121 Engineering Solutions

What 121 Engineering Solutions does

121 Engineering Solutions LLC is a US-based aviation engineering services firm that provides technical support to airlines, air cargo operators, business jet operators, MROs, and aviation suppliers. The company delivers its services through a combination of off-site phone and video consultations, on-site support upon mutual approval, and a network of independent contractor service providers. Its core offerings include FAA Designated Engineering Representative (DER) and Designated Airworthiness Representative (DAR) consulting, engineering services spanning Airworthiness Directives, Service Bulletins, Engineering Orders, Supplemental Type Certifications, Parts Manufacturer Approvals, and Repair Approvals, plus comprehensive aircraft documentation services. Specialized offerings include aircraft fuel treatment programs, in-flight vibration testing and analysis, aircraft livery paint and markings support, and DER-supported flammability testing and reporting. Coverage spans more than 30 ATA Chapters across systems, structures, power plant, and avionics disciplines.

The business operates on a professional services revenue model with no publicly disclosed pricing. Revenue streams include no-charge General Inquiry calls, chargeable Service Calls with pre-paid minimum fees, separately quoted on-site engagements, and independent contractor engagements billed hourly or per job. The company employs a sales-led go-to-market approach, with the Managing Director personally involved in client engagements and a commissioned independent contractor network functioning as a distributed sales channel. An online Service Call Request portal allows customers to self-select service types, ATA chapters, and appointment windows across multiple time zones.

The firm is privately held, domiciled in Georgia, with operational presence in Tampa, Florida, and a 51-100 employee base. Leadership, including Managing Director Joel Turner, brings prior management experience from Delta TechOps and Goodrich Aerospace, FAA Repair Station management, and participation in FAA advisory boards and Performance Aviation Rule Making Committees. No funding rounds, M&A activity, or institutional investors have been disclosed.

Name

121 Engineering Solutions

Legal name

121 Engineering Solutions LLC

Website

https://121engineeringsolutions.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

51–100 employees

Short description

121 Engineering Solutions is a US-based aviation engineering services firm providing FAA DER/DAR consulting, technical engineering, and documentation support to airlines, air cargo operators, business jet operators, MROs, and aviation suppliers across 30+ ATA Chapters.

Ownership category

akta.pro rank

Product category

Aviation Engineering Services

NAICS

Engineering Services (54133)

SIC

Services-Engineering Services (8711)

akta.pro industry

PRIMARYIMABALAO

MRO Engineering, Technical Publications & CAMO Support

Industrials, Manufacturing & Construction/Aerospace & Defense Manufacturing/Aerospace MRO, Repair & Overhaul (Aftermarket)

SECONDARYTLAKAJAI

Modification, Retrofit & Engineering (STC, Avionics Upgrades, Conversions)

Transportation & Logistics/Vehicle & Equipment Maintenance, Repair & Services (MRO)/Aircraft Maintenance, Repair & Overhaul (Aviation MRO)

SECONDARYIMABALAJ

NDT/Inspection & Testing Services (Aviation)

Industrials, Manufacturing & Construction/Aerospace & Defense Manufacturing/Aerospace MRO, Repair & Overhaul (Aftermarket)

Keywords

• Aviation engineering services
• FAA DER DAR consulting
• Aircraft documentation services
• Airworthiness certification support
• Aircraft technical support

Headquarters

HQ city

Tampa

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Service Call Fees: Chargeable phone or video service calls with quoted minimum charges for prior approval and payment. Service Calls are subject to minimum charges as quoted. All scheduled Service Calls may be cancelled without prior notification for non-payment. Minimum Service Call payments collected are not subject to refunds.
2. General Inquiry Calls: No-charge phone or video calls to discuss service requirements. May be subject to service charges as determined and upon notification by 121 Engineering Solutions.
3. On-Site Support: On-site service calls quoted separately for prior approval
4. Contractor Hourly/Per-Job Compensation: Independent contractors quote hourly or per-job rates for customer jobs or call support offered by 121 Engineering Solutions, subject to acceptance. Sales commissions available for selling services.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

