Avro RJ
The Avro RJ is a modernized evolution of the BAe 146 regional jet, featuring upgraded Honeywell LF 507 engines and a digital flight deck. While it maintains the unique four-engine high-wing configuration of its predecessor, it introduced improved reliability and lower operating costs for short-haul operations.
Fleet Safety Record
25Fleet statistics cover the RJ70, RJ85, and RJ100 variants which utilized the ARINC 700 digital avionics suite.
In BlackBoxWiki Archive
Digital Avionics and Systems Integration
The primary distinction of the Avro RJ variant is the transition from the analog systems of the BAe 146 to a digital avionics suite. This included a Flight Management System (FMS) and digital engine controls (FADEC) for the Honeywell LF 507-1F powerplants. These upgrades were intended to reduce pilot workload and improve navigational precision during complex arrivals at noise-sensitive urban airports.
Operational Profile and STOL Capabilities
The Avro RJ retained the Short Takeoff and Landing (STOL) performance of the original airframe, utilizing a large rear-mounted airbrake rather than thrust reversers. This design choice simplifies engine maintenance but requires precise airspeed management during the flare. The four-engine redundancy was marketed as a safety feature for operations in mountainous terrain or over water, though it increased the complexity of fuel and hydraulic system monitoring.
Fuel Management and Human Factors
Investigation into the type's most significant loss highlighted the critical nature of fuel planning in the RJ series. Because the aircraft lacks thrust reversers and relies on four engines, its fuel burn is higher than comparable twin-engine regional jets. This necessitates rigorous adherence to reserve requirements, particularly when operating at the edge of the airframe's range envelope.
Notable Accidents
- Crossair Flight 3597· 2001An RJ100 crashed into a forest during a low-visibility approach to Zurich, resulting from the pilot descending below the minimum descent altitude without visual contact with the runway.
- LaMia Flight 2933· 2016An RJ85 suffered total power loss due to fuel exhaustion near Medellin, Colombia, after the crew failed to declare an emergency despite insufficient reserves for the flight duration.
- Turkish Airlines Flight 634· 2003An RJ100 impacted terrain during a missed approach in heavy fog at Diyarbakir Airport, attributed to controlled flight into terrain (CFIT) following the crew's decision to continue the approach below safety limits.
Recurring Causal Patterns
- Controlled flight into terrain (CFIT) during non-precision approaches in low visibility
- Inadequate fuel reserve management on long-range ferry or charter missions
- Crew failure to adhere to Minimum Descent Altitudes (MDA) during instrument arrivals
Regulatory & Industry Response
- Mandatory installation of Enhanced Ground Proximity Warning Systems (EGPWS) across the regional fleet
- Revised training requirements for fuel planning and emergency declarations under ICAO standards
- Updated flight manual procedures for low-visibility operations and stabilized approach criteria
Top Causes in Archive
Case Files in Archive
Verdict
The Avro RJ is a robust regional platform whose safety record is primarily defined by operational human factors rather than inherent mechanical flaws. While the digital upgrades improved situational awareness, the aircraft remains sensitive to fuel planning errors and requires strict adherence to instrument approach procedures.