TASK 73-11-49-200-103-B00 Control Fuel Tubes (Steel) - Examine the Tubes with Silver Plated Tube Coupling Nuts And Flanged Adaptor, Inspection-003

DMC:V2500-A0-73-11-4901-02B-310A-C|Issue No:001.00|Issue Date:2013-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 73-11-49-200-103-B00 Control Fuel Tubes (Steel) - Examine the Tubes with Silver Plated Tube Coupling Nuts And Flanged Adaptor, Inspection-003

Effectivity

FIG./ITEM

PART NO.

09-100

2A0655

09-100

2A0656

09-100

6A5390

General

This TASK gives the procedure for the inspection of the steel fuel tubes with silver plated tube coupling nuts and a flanged adaptor. For the other fuel tubes and parts, refer to Inspection-000 TASK 73-11-49-200-100 and TASK 73-11-49-200-400 in the Component Maintenance Manual (CMM-MECH-V2500-1IA).

Fig./item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig./item numbers are used. For the service bulletin alpha variants refer to the IPC.

The policy that is necessary for Inspection is given in the SPM TASK 70-20-01-200-501.

All the parts must be cleaned before they are examined. Refer to Cleaning-000 TASK 73-11-49-100-100.

All the parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in the relevant SUBTASK. Do the crack test before the part is visually examined.

Do not discard a part until you are sure there are no repairs available. Refer to the instructions in Repair before a discarded part is used again or oversize parts are installed.

Parts which must be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a subsequent date.

All parts must be examined to make sure that all the repairs are completed satisfactorily.

Practices and processes referred to in the procedure by the TASK/SUBTASK number are in the SPM.

NOTE

The consumable materials are given in the related SPM TASK.

References

Refer to the SPM for data on these items.

Definitions of Damage - Specified Types of Damage, SPM TASK 70-02-02-350-501.

Inspection Policy and Inspection of Parts, SPM TASK 70-20-01-200-501.

Some data on these items is contained in this TASK. For more data on these items refer to the SPM.

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 73-11-49-230-064 Examine the Fuel Tube for Cracks

    1. Clean the part. Refer to Cleaning-000 TASK 73-11-49-100-100.

      2. Do the crack test on the part that is given below. Use the applicable penetrant inspection procedure.

        1. Fuel tubes (09-100). Refer to SPM TASK 70-23-05-230-501.

          1. Cracked

          1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

    2. SUBTASK 73-11-49-220-116 Examine the Fuel Tube Surface

      1. Examine all the tube surfaces

        1. Pitted

          1. Unlimited number of pits not more than 0.001 in. (0.025 mm) in depth, 0.062 in. (1.57 mm) in length and 0.010 in. (0.25 mm) in width.

          1. Accept

          2. Maximum of three pits for each 2.0 in. (50.8 mm) length of tubing; not more than 0.003 in. (0.075 mm) in depth, 0.062 in. (1.57 mm) in length, 0.010 in. (0.25 mm) in width and no other dents within 0.125 in. (3.175 mm) area.

          1. Accept

          3. Other than Step and Step.

          1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001 or SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      2. Dented

        1. Maximum of two dents for each 12.0 in. (304.8 mm) length of tube: not more than five percent of nominal tube OD in depth. Nominal tube OD is 0.75 in. (19.05 mm).

        1. Accept

        2. Other than in Step.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      3. Nicked

        1. On the outer surface of a bend with rounded bottom and not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        2. In areas other than Step with rounded bottom and not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        3. Limits more than Step and Step.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      4. Galled

        1. On the outer surface of a bend not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        2. In areas other than Step not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        3. Limits more than Step and Step.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      5. Scratched or scored

        1. Up to 0.002 in. (0.05 mm).

        1. Accept

        2. On the outer surface of a bend not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        3. In areas other than Step not more than 0.004 in. (0.10 mm) in depth.

        1. Repair, VRS6221 (Repair-001) TASK 73-11-49-300-001.

        4. Limits more than Step and Step less than 0.500 in. (12.7 mm) in length.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

        5. Limits more than Step.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      6. Wrinkled

        1. Maximum of three wrinkles for each tube; not more than 0.020 in. (0.50 mm) from height of peak to depth of valley distance.

        1. Accept

        2. More than in Step.

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

    3. SUBTASK 73-11-49-220-117 Examine the Fuel Tube Coupling Nut and Tube Conical Seat

      1. Examine the tube coupling nut thread.

        1. Damaged

          1. Pick-up

          1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

          2. Crossed or stripped

          1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

          3. Silver plate missing

          1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

        2. Lockwire holes

          1. Damaged

          1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      2. Examine the tube conical seat.

        1. Worn

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

        2. Scored/scratched

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

    4. SUBTASK 73-11-49-220-118 Examine the Fuel Tube Flanged Connector

      1. Examine the spigot diameter of spigot joint type fitting.

        1. Worn

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      2. Examine the seal ring land.

        1. Worn

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

      3. Examine the flanged connector.

        1. Worn

        1. SPM VRS7001 (Repair-001) TASK 70-35-24-300-501.

    5. SUBTASK 73-11-49-210-057 Examine the Fuel Tube Bore

      1. Examine the bore

        1. Plugged

        1. Clear with dry compressed air.

Requirements After Job Completion

Follow-On Conditions

NONE