1. Arriel Engine Module Failures
Common Issues:
- Hot section distress (Modules 3, 4, or 5)
- Oil leaks and cracked seals on
Module 2B
- Fuel control malfunctions in HMUs (Hydromechanical Units)
- Freewheel shaft wear or misalignment
These problems are common in
Safran Arriel 1D1,
2B, and
2B1 engines, especially under high-usage environments like aerial tour operations or firefighting.
How We Fix It:
- Our technicians inspect each engine using Safran-approved procedures and borescope analysis.
- We stock
overhaul-exchange modules for fast replacement, including:
- Module 1: 70BM012000
- Module 3: 70BM032020
- Freewheel Shaft Assembly: 0292900020
- Each repair is logged and certified per FAA requirements, using
OEM or PMA-approved parts.
We also offer field support for engines removed in remote areas, a major benefit for operators across Nevada, Utah, and the Southwest.
2. Rotor System Vibration or Instability
Common Issues:
- Excessive play in tail rotor spiders or pitch change units
- Worn AVA (anti-vibration assemblies) causing resonance at certain RPMs
- Cracked or deformed swashplates, especially on EC130s
These symptoms lead to increased pilot fatigue, decreased control responsiveness, and long-term airframe stress.
How We Fix It:
We stock and service high-failure rotor system parts including:
- Tail Rotor Spiders: 350A33-2030-00, 350A33-2167-00
- Swashplates: 350A37-1004-10, 350A37-1004-11
- AVA Assemblies: 350A31-0033-02 through 350A31-0033-06
Our overhaul and exchange program for high-wear items reduces downtime and ensures all rotor components meet factory tolerances and dynamic balance requirements.
3. Bevel and Epicyclic Gearbox Damage
Common Issues:
- Bevel gear scoring or gear lash
- Epicyclic reduction gear wear due to high torque or poor lubrication
- Improper maintenance of MGB/gearbox filters
These are critical systems that affect lift and tail rotor input, making proactive service non-negotiable.
How We Fix It:
We perform precision inspections of:
- Epicyclic reduction gearboxes: 350A32-0120-00
- Bevel gear assemblies: 350A32-0350-02M
We use a combination of factory measurement specs, endoscope inspections, and magnetic particle testing to identify fatigue or stress cracks before they evolve into flight-critical failures.
4. Avionics Malfunctions and Certification Issues
Common Issues:
- Transponder test failures under FAR 91.413/91.227
- ELT battery expiration or test failure under 91.207
- IFR pitot-static system drift or blockage
- Outdated or non-compliant ADS-B systems
Many Airbus helicopters have legacy avionics platforms not compliant with current FAA requirements or operator needs.
How We Fix It:
As a certified
avionics installation and repair facility, we offer:
Our avionics shop also performs
on-site certifications to keep your aircraft compliant without unnecessary downtime.
5. Poor Recordkeeping or Missing Compliance Logs
Common Issues:
- Missing component times
- Gaps in maintenance tracking
- Improper FAA documentation for inspections or AD compliance
Even when maintenance is performed, lack of records can ground an aircraft during an audit or resale.
How We Fix It:
Black Mountain Aviation ensures:
- Digital and physical records of all services performed
- FAA Form 8130-3 issuance for major components
- AD research and compliance tracking tied to aircraft serial number
We can also assist in rebuilding maintenance records for aircraft that have been serviced elsewhere with incomplete logs.
6. Hard-to-Find Replacement Parts for Airbus Helicopters
Common Issues:
- Long lead times for Arriel modules or rotor components
- OEM backorders for swashplates, spiders, or tail gearboxes
- Limited U.S. stock for EC130 T2-specific parts
How We Fix It:
We maintain one of the
most comprehensive inventories in the region, including:
- Arriel 1D1 and 2B1 engine modules
- Crossbeams and bidirectional suspension bars
- Overhaul-exchange stock for swashplates and tail rotor components
What Sets Black Mountain Aviation Apart?
At our
FAA-certified
repair station (LVBR789X), we don’t just fix helicopters—we solve problems that impact your mission, operations, and safety record. Our strengths include:
- Over
250 combined years of technician experience
- Airbus and Safran specialists trained on ASTAR, EC130, and Arriel 1D1/2B/2B1
- An on-site avionics shop fully certified for installation, inspection, and upgrade services
- A massive inventory of in-demand parts for quick turnaround
- Strategic location at
Boulder City Municipal Airport (KBVU) with full FBO support
Our team includes certified A&P/IAs with experience from the
US Forest Service,
military rotorcraft repair, and
OEM-specific training programs. We understand the nuances of your aircraft and deliver repairs that meet or exceed factory specs.
Who We Serve
Our typical clients include:
- Tour operators running Airbus H125s and EC130s
- Government and contract rotorcraft missions
- Charter operators flying under Part 135
- Private helicopter owners and aviation businesses in Nevada, Utah, and the Southwest
Final Thoughts
Common maintenance issues in Airbus and Safran helicopters may be predictable—but their impact doesn’t have to be. From engine module wear and gearbox inspection to avionics upgrades and rotor system replacements, our team delivers high-caliber solutions with a service-first mindset.
If you're looking for a reliable, FAA-certified partner who understands your aircraft down to the part number, trust
Black Mountain Aviation to keep you flight-ready.
Contact us at (702) 294-1044 or visitbmaviation.net to schedule a consultation or request a parts quote.
