Group : Passenger Regional Jets
Status : Active
Also Known As : EMB 145 RS/AGS, ERJ 135, ERJ 140, ERJ 145 LR, ERJ 145 XR, P-99, R-99 B
Origin : Brazil
Contractor : Embraer
Initial Operational Capability (IOC) : 1996
Total Production : 932

The Embraer ERJ 145 is a single aisle, cabin pressurized, twin-engine, regional jetliner characterized by a low operating cost. The aircraft is available in three configurations ER-Extended Range, LR-Long Range and XR Extra Long Range. The successful ERJ 135/145 family of commercial airplanes is composed of three variants with their seating capacity varying from 37 to 50 seats. The ERJ 135 has 37 seats, the ERJ 140 accommodates 44 seats and the ERJ 145 50 seats. The first ERJ 145 was delivered in December 1996, since then more than 700 units have been ordered. These aircraft have logged more than six million flight hours around the globe.

The ERJ regional jet has been adapted to military roles such as Airborne Early Warning and Control (AEW&C) under the EMB 145 AEW&C designation, also known as the R-99 A. EMB 145 AEW&C integrates Ericsson Microwave Erieye electronically scanned array sensor, IFF secondary radar and a highly automated network command and control system. Intelligence, Surveillance and Reconnaissance (ISR) and Signals Intelligence (SIGINT) applications under the EMB 145 RS/AGS designation, also referred to as R-99 B. EMB 145 RS/AGS is operated by Brazil within the Amazon Surveillance System (SIVAM) program which started in 1997. EMB 145 aircraft adapted for maritime patrol and anti-submarine warfare receives the P-99 designation.

In August 2004, the Embraer ERJ 145 low operating costs commercial aircraft was selected by the US Army as the airborne platform for the ACS (Aerial Common Sensor) program. The aircraft will be outfitted with the advanced equipment related to the ACS to perform network-centric ISR missions in support of US military forces. Embraer was a part of the Lockheed-Martin-led team for the ACS contract. Thereafter, the ACS program was cancelled.

Embraer and the Indian Defense, Research and Development Organization (DRDO) signed a Memorandum of Understanding (MoU) to support the development of a new Indian Air Force Airborne Early Warning and Control (AEW&C) system. Embraer and the Indian DRDO will jointly develop the new system based on the EMB 145 Intelligence, Surveillance and Reconnaissance (ISR) platform, an ERJ 145 jetliner application. A contract for three of such aircraft was expected for the development phase with further orders following after development completion.

Group : Airborne Early Warning Aircrafts
Status : Active
Also Known As : E-99 (Brazilian Air Force), E-99M, EMB 145 AEW&C (early designation), EMB-145H (Hellenic Air Force), Embraer RJ-145SA (early designation), ERJ 145 Netra, R-99 A
Origin : Brazil
Contractors : Embraer, Saab Microwave Systems
Initial Operational Capability (IOC) : 1999
Total Production : 12

The Embraer ERJ 145 AEW&C, originally known as RJ-145SA or R-99 A, is an affordable Airborne Early Warning and Control aircraft developed in cooperation by Embraer, airborne platform, and Ericsson Microwave (now Saab Microwave), Erieye surveillance radar system. The AEW&C aircraft key element is the Erieye active phased array side looking surveillance radar which features a detection range of up to 300 km for fighter-sized airborne targets and maritime surveillance mode. In addition the aircraft is provided with IFF secondary radar and a highly automated network command and control system. The ERJ 145 AEW&C program was launched in the late 1990s. Brazil and Greece (EMB-145H) ordered five and four such aircraft.

In February 2005, Embraer and the Indian Defense, Research and Development Organization (DRDO) signed a Memorandum of Understanding (MoU) to support the development of a new Indian Air Force Airborne Early Warning and Control (AEW&C) system. Embraer and the Indian DRDO will jointly develop the new system based on the EMB 145 Intelligence, Surveillance and Reconnaissance (ISR) platform. A contract for three of such aircraft was expected for the development phase with further orders following after development completion. The first ERJ 145 Netra was delivered to the Indian Air Force on February 15, 2017.