal tooth as a guide. Refer to Figure 2 for the correct probe position. NOTE: The HPC stages 2-5 spool angular positions are in CW direction ALF with the "0" angle at the location of the stage 2 blade slot number "1" (Figure 8).GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] (3) Do a calibration/check after HPC stage 2-5 spool inspection, as follows: (a) Do a calibration/check after each ECI of the HPC stages 2-5 spool and when a system component or the inspector is changed, or when the inspector suspects that a change may have occurred in the inspection system. NOTE: You must do the calibration/check with initial settings and the following changes: 1 Reduce the vertical gain by -6 dB. 2 Return to the horizontal lift-off signal and then rotate the phase 15 degrees counterclockwise (CCW). (b) If the peak notch response is "3.5" to "4.5" vertical major screen divisions, the calibration is satisfactory. (c) If the peak notch horizontal response is less than "3.5" vertical major screen divisions, calibrate the probe and repeat the ECI. (d) If the peak notch horizontal response is "4.5" vertical major screen divisions or more, and there were no rejected indications, the test is satisfactory. (e) If the peak notch horizontal response is "4.5" vertical major screen divisions or more and there were confirmed indications which are equal to or greater than "3" vertical major screen divisions, repeat the calibration and reinspect all indications. (4) Do an evaluation of the data, as follows: (a) All indications which are equal to or greater than "3" vertical major screen divisions must be visually evaluated, refer to step 3.B.(4)(b) below. (b) If the source of the indication is a nick, a damaged seal tooth, or both, please contact GE90-100 Product Support Engineering (PSE). (5) Dispose parts, as follows: (a) If there is an ECI indication equal to or greater than "3" vertical major screen divisions, the part is not serviceable. Refer to paragraph 2.D., Parts Disposition for instructions. (b) Record the results and the disposition of parts on the HPC Stages 2-5 Spool Calibration And Inspection Record Form (Figure 9). Send a copy to the following GE90-100 PSE: e-mail: jacques.tschora@snecma.fr e-mail: francois.pagliano@snecma.fr C. Alternate Procedure - Spot FPI of the HPC Stages 2-5 Spool Seal Teeth WARNING: ACETONE IS EXPLOSIVE, AN IRRITANT, AN ALLERGEN, AND HAS POISONOUS DETERIORATION. USE VAPOR/FUME CONTROL OR USE A RESPIRATOR. WARNING: USE PROTECTIVE GLOVES TO PREVENT INJURY FROM SHARP EDGES AND ROUGH SURFACES. WARNING: ISOPROPYL ALCOHOL IS TOXIC AND FLAMMABLE. USE PERSONAL PROTECTION EQUIPMENT. USE IN A WELL-VENTILATED AREA. CAUTION: HPC BLADES AND HPC STAGES 2-5 SPOOL ARE TITANIUM PARTS. TITANIUM REACTS TO CHLORINATE AND HALOGEN PRODUCTS. MAKE SURE THAT TITANIUM PARTS CANNOT BE IN CONTACT WITH PROHIBITED SOLVENTS SUCH AS TRICHLOROETHYLENE, TRICHLOROETHANE, OR PERCHLOROETHYLENE, TO AVOID TITANIUM CONTAMINATION.GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] CAUTION: YOU CAN DAMAGE THE SEAL TEETH VERY EASILY. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, do not turn the HPC rotor while you clean or inspect the HPC stages 2-5 spool seal teeth. Turn the HPC rotor first and then inspect exposed area of the HPC stages 2-5 spool. NOTE: If this Service Bulletin is accomplished while the HPC upper half case and/or HPC lower half case is removed, handle the blades of HPC stage 1 blisk to manually turn the HPC rotor clockwise ALF. (1) Wipe the HPC stages 2-5 spool seal teeth with a clean white cloth saturated with isopropyl alcohol (C04-035) or acetone (C04-003). (2) Do a visual inspection of the HPC stages 2-5 spool seal teeth for cleanliness (Figure 1). Repeat step 3.C.(1) if necessary. CAUTION: USE ONLY APPROVED MARKING MATERIALS ON THE HPC STAGES 2-5 SPOOL. THE HPC STAGES 2-5 SPOOL IS A TITANIUM PART. TITANIUM REACTS TO CHLORINATE AND HALOGEN PRODUCTS. IF YOU DO NOT USE APPROVED MARKING MATERIALS, DAMAGE CAN OCCUR. (3) Do a visual inspection of the HPC stages 2-5 spool seal teeth (Figure 1). Make a mark with an approved marking pen (C05-003) or equivalent per SPM, 70-16-02, TEMPORARY MARKING, on the part at the location of all blends, nicks, or other anomalies which can cause an indication during the visual inspection. (4) Do a Spot FPI of the HPC stages 2-5 spool seal teeth (Figure 1). Refer to the SPM, 70-32- 03, SPOT-FLUORESCENT-PENETRANT INSPECTION. Inspect the entire circumference (360 degrees) of the seal teeth. Pay special attention to the forward side of the seal teeth. Identify locations of indications on the part with an approved marking pen (C05-003) or equivalent. Refer to the SPM, 70-16-02, TEMPORARY MARKING. NOTE: Fluorescent penetrant inspection per SPM, 70-32-02, FLUORESCENT PENETRANT INSPECTION, is considered as an alternate method to inspect the HPC stages 2-5 spool forward seal teeth when the HPC stages 2-5 spool is inspected at piece part level per GE90-100 EM, 72-31-06, INSPECTION 001. (5) Dispose parts, as follows: (a) FPI indications are not permitted. If indications are present, the part should be considered unserviceable. Refer to paragraph 2.D., Parts Disposition for instructions. (b) Record the Spot FPI results and the disposition of the inspected HPC stages 2-5 spool on the HPC Stages 2-5 Spool Inspection Record Form (Figure 9). Send a copy to the following GE90-100 PSE: e-mail: jacques.tschora@snecma.fr e-mail: francois.pagliano@snecma.frGE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Inspection of the HPC Stages 2-5 Spool Seal Teeth Figure 1GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] HPC Stages 2-5 Spool - Interstage Seal Teeth Probe Positions Figure 2GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Calibration Standard - Description Figure 3GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Lift-Off Adjustment Figure 4GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Amplitude Adjustment Figure 5GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Phase Adjustment Figure 6GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Evaluation Level Figure 7GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] Top Location - 12 O'clock Position Figure 8GE90-100 - SB 72-0320 R01 ENGINE - High Pressure Compressor Rotor Assembly (72-31-00) - Inspection of HPC Stages 2-5 Spool Seal Teeth

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... =ge90-100-sb-72-0320-r01.htm&strAction=View&open=openwindow&enginefamily=GE90-100 [5/17/2010 10:03:26 AM] HPC Stages 2-5 Spool Inspection Record Form Figure 9

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