TASK 73-11-49-200-101-B00 Control Fuel Tubes (Steel) - Examine the Tubes with Silver Plated Tube Coupling Nuts, Inspection-001

DMC:V2500-A0-73-11-4901-00B-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 73-11-49-200-101-B00 Control Fuel Tubes (Steel) - Examine the Tubes with Silver Plated Tube Coupling Nuts, Inspection-001

Effectivity

FIG./ITEM

PART NO.

11-100

6A2143

11-100

6A5392

12-100

6A2146

12-100

6A5305

12-100

6A6179

12-100

6A5304

12-100

6A6180

12-500

6A2145

13-100

6A2144

14-100

6A2147

14-100

6A5010

15-100

6A2148

15-100

6A5011

16-100

6A2149

16-100

6A5012

18-100

6A2151

19-100

6A2150

19-500

6A2152

General

This TASK gives the procedure for the inspection of the steel fuel tubes with silver plated tube coupling nuts. 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.

A ** following a repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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 73-11-49-230-055-001 Examine the Fuel Tube for Cracks

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

      2. Do a crack test on the parts given in Para 1, Table. Use the applicable penetrant inspection procedure.

        1. Fuel tube assemblies. Refer to SPM TASK 70-23-01-230-501.

          1. Cracked

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

    2. SUBTASK 73-11-49-230-055-002 Examine the Fuel Tube for Cracks

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

      2. Do a crack test on the parts given in Para 1, EFFECTIVITY. Use the applicable penetrant inspection procedure.

        1. Fuel tube assemblies. Refer to SPM TASK 70-23-02-230-501.

          1. Cracked

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

    3. SUBTASK 73-11-49-220-091 Examine the Fuel Tube Surfaces

      1. Examine all the tube surfaces.

        1. Pitted

          1. Unlimited number of pitts 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. Less than 0.500 in. (12.75 mm) from the tube connectors.

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

        2. In areas other than Step of smooth type and large area related to depth; which do not decrease the tube diameter more than ten percent in one location.

        1. Accept

        3. In areas other than Step of smooth type and small area; not more than 0.125 sq in. (80.60 sq mm) with a depth not more than 0.025 in. (0.64 mm).

        1. Accept

        4. Limits more than Step and 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.

    4. SUBTASK 73-11-49-220-092 Examine the Fuel Tube End Connectors

      1. Union adapters

        1. Threads

          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.

        2. Sealing faces

          1. Galled

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

        3. Flange bolt holes

          1. Burred

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

        4. Galled seal ring grooves

          1. Not more than 0.005 in. (0.13 mm) in depth.

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

          2. Limits more than Step.

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

        5. Lockwire holes

          1. Damaged

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

      2. Tube coupling nuts

        1. Threads

          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.

        2. Lockwire holes

          1. Damaged

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

        3. Faces that seal

          1. Galled

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

    5. SUBTASK 73-11-49-220-093 Examine the Fuel Tube (12-100), (13-100) and (16-100) Lugs

      1. Cracked or damaged

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

      2. Bolt holes burred

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

    6. SUBTASK 73-11-49-210-053 Examine the Fuel Tube Bore

      1. Plugged

      1. Clear with dry compressed air.

Requirements After Job Completion

Follow-On Conditions

NONE