By Wing Commander 
Introduction to the Canadair CRJ Series 705 Jet
The Canadair CRJ Series 705 Jet, a member of the Bombardier CRJ family, represents a significant advancement in regional jet aviation. This aircraft was specifically designed to meet the needs of regional airlines, offering a balance between efficiency, performance, and passenger comfort. Manufactured between 2002 and 2021, the CRJ705 was developed to fill a niche in the market for regional jets that could accommodate up to 75 passengers while maintaining operational efficiency and cost-effectiveness. This article delves into the specifications, performance, and historical context of the CRJ705, highlighting its role in the evolution of regional air travel.
General Overview and Historical Context
The CRJ705 is part of the larger CRJ700 series, which was developed by Bombardier Aerospace as an extension of their earlier CRJ100 and CRJ200 models. The CRJ series was initially conceived to provide airlines with a versatile option for short to medium-haul routes, combining the reliability of previous models with enhanced passenger capacity and improved aerodynamics. The CRJ705 variant was introduced in response to specific market demands, particularly from Air Canada Jazz, which required an aircraft that complied with pilot contract scope clauses limiting passenger numbers to 75[2][3].
Manufacturer and Production
- Manufacturer: Bombardier Aerospace
- Country: Canada
- Production Years: 2002 to 2021
- ICAO Code: CRJ9
- Price: Approximately USD $29 million at the time of production
The CRJ705 was manufactured in Canada by Bombardier Aerospace, a company renowned for its innovation in the aerospace sector. The aircraft’s development was part of Bombardier’s strategy to capture a significant share of the regional jet market by offering an aircraft that could bridge the gap between smaller commuter planes and larger narrow-body jets[1][2].
Design and Configuration
The design of the CRJ705 is based on the CRJ900 airframe but is limited to 75 seats due to regulatory requirements. This configuration includes:
- Seats (Economy): 75
- Business Class Seats: None
- First Class Seats: None
The cabin layout is optimized for regional travel, providing sufficient comfort for passengers while maintaining operational efficiency. The aircraft features a spacious cabin with dimensions designed to enhance passenger experience:
- Cabin Height: 1.89 meters (6.20 feet)
- Cabin Width: 2.57 meters (8.43 feet)
- Cabin Length: 21.16 meters (69.42 feet)
These dimensions ensure that passengers have adequate space during their journey, a crucial factor in enhancing customer satisfaction on regional flights[3].
Performance Specifications
The performance capabilities of the CRJ705 make it a competitive choice for airlines operating regional routes:
- Avionics: Rockwell Collins ProLine 4
- Engines: Two General Electric CF34-8C5 turbofan engines
- Thrust: Each engine provides 14,510 pound-force
- Maximum Cruise Speed: 470 knots (870 km/h)
- Travel Range: 1,553 nautical miles (2,876 kilometers)
- Fuel Economy: Approximately 0.69 nautical miles per gallon (0.338 kilometers per liter)
- Service Ceiling: 41,000 feet
- Rate of Climb: 3,500 feet per minute (17.78 meters per second)
These specifications highlight the aircraft’s ability to perform efficiently over short to medium distances while maintaining cost-effective fuel consumption[1][3].
Weight and Dimensions
The weight and dimensional characteristics of the CRJ705 are tailored to optimize its performance within its operational range:
- Maximum Takeoff Weight: 38,330 kg (84,502 lbs)
- Maximum Landing Weight: 34,065 kg (75,100 lbs)
- Maximum Payload: 10,247 kg (22,591 lbs)
- Fuel Tank Capacity: 2,349 gallons (8,892 liters)
The aircraft’s exterior dimensions further enhance its aerodynamic efficiency:
- Exterior Length: 36.2 meters (118.76 feet)
- Tail Height: 7.5 meters (24.61 feet)
- Fuselage Diameter: 2.7 meters (8.86 feet)
- Wing Span with Blended Tips: 24.9 meters (81.69 feet)
These design elements contribute to the aircraft’s ability to operate effectively on regional routes with varying airport infrastructure[1][4].
In summary, the Canadair CRJ Series 705 Jet is a testament to Bombardier’s commitment to innovation in regional aviation. Its design and performance characteristics make it an ideal choice for airlines seeking an efficient and reliable solution for short-haul travel.
Citations:
[1] https://www.airlines-inform.com/commercial-aircraft/bombardier-crj-705.html
[2] https://en.wikipedia.org/wiki/Bombardier_CRJ700_series
[3] https://www.modernairliners.com/bombardier-crj
[4] https://www.easa.europa.eu/en/downloads/111186/en
Design Evolution and Technical Specifications
The Canadair CRJ Series 705 Jet stands out for its unique design and technical specifications, which are a blend of innovation and practicality tailored for regional air travel. This section delves into the detailed design elements, technical specifications, and the evolutionary path that led to the creation of the CRJ705.
