TASK 73-22-49-200-106 Fuel System Sensing Air Tubes - Examine The EEC P2.5 And P12.5 Pressure Air Tube, Inspection-006

DMC:V2500-A0-73-22-4900-05A-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 73-22-49-200-106 Fuel System Sensing Air Tubes - Examine The EEC P2.5 And P12.5 Pressure Air Tube, Inspection-006

Effectivity

FIG./ITEM

PART NO.

09-100

6A2133

09-500

6A2122

09-500

6A6007

10-100

6A2126

10-100

6A6213

10-500

6A1692

10-500

6A6214

11-100

6A1693

12-100

6A2135

General

This TASK gives the procedure for the inspection of the P2.5 and P12.5 pressure air tube assembly. For the other fuel system air tubes and parts, refer to Inspection-000 TASK 73-22-49-200-100 and in the Component Maintenance Manual Inspection-000 TASK 73-22-49-200-400.

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 73-22-49-100-100.

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:

Methods 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 73-22-49-230-053-001 Examine the P2.5 and P12.5 Pressure Air Tube Assembly for Cracks

    1. Clean the part. Refer to Cleaning-000 TASK 73-22-49-100-100.

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

      1. P2.5 and P12.5 pressure air tube assembly (09-100), (09-500), (10-100), (10-500) (11-100) and (12-100).

      3. Cracked

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

    2. SUBTASK 73-22-49-230-053-002 Examine the P2.5 and P12.5 Pressure Air Tube Assembly for Cracks

    1. Clean the part. Refer to Cleaning-000 TASK 73-22-49-100-100.

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

        1. P2.5 and P12.5 pressure air tube assembly (09-100), (09-500), (10-100), (10-500) (11-100) and (12-100).

        2. Cracked

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

    3. SUBTASK 73-22-49-220-056 Examine the P2.5 and P12.5 Pressure Air Tube Assembly Tube Surface

      1. Examine the tube surface.

        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. (0.025 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 pits within 0.125 in. (3.175 mm) area.

          1. Accept

          3. Other than in Step and Step.

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

        2. Dented

          1. Not more than 0.500 in. (12.70 mm) from fittings or bends.

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

          2. In areas other than in Step: Of large smooth area if the maximum diameter is 10 times the depth and bore is not decreased by more than 10 percent at any one point.

          1. Accept

          3. In areas other than in Step: Of small smooth area not more than 0.125 sq in. (80.0 sq mm) if depth is not more than 0.025 in. (0.64 mm).

          1. Accept

          4. Limits more than Step or 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 0.003 in. (0.076 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          2. In areas other than in Step with rounded bottom and not more than 0.003 in. (0.076 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          3. Limits more than Step or 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 0.003 in. (0.076 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          2. In areas other than in Step not more than 0.003 in. (0.076 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          3. Limits more than Step.

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

        5. Scratched or scored.

          1. On the outer surface of a bend not more than 0.002 in. (0.051 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          2. In areas other than Step Not more than 0.002 in. (0.051 mm) in depth.

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

          3. Limits more than Step or 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 73-22-49-220-057 Examine the P2.5 and P12.5 Pressure Air Tube Assembly 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. Lockwire holes

          1. Damaged

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

        3. Flange bolt holes

          1. Burred

          1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

      2. Union nuts.

        1. Threads

          1. Pick-up

          1. Repair, VRS6226 (Repair-004) TASK 73-22-49-300-004.

          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 73-22-49-220-058 Examine the P2.5 Pressure Air Tube Assembly (09-100) Tube Lug

      1. Distorted, small distortion can be removed if cracks are not caused.

      1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

      2. Cracked

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

      3. Bolt holes burred.

      1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

    6. SUBTASK 73-22-49-220-059 Examine the P2.5 and P12.5 Pressure Air Tube Assembly Tube Bore

      1. Plugged

      1. Clear with dry compressed air.

  7. SUBTASK 73-22-49-220-092 Examine the P2.5 and P12.5 Pressure Air Hose Assembly (11-500) and (12- 500)

    NOTE

    Procedure for flexible hoses transferred to Inspection-008 TASK 73-22-49-200-108.

    8. SUBTASK 73-22-49-220-093 Examine the P2.5 and P12.5 Pressure Air Tube Assembly (10-100) and (12- 100) Moisture Trap

      1. Galled

        1. Not more than 0.002 in. (0.051 mm).

        1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

        2. More than in Step.

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

      2. Scored

        1. Not more than 0.002 in. (0.051 mm).

        1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

        2. More than in Step.

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

      3. Nicked

        1. Not more than 0.002 in. (0.051 mm).

        1. Repair, VRS6225 (Repair-001) TASK 73-22-49-300-003.

        2. More than in Step.

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

Requirements After Job Completion

Follow-On Conditions

NONE