Airworthiness Directive · Amendment 39-21496 · Turbine section
Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines
Superseded. A later AD replaced this one: AD 2023-22-03. Comply with the one in force.
This AD applies to all Safran Helicopter Engines, S.A. (Safran) (Type Certificate previously held by Turbomeca, S.A.) Arriel 2D and Arriel 2E model turboshaft engines.
The FAA is adopting a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. (Safran) Arriel 2D and Arriel 2E model turboshaft engines. This AD was prompted by the manufacturer revising the maintenance and overhaul manuals to introduce new or more restrictive airworthiness limitations and maintenance tasks. This AD requires the replacement of certain critical parts before reaching their published in-service life limits, performing scheduled maintenance tasks before reaching their published periodicity, and performing unscheduled maintenance tasks when the engine meets certain conditions. As a terminating action, this AD requires operators to revise the airworthiness limitation section (ALS) of their existing approved aircraft maintenance program (AMP) by incorporating the revised airworthiness limitations and maintenance tasks. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Replace each critical part before reaching the in-service life limits specified in paragraph 1.C., “Table of authorized in-service life limits for the ARRIEL 2D,” or “Table of authorized in-service life limits for the ARRIEL 2E,” Chapter 05-10-00 of the Safran ARRIEL Maintenance Manual (MM) for that engine.
(2) Before reaching the periodicity specified in paragraph 1., “Tables of Mandatory Maintenance Tasks,” table D., “Scheduled inspection,” Chapter 05-10-00 of the Safran ARRIEL MM for that engine, perform all maintenance tasks specified in table D.
(3) When the engine meets the conditions specified in paragraph 1., “Tables of Mandatory Maintenance Tasks,” table E., “Unscheduled inspection,” Chapter 05-10-00 of the Safran ARRIEL MM for that engine, perform the maintenance tasks specified in table E.
(4) If, during performance of the maintenance tasks required by paragraph (g)(2) or (3) of this AD, a discrepancy is found, as defined in the applicable airworthiness limitation section (ALS), perform the corrective actions specified in paragraph 1., “Tables of Mandatory Maintenance Tasks,” table D., “Scheduled inspection,” or table E. “Unscheduled inspection,” Chapter 05-10-00 of the Safran ARRIEL MM for the engine.
(5) If no compliance time is identified in Chapter 05-10-00 of the Safran ARRIEL MM, perform the corrective action before further flight.
Where the applicable Safran ARRIEL MM chapters provide instructions to send the Module 03 to a Safran Helicopter Engines-approved repair center, the operator may choose to send the Module 03 to any FAA-approved repair center capable of performing the required actions.
As terminating action to the requirements in paragraph (g) of this AD, within 365 days after the effective date of this AD, revise the ALS of the existing approved aircraft maintenance program (AMP) by incorporating:
(i) Task 05-10-00-150-801-A01, “Airworthiness Limitations—General,” from the applicable Safran ARRIEL MM chapter.
(ii) Task 05-10-00-200-801-A01, “Airworthiness Limitations—Authorized In-Service Life Limits,” from the applicable Safran ARRIEL MM chapter.
(iii) Task 05-10-10-200-801-A01, “Airworthiness Limitations—Tables of Mandatory Maintenance Tasks,” from the applicable Safran ARRIEL MM chapter.
(1) For the purpose of this AD, a “critical part” is a part identified in paragraph 1.C., “Table of authorized in-service life limits for the ARRIEL 2D,” or “Table of authorized in-service life limits for the ARRIEL 2E,” Chapter 05-10-00 of the Safran ARRIEL MM for that engine.
(2) For the purpose of this AD, the “Chapter 05-10-00 of the Safran ARRIEL MM” is:
(i) Chapter 05-10-00 of Safran Aircraft Engines ARRIEL 2D MM No. X292 R1 450 2, Update No. 20, dated June 15, 2020; or
(ii) Chapter 05-10-00 of Safran Aircraft Engines ARRIEL 2E MM No. X292 R2 300 2, Update No. 16, dated June 15, 2020.
(3) For the purpose of this AD, the “approved maintenance program” is defined as the basis for which the operator ensures the continuing airworthiness of each operated helicopter.
