R&R DOA
Photo

SCOPE & CUSTOMERS.

MODIFICATIONS & REPAIRS
​
EASA DOA.21J.749 / EASA POA 21G
  • IN SERVICE AIRCRAFT
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR DASH-8
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR EMBRAER E190
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR ATR 42/72
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR A320
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR A330/340
  • CERTIFICATION PROJECTS
  • DOA APPROVAL CYCLE
  • PART-21J
    • PART-IS
    • NPA 2025-11
  • SCOPE & CUSTOMERS
  • CERTIFICATE
  • NEWS
  • FAQ
  • CONTACT
  • AIRWORTHINESS ENQUIRIES
Our DOA (Design Organisation Approval) EASA Part 21J authorises us
to design and approve modifications and repairs for TC Holders, OEMs, operators, lessors and MROs.

EASA CERTIFICATION PANELS AND DISCIPLINES 
TITLE - PANEL NUMBER
DISCIPLINES: AREAS OF EXPERTISE
STRUCTURES - Panel 3
- Loads, weight and balance
​- Static Strength
HYDROMECHANICAL SYSTEMS - ​Panel 4
- Landing gear systems and wheels, tyres & brakes [ATA 320] 
ELECTRICAL SYSTEMS - ​Panel 5
-Lights
-In-Flight Entertainment (IFE) and power outlets (for passengers or crew)
AVIONIC SYSTEMS - ​Panel 6
- Autoflight systems
  (Includes auto-pilot, auto-throttle, flight guidance, flight envelope, stability, etc.)
- Communications, navigation & surveillance
  (Includes air data systems, datalink, transponder, radio, environment surveillance systems  
  (TCAS, TAWS, Weather Radar …), etc.)
- Flight Management System (FMS) 
- Indicating, alerting & recording systems, diagnostic and maintenance systems
​  (Includes display systems, instrument and control panel, recorders, vibration/vehicle
​  monitoring system, general computers, central warning systems, maintenance systems...)
- Integrated Modular Avionics (IMA) (Includes IMA resources, databuses)
- Cybersecurity 
POWERPLANT INSTALLATION
​AND FUEL SYSTEMS -
 Panel 7
- Engine, propeller and APU installation
​- Fuel systems 
- Fuel tank inerting 
- Extended Diversion Time Operation (EDTO) / Extended Twin Engine Operations (ETOPS) 
- Fire protection (unpressurised areas) 
CABIN SAFETY - ​Panel 11
- Cabin Installation (including Emergency Medical Systems, VIP interiors,
​  Crew Rest Compartments, Courier Compartments, etc.)
- Cargo Compartments (installation & restraint)
- Fire Protection - pressurised areas (active and passive)
- Occupant evacuation
- Internal and external placards and markings
ICA - Panel 14
- Instructions for Continued Airworthiness 
​- Maintenance Review Board (MRB) process

​​Changes & Repairs under DOA
VIP CABIN
CABIN RETROFIT
MISSION EQUIPMENT INSTALLATION
CABIN REPAIR
PLACARDS & SIGNS
EXTERNAL LIVERIES
​PAX TO FREIGHTER CONVERSION 

Examples of projects carried out under EASA DOA.21J.749  
  • STC 0 passenger on ATR42/72 (can be sold elsewhere)
  • Trash compactor repair parts (product owned by R&R)
  • Oven replacement in galley
  • Certification of Spare Landing gears bushings on A320 series and A330 (300 parts approved)
  • Nameplates, relocation of safety equipment...
  • Nacelles repair
  • Many External liveries (2 to 4 per month)
  • Removal of cargo compartment STC
  • Life vest pouches redesign
  • Yoke button replacement, ...
  • Many Equipment installation, calculation of furniture installation...
  • Seat relocation
  • Repair on landing gear
  • Landing gear bushing
  • Modifications on ATR, Modifications on VIP aircrafts
  • A330 door insulation cover
  • External liveries + stickers kits B737
  • External livery B737
  • Placards & markings
  • Installation of flag holder on H225, external scheme on H225, Prepare installation of flooring, seats, avionics, external livery, mision systems à 100 changes studied on 9 H225
  • Many A319 to A321 and B757 installations of loose equipment in overhead bin, installation of IFE wifi box in OHB on A320,
  • A340 rack for loose equipment in OHB with Electrical power provision
  • Opérators: Installation of work station on EC135 and AS350
          Installation of FLIR on EC135 and AS350
          STC for Installation of Martin becker seats on EC135 and AS350
  • Operator: external strobe light installation on
CONTACT US
R&R DOA
IN SERVICE AIRCRAFT
CERTIF PROJECTS
​DOA APPROVAL CYCLE
​PART 21J
SCOPE & CUSTOMERS
​
CERTIFICATE
​
NEWS

CONTACT
​AIRWORTHINESS ENQUIRIES
SERVICE BULLETIN
​HALON FREE INSTALLATION SB FOR DASH-8
​HALON FREE INSTALLATION SB FOR EMBRAER E190
​HALON FREE INSTALLATION SB FOR ATR 42/72
​HALON FREE INSTALLATION SB FOR A320
​HALON FREE INSTALLATION SB FOR A330/340
ALTERNATE PARTS EPA PMA
LAVATORIES WATER FAUCET
PARKING BRAKE
RINSE VALVE
​TRASH COMPACTOR MOTOR


EXPERTISES
MODS & REPAIRS
STCs
CABIN LAYOUTS
​EXTERNAL LIVERIES


SCOPE
​STRUCTURE
CABIN

HYDRAUMECHANICAL
AVIONIC
​SYSTEMS
ICA


​R&R DOA, an R&R Group Company - EASA DOA.21J.749
R&R CONSULTING - R&R LEARNING - IMPROVE AERO TECHNOLOGIES

​© 2025 R&R DOA - All rights reserved - Legals - Privacy Policy - ​By zeboiteaidees
  • IN SERVICE AIRCRAFT
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR DASH-8
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR EMBRAER E190
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR ATR 42/72
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR A320
    • HALON FREE FIRE EXTINGUISHER INSTALLATION SB FOR A330/340
  • CERTIFICATION PROJECTS
  • DOA APPROVAL CYCLE
  • PART-21J
    • PART-IS
    • NPA 2025-11
  • SCOPE & CUSTOMERS
  • CERTIFICATE
  • NEWS
  • FAQ
  • CONTACT
  • AIRWORTHINESS ENQUIRIES