Evolutionary Background
The CRJ705 emerged from the need to adapt to market demands and regulatory constraints. It was developed as a variant of the CRJ900, with specific modifications to comply with pilot union agreements at Air Canada, which limited regional jets to a maximum of 75 seats. This strategic decision allowed Bombardier to cater to specific airline needs while maintaining the core strengths of the CRJ series.
- Launch Customer: Air Canada Jazz
- First Flight: 2005
- Configuration: Initially configured with 10 business class and 65 economy class seats[4].
Technical Specifications
Dimensions and Weight
The CRJ705 features dimensions that optimize both passenger comfort and operational efficiency:
- Length: 36.2 meters (118.76 feet)
- Wingspan: 24.9 meters (81.69 feet) with blended winglets that enhance aerodynamic efficiency
- Height: 7.5 meters (24.61 feet)
- Wing Area: Approximately 68.6 square meters[1]
- Maximum Takeoff Weight: 38,330 kg (84,502 lbs)
- Operating Empty Weight: Approximately 21,430 kg[1]
These dimensions are designed to ensure the aircraft can operate efficiently in diverse airport environments, from major hubs to smaller regional airports.
Engine and Performance
The CRJ705 is powered by two General Electric CF34-8C5 turbofan engines, each providing a thrust of approximately 13,120 pounds-force[1][2]. This engine choice is consistent with Bombardier’s focus on reliability and fuel efficiency:
- Maximum Cruise Speed: 470 knots (870 km/h)
- Service Ceiling: 41,000 feet
- Rate of Climb: 3,500 feet per minute
- Range with Maximum Payload: Up to 3,730 kilometers[1]
The aircraft’s performance is further enhanced by its advanced avionics system, the Rockwell Collins ProLine 4, which provides pilots with state-of-the-art navigation and communication tools.
Fuel Efficiency and Capacity
Fuel efficiency is a critical factor for regional jets operating on shorter routes. The CRJ705 is designed to maximize fuel economy without compromising performance:
- Fuel Economy: Approximately 0.69 nautical miles per gallon
- Fuel Tank Capacity: 8,892 liters (2,349 gallons)
These specifications allow airlines to optimize their operational costs while maintaining a competitive edge in terms of range and payload capacity.
Cabin Configuration and Comfort
The interior of the CRJ705 is configured exclusively for economy seating, reflecting its primary role as a regional jet:
- Passenger Capacity: Up to 75 seats in a single-class configuration
- Cabin Height: 1.89 meters (6.20 feet)
- Cabin Width: 2.57 meters (8.43 feet)
The cabin design focuses on maximizing passenger comfort within the constraints of a regional jet’s operational requirements. The use of blended winglets not only improves aerodynamic performance but also contributes to a quieter cabin environment by reducing turbulence.
Regulatory Compliance and Modifications
In recent developments, regulatory bodies such as the FAA have mandated modifications to prevent potential interference from new technologies like 5G networks. These modifications include installing radio frequency bandpass filters to ensure safe operations during critical phases of flight such as landing[3].
The CRJ705’s design reflects Bombardier’s commitment to adapting its aircraft to meet evolving technological and regulatory landscapes while providing reliable service in the competitive regional aviation market.
Citations:
[1] https://www.airlines-inform.com/commercial-aircraft/bombardier-crj-705.html
[2] https://www.airteamimages.com/bombardier-crj_c-fnjz_air-canada-jazz_22204
[3] https://www.ch-aviation.com/news/144530-us-to-order-crj-modifications-to-prevent-5g-interference
[4] https://en.wikipedia.org/wiki/Bombardier_CRJ700_series
Operational Aspects and Market Impact of the CRJ705
The Bombardier CRJ705, part of the CRJ700 series, has been a significant player in the regional jet market. This section explores the operational aspects of the CRJ705, including its market impact, regulatory considerations, and the modifications required to meet modern aviation standards.
Operational Performance and Capabilities
The CRJ705 is designed for optimal performance in regional aviation, where efficiency and reliability are paramount. Its operational capabilities are enhanced by several key features:
- Engine Performance: Equipped with two General Electric CF34-8C5 turbofan engines, each delivering 13,120 pounds-force of thrust. These engines are known for their reliability and efficiency, contributing to the aircraft’s strong operational performance.
- Cruise Speed: The aircraft cruises at approximately 470 knots (870 km/h), making it suitable for short to medium-haul routes.
- Range: With a range of up to 3,730 kilometers, the CRJ705 can comfortably handle regional flights without frequent refueling stops[1][4].
These capabilities make the CRJ705 an attractive option for airlines looking to optimize their regional operations.
Regulatory Considerations and Modifications
In recent years, regulatory bodies such as the FAA have introduced new requirements to ensure the continued safety and efficiency of aircraft like the CRJ705. One significant regulatory update involves modifications to prevent interference from 5G networks:
- 5G Interference Mitigation: The FAA has mandated the installation of radio frequency bandpass filters on CRJ aircraft to prevent potential interference with radio altimeters caused by 5G signals. This modification is essential for maintaining safe operations during critical phases such as landing[3].
These regulatory updates underscore the importance of adapting existing aircraft to meet evolving technological challenges.