121 Engineering Solutions provides aviation engineering consulting services delivered by FAA Designated Engineering Representatives (DERs) and Designated Airworthiness Representatives (DARs) to airlines, air cargo operators, business jet operators, MROs, and aviation suppliers. Core service lines are Engineering Services (STCs, PMAs, ADs, SBs, EOs, Repair Approvals, Damage Tolerance), Documentation Services for aircraft records and regulatory compliance, and specialized services including fuel treatment programs, in-flight vibration testing, livery paint and markings support, and flammability testing and reporting across multiple ATA Chapters.

Product overview

121 Engineering Solutions offers a unified portfolio of aviation engineering consulting services, combining specialized FAA DER/DAR expertise with comprehensive technical support for airlines, air cargo operators, business jets, MROs, and aviation suppliers. The core offerings include Engineering Services (covering STCs, PMAs, ADs, SBs, and EOs), Documentation Services, and Regulatory Compliance support. These are complemented by specialized services including Aircraft Fuel Treatment Programs, In-Flight Vibration Testing and Analysis, Aircraft Livery Paint and Markings Support, and Flammability Testing and Reporting. All services span extensive ATA Chapter coverage and are delivered through phone/video consultations, off-site support, and on-site assistance.

Differentiator

Problem solved

Functional benefit

Products and services

• Engineering Services

Quantifiable outcome

• Part and part repair programs developed by 121 Engineering Solutions have generated millions in new sales revenues for aviation suppliers, with millions gained in maintenance and reliability cost savings by aircraft operators

Named customers5 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• HEICO: Aerospace parts and services company with significant FAA PMA, DER, and repair-station activity through its HEICO Aerospace and HEICO Repair Group segments. Overlaps with 121 on supplier-side PMA/STC and certification programs.
• AGC Aerospace & Defense: Broader aerospace engineering services and MRO platform supporting commercial and defense customers with certification, modifications, and technical services. Larger and more diversified than 121, but directly overlapping on FAA certification and engineering offerings.
• FlightSafety International: Aviation training and services company adjacent to 121's compliance and documentation expertise, particularly around flight operations, regulations, and aviation professional services for airlines and operators.
• Aviation Technical Services (ATS): Major third-party MRO offering heavy maintenance, engineering, and modification services to airlines. Comparable to 121's MRO customer support and STC/engineering-order work, but at substantially larger scale.
• Precision Aviation Group (PAG): Multi-brand aerospace MRO and engineering services provider serving airlines, MROs, and operators. Comparable to 121 in technical engineering and DER-style support, but with a much broader parts/MRO footprint.

Direct peers

• JANA Engineering: Aviation engineering services firm providing FAA DER support, structural and systems engineering, and certification work to airlines, MROs, and OEMs. Closely comparable to 121 in service mix, customer base, and professional-services delivery model.
• Carleton Engineering Services: Aviation-focused engineering services firm providing FAA DER consulting, structural substantiation, and PMA/STC support. Comparable in scale, certification focus, and customer profile.
• AeroStar Engineering: Specialist DER consulting firm delivering FAA engineering, certification, and airworthiness services across multiple ATA chapters. Direct competitor for the same airline, MRO, and supplier certification work that 121 Engineering Solutions performs.
• Aerospace Engineering Services (AES): Aerospace engineering consultancy offering structural analysis, DER services, and certification support to airlines and MROs. Overlaps with 121's FAA DER/DAR and ATA-chapter engineering offerings.

Regional players

• Avmax Aviation Services: Regional aviation MRO and engineering services provider with strong Part 121/135 support capabilities. Comparable to 121 on engineering orders and documentation, primarily competing in North American airline and business aviation markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/121-engineering-solutions

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 121 Engineering Solutions