TASK 73-11-49-200-102-B00 Control Fuel Tubes (Titanium) - Examine, Inspection-002

DMC:V2500-A0-73-11-4902-00A-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 73-11-49-200-102-B00 Control Fuel Tubes (Titanium) - Examine, Inspection-002

Effectivity

FIG./ITEM

PART NO.

02-100

2A0616

03-100

2A0649

03-500

2A0650

05-100

2A0615

07-100

2A1417

07-500

2A0618

General

This TASK gives the procedure for the inspection of the titanium fuel tubes. 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 73-11-49-230-053 Examine the Fuel Tubes for Cracks

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

      2. Do the crack test on the parts that are given below. Use the applicable penetrant inspection procedure.

        1. Fuel tubes (02-100), (03-100), (03-500), (05-100), (07-100) and (07-500). Refer to SPM TASK 70-23-05-230-501.

          1. Cracked

          1. Reject

    2. SUBTASK 73-11-49-220-075 Examine the Fuel Tubes Surfaces

    1. Refer to Figure.

      2. Examine all the tube surfaces.

        1. Pitted

          1. Up to 0.002 in. (0.05 mm) in depth, 0.004 in. (0.1 mm) in diameter and no other pits within 0.250 in. (6.35 mm) area.

          1. Accept

          2. Other than Step.

          1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

        2. Pit cluster; within 0.250 in. (6.35 mm) diameter.

          1. Up to 0.001 in. (0.025 mm) in depth, 0.002 in. (0.05 mm) in diameter and no other pit clusters within 6.0 in. (152.4 mm) area.

          1. Accept

          2. Other than Step.

          1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

        3. Dented

          1. Maximum of two dents per each 12.0 in. (304.8 mm) in length of tubing; up to two percent of nominal tube OD in depth with more than 0.062 in. (1.5 mm) radius at edges and bottom, and no other dents within 4.0 in. (101.6 mm) area.

          1. Accept

          2. Less than 0.250 in. (6.35 mm) from any weld joint.

          1. Reject

          3. Other than Step and Step.

          1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

        4. Nicked

          1. Nicks that are round bottomed and less than 0.004 in. (0.10 mm) in depth if all burrs are removed.

          1. Accept

          2. Nicks more than Step.

          1. Reject

        5. Galled

          1. Fretting not more than a maximum depth of 0.004 in. (0.10 mm) on the outside surface of the tube.

          1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

          2. More than Step.

          1. Reject

        6. Scratched or scored

          1. Up to 0.004 in. (0.1 mm) in depth.

          1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

          2. More than in Step.

          1. Reject

        7. Wrinkled on inside bend radius.

          1. Up to 0.005 in. (0.127 mm) from height of peak to depth of valley distance.

          1. Accept

          2. More than in Step.

          1. Reject

    3. SUBTASK 73-11-49-220-076 Examine the Fuel Tube Threads

      1. Examine the thread on the tubes

        1. Damaged

          1. On union nut with thrust wire.

          1. Reject

          2. On other part

          1. Reject

    4. SUBTASK 73-11-49-220-077 Examine the Fuel Tubes Spigot Diameter of the Spigot Joint Type Fitting

    1. Refer to Figure.

      2. Examine the spigot diameter of the spigot joint type fitting at location 1.

        1. Worn

        1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

    5. SUBTASK 73-11-49-220-078 Examine the Fuel Tubes Seal Ring Land of the Slide Joint Type Fitting

    1. Refer to Figure.

      2. Examine the seal ring land of the slide joint type fitting at location 2.

        1. Worn

        1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

    6. SUBTASK 73-11-49-220-079 Examine the Fuel Tubes Flange of the Spigot Type Fitting

      1. Examine the flange of the spigot type fitting.

        1. Worn

        1. Repair, VRS1630 (Repair 004) TASK 73-11-49-300-004.

    7. SUBTASK 73-11-49-220-080 Examine the Fuel Tubes Conical Seat

      1. Examine the conical seat.

        1. Worn

        1. Reject

    8. SUBTASK 73-11-49-220-081 Examine the Fuel Tubes Spherical Seat

      1. Examine the spherical seat.

        1. Worn

        1. Reject

    9. Figure: Inspection of the Fuel Tubes

    Inspection of the Fuel Tubes

Requirements After Job Completion

Follow-On Conditions

NONE