Market Impact and Airline Adoption
The CRJ705 has had a notable impact on the regional jet market. It was specifically designed to meet the needs of airlines operating under contractual limitations on passenger capacity:
- Market Niche: The aircraft’s 75-seat configuration allowed airlines like Air Canada Jazz to comply with pilot union agreements while still offering competitive service on regional routes[2].
- Adoption by Airlines: The CRJ705 has been adopted by several major airlines, primarily in North America, due to its balance of capacity and efficiency. Its introduction allowed airlines to optimize fleet utilization and expand their service offerings without exceeding regulatory passenger limits.
The CRJ705’s market success can be attributed to its ability to meet specific airline needs while maintaining high operational standards.
Technological Advancements
Bombardier’s focus on technological innovation is evident in the design and features of the CRJ705:
- Advanced Avionics: The Rockwell Collins ProLine 4 avionics suite provides pilots with comprehensive navigation and communication tools, enhancing operational safety and efficiency.
- Cabin Enhancements: The aircraft includes features such as improved cabin pressurization systems and noise reduction technologies, contributing to a more comfortable passenger experience[5].
These advancements highlight Bombardier’s commitment to integrating cutting-edge technology into their aircraft designs.
The Bombardier CRJ705 has played a pivotal role in shaping regional aviation by offering a blend of efficiency, reliability, and passenger comfort. Its ability to meet specific market demands while adapting to regulatory changes ensures its continued relevance in the aviation industry. As airlines continue to seek cost-effective solutions for regional travel, the CRJ705 remains a valuable asset in their fleets.
Citations:
[1] https://en.wikipedia.org/wiki/Bombardier_CRJ700_series
[2] https://tc.canada.ca/en/aviation/commercial-air-services/operational-evaluation-reports/bombardier-crj-series
[3] https://www.ch-aviation.com/news/144530-us-to-order-crj-modifications-to-prevent-5g-interference
[4] https://www.airlines-inform.com/commercial-aircraft/bombardier-crj-705.html
[5] https://www.mhirj.com/themes/bca/pdf/Bombardier_CRJ_Series_Brochure.pdf
[6] https://tc.canada.ca/en/aviation/commercial-air-services/operational-evaluation-reports/crj-series
Future Prospects and Legacy of the CRJ705
As the aviation industry continues to evolve, the legacy of the Bombardier CRJ705 remains significant. This final section examines the future prospects of the CRJ705, its impact on regional aviation, and the lessons learned from its operational history.
Future Prospects
While Bombardier has ceased production of the CRJ series as of 2021, the aircraft continues to be a vital part of many airline fleets. Its future prospects are influenced by several factors:
- Continued Demand for Regional Jets: The demand for regional jets like the CRJ705 persists, driven by the need for efficient, short-haul connectivity. Airlines are likely to continue utilizing these aircraft due to their proven reliability and cost-effectiveness.
- Maintenance and Upgrades: As airlines extend the operational life of their CRJ705 fleets, ongoing maintenance and potential upgrades will be critical. This includes retrofitting aircraft with new technologies to meet regulatory requirements and improve fuel efficiency.
- Secondary Markets: The CRJ705 may find a secondary market in regions where demand for regional connectivity is growing. This could include emerging markets in Asia and Africa where infrastructure development supports increased air travel.
These factors suggest that while new production has ceased, the CRJ705 will remain relevant in the aviation landscape for years to come.
Impact on Regional Aviation
The CRJ705 has had a lasting impact on regional aviation by setting standards for efficiency and performance:
- Operational Efficiency: The aircraft’s design prioritizes fuel efficiency and low operating costs, making it a benchmark for regional jet performance.
- Passenger Experience: With its comfortable cabin configuration and quiet operation, the CRJ705 has contributed to enhancing passenger experience on regional flights.
- Market Adaptability: The flexibility of the CRJ705’s design has allowed airlines to adapt to changing market conditions, such as scope clause limitations and evolving passenger demands.
These contributions underscore the aircraft’s role in shaping modern regional air travel.
Lessons Learned
The development and operation of the CRJ705 offer valuable lessons for future aircraft design and airline operations:
- Regulatory Compliance: The necessity of adapting to regulatory changes, such as those related to 5G interference, highlights the importance of proactive compliance strategies in aircraft design.
- Market Responsiveness: Bombardier’s ability to tailor the CRJ705 to specific market needs demonstrates the value of responsive product development in maintaining competitive advantage.
- Sustainability Considerations: As environmental concerns become increasingly prominent, lessons from the CRJ705’s fuel-efficient design can inform future efforts to reduce aviation’s carbon footprint.
These insights provide a framework for addressing future challenges in aviation technology and operations.
Conclusion
The Bombardier CRJ705 has left an indelible mark on regional aviation through its innovative design and operational success. While its production has ended, its legacy endures in the continued use by airlines worldwide. As the industry looks toward more sustainable and technologically advanced solutions, the principles embodied by the CRJ705 will continue to influence future developments in regional jet aviation.