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COMAC C909 / ARJ21 Family Materials and Structural Design

COMAC C909 / ARJ21 Family structural design balances weight, fatigue life, corrosion resistance, repairability, production cost, and the technology level of its generation.

01

Overview

COMAC C909 / ARJ21 Family structural design balances weight, fatigue life, corrosion resistance, repairability, production cost, and the technology level of its generation.

Advantages

  • Supports regional connectivity in China.
  • Domestic support ecosystem is important for Chinese airline networks.
  • C909 branding helps align the aircraft with COMAC's newer naming system.

Limitations

  • International operator base is limited.
  • Cabin and route economics are closer to regional jets than larger single-aisle aircraft.
02

Identification

Key terms

Technical features

  • Connects model suffixes, airline maintenance strategy, and performance limits.
  • Important for aircraft identification and fleet comparison.

Advantages

  • Helps explain range, payload, noise, and fuel-burn differences.

Limitations

  • Public data may omit thrust derates or later engine swaps.
03

Related entries

04

Technical notes

Technical notes

  • Composite usage, aluminium-lithium structures, and systems integration should be checked by variant and production period.
  • The commercial passenger branch is represented by ARJ21-700 / C909 aircraft.
  • The type is associated with GE CF34-10A-family engines.

Cabin configurations

Format: F8/J42/W28/Y216; F=First, J=Business, W=Premium Economy, Y=Economy

Air China

Y90

AeroLOPA source: Air China C909 / ARJ21-700, normalized cabin configuration Y90.

AeroLOPA

China Southern

Y90

AeroLOPA source: China Southern C909 / ARJ21-700, normalized cabin configuration Y90.

AeroLOPA
06

Sources

Wikipedia: COMAC C909 / ARJ21 Family