TASK 05-00-01-220-501 Procedure To Identify And Control The Life Of A Component

DMC:V2500-A0-05-00-0100-00A-288A-D|Issue No:002.00|Issue Date:2017-05-01

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

Description

  1. TASK 05-00-01-220-501 Procedure To Identify And Control The Life Of A Component

    1. General

      1. Refer to SPM TASK 70-09-00-400-501 for an approved permanent procedure to apply an identification mark to a component.

    2. The Maximum Life of a Part (Cycles)

      NOTE

      Some given parts have a maximum number of cycles that they can use. These parts are specified in the applicable engine manual.

      1. Maximum life (cycles)

        1. An Engine Cycle is defined as any flight consisting of one take-off and landing regardless of the length of flight or whether or not thrust reverser is used on landing. Each touch and go is considered an additional cycle.

        2. If it is necessary to use an engine for special extended operations it can cause a change in the cycle life of a part. Engines which are used for pilot instruction can change the cycle life of a part. Engines used during pilot instruction can be put into two groups.

          1. Group A: Engines used during pilot instruction for less than 10 percent of their total time each year.

            1. In this group, the specified cycle as given in Paragraph can be used.

          2. Group B: Engines used during pilot instruction for more than 10 percent of their total time each year.

            1. In this group, it will be necessary to collect data of the N1 rotor speeds for the average pilot instruction flight profile used by the operator. This data can be collected manually or automatically. Send this data to the International Aero Engines Product Support Department to calculate a cycle for each hour factor for a rotating part. This factor can then be used by the operator to calculate the cycles used for each hour during pilot instruction. For the remaining time for Group B engines, the cycle as specified in Paragraph is used. At a regular time (approximately 6 months) the N1 rotor speed data collected during subsequent pilot instruction must be sent to the Product Support Department. The cycles for each hour factor can then be calculated again to make sure it has not changed. If a change in the instruction procedure occurs the cycles for each hour factor must be calculated again.

        3. The International Aero Engines Product Support Department will recommend to operators which group their engine will go in. They will also recommend to operators of Group B engines how to collect the correct data and the procedures to follow when the engines in Group B are used.

        4. The cycles used by a rotating part must be calculated before this record is first used. Calculate the cycles used by one of the procedures given as follows:

          1. Do an analysis of records kept before to estimate the total cycles used by each rotating part.

          2. Calculate total cycles

            Total cycles =

            Total rotating time (hours) / Average flight time (hours)

        5. A record of each cycle must be kept during engine operation. The record of total cycles must be changed for each specified part when it is removed from the engine. A record of the engine model or models, for the accumulated cycles should be kept.

        6. Make a cycle identification mark for the total number of cycles on each specified part. Use the symbol CYL and an approved permanent procedure to identify the part with a cycle identification mark.

          NOTE

          New specified parts installed during an engine repair before the usual overhaul must be identified with the symbol NEW and the date of installation.

        7. Parts must not be used after the total cycles for a part has equaled the maximum permitted for that part, including bump limitations.

        8. Requirements for managing life limited parts that are certified for use in multiple engine models (-A1, -A5, -D5) are listed in:

          1. TASK 05-10-00-990-000-A00 Instructions for Continued Airworthiness V2500-A1.

          2. TASK 05-10-00-990-000-B00 Instructions for Continued Airworthiness V2500-A5.

          3. V2500-D5-05-10-0000-00A-288A-D Instructions for Continued Airworthiness V2500-D5,.this task is located within the V2500-D5 Engine Manual.

          4. NOTE

            V2500-E5 LLPs are not certified for use in A1, A5 or D5 models.
Change Type:

Revised the full procedure. (15VA010)