Black Mountain Aviation maintains an extensive engine component inventory tailored specifically for Safran Arriel engines used on Airbus helicopters. With FAA-certified, traceable parts compliant with OEM standards, their inventory ensures operators maintain peak reliability and mission readiness.

Overview of Component Categories

Fuel Control Units & Fuel Controls

One of the core segments of Black Mountain Aviation's engine component inventory includes fuel control units (FCUs). For Arriel 1D1 engines, they stock units like FCU PN 0164540120 SN C208B, boasting a TSO (Time Since Overhaul) of 800.8 and a calendar due date in February 2029. These certified FCUs ensure precise fuel metering and reliable performance.



Engine Inventory Management | AJW

Overspeed Drain Valves

A critical safety component, overspeed drain valves, are in stock within the engine component inventory. Multiple PN 0174120180 valves with serial numbers like SN 3028 and SN 3030 come with complete log cards. Many have future calendar due dates (e.g., due November 2031 or August 2029), guaranteeing future serviceability.

Start/Drain Valves

Start/drain valves are also meticulously cataloged. Examples include PN 0174078030 with serials SN 2866, SN 4497, SN 998, and SN 3621M. These include full log cards, TSO values, and remarks—like SN 998, which is TSO 4275.8 and calendar due March 11, 2026.

Freewheel Shafts

In the engine component inventory, Black Mountain Aviation maintains freewheel shafts PN 0292907680 across several serial numbers (SN 2062B, 3986B, 4817). These come with zero time since overhaul and complete log cards.

Certified Engine Modules

Arriel 1D1 & 2 Modules

Their engine component inventory features certified engine modules across the Arriel range.

Arriel 1D1 Modules

A fully traceable 1D1 Fuel Control Unit (FCU PN 0164540120 SN C208B) is listed with a TSO of 800.8, calendar due February 2029, and a proper log card.

Arriel 2 Modules

Some standout items include:

  • Module 1 (2B1) PN 70NM010030 SN 987 – zero time, log card included.

  • Module 2 PN 70BM02010 SN 113, SN 219, SN 96, SN 389 – all TSO 0 with log cards.

  • Module 3 PN 70NM032030 SN 831 – log card.

  • Module 4 PN 70BM041720 SN 00081 with TSO 1918.5; PN 70BM041720 SN 1077 with TSO 0 and documented PT/CREM/TREM values.

  • Module 5 PN 70BM052000 SN 1691 and SN 359 – log cards included.

Arriel 2 Freewheel Shafts & HMUs

Also stocked are Arriel 2 freewheel shafts (PN 0292900020, SN 7165 and SN 1314B) and Hydro-Mechanical Units (HMU PN 0292862620 SN 26310 with 2340.40 TREM; PN 0292862200 SN 50276 with zero time, available late July).

Complete Engines & Exchange Solutions

Black Mountain Aviation offers full engines and overhaul-able modules. Highlights include:

  • A complete 2B1 engine with zero TSO on modules, freewheel shaft, HMU, and a total package price of $1,105,000 outright, with exchange pricing available.

  • A 2D HMU PN 0292860750 SN 8095 with zero TSO, available February 2025.

These offerings demonstrate Black Mountain Aviation's commitment to full-service exchange and overhaul solutions.

Why OEM‑Certified Components Matter

Traceability & Compliance

Every part in their engine component inventory is FAA-certified and OEM-compliant. This traceability ensures full log card histories and calendar/time limits for overhaul and inspection—critical for meeting safety regulations.

Safety and Mission Readiness

Using genuine, certified components minimizes the risk of in‑service failures and maintains helicopter reliability. Their inventory supports ready access to parts for fleet operations.

Cost‑Effectiveness Through Exchanges

Rather than waiting on new parts, operators can exchange modules or entire engines. This exchange pricing reduces downtime and lowers acquisition costs.

Inventory as of July 2025

  • Overspeed drain valves (PN 0174120180, multiple SNs) with calendar due dates stretching to 2031.

  • Start/drain valves (PN 0174078030) with TSOs up to 4275.8.

  • Freewheel shafts (PN 0292907680) with zero TSO and detailed log cards.

  • Complete Arriel modules across series 1D1 and 2B—from individual modules to full engine assemblies.

  • HMUs and shafts for conversion or support in module exchanges.

Conclusion

Black Mountain Aviation's engine component inventory underscores their role as a premier FAA-certified FAA Part‑145 repair station serving Airbus‑powered helicopters like the H125, AS350 B3, and EC130. Their extensive stock—including certified fuel control units, overspeed and start/drain valves, freewheel shafts, HMUs, and complete Arriel engines—ensures safety, readiness, and cost efficiency. Whether operators seek quick repairs, module swaps, or a fully airworthy engine, this inventory offers reliable options backed by traceability and regulatory compliance.