Eurocopter EC135

The Eurocopter EC135 is a twin-engine civil helicopter produced by Eurocopter GmbH. It is capable of flight under instrument flight rules (IFR) and is outfitted with digital flight controls. It entered service in 1996; over a thousand aircraft have been produced to date. It is widely used by police and ambulance services and for executive transport; by 2013, more than 500 EC135s were providing helicopter emergency medical services across the world. While the EC135 is primarily used by civil operators, a combat-capable military-orientated variant of the EC135, designated as the Eurocopter EC635, has also been produced.
==Variants==
*EC135 P1: Powered by two 463 kW (621 shp) Pratt & Whitney Canada PW206B (ratings correspond to Take-Off Power (TOP)). Later versions have the Center Panel Display System (CPDS). Initial maximum take-off weight (MTOW) of 2,630 kg (5,798 lbs), later raised to 2,720 kg (5,997 lbs) and then 2,835 kg (6,250 lbs).
*EC135 T1: Powered by two 435 kW (583 shp)(TOP rating) Turbomeca Arrius 2B1/2B1A/2B1A1. Later versions have the CPDS. Initial MTOW of 2,630 kg (5,798 lbs), later raised to 2,720 kg (5,997 lbs) and then 2,835 kg (6,250 lbs).
*EC135 P2: Powered by two 463 kW (621 shp) (TOP rating) Pratt & Whitney Canada PW206B2. Increased thermodynamic and mechanic OEI ratings (128% OEI torque). Replaced EC135 P1 in production in August 2001.
**EC135 P2+ (Marketing name EC135 P2i): Latest current production version with 498 kW (667 shp) PW206B2 (new power ratings based on a FADEC software upgrade), plus a 2,910 kg (6,415 lbs) MTOW upgrade, extended component time between overhaul (TBOs), and a change in the main transmission lubricating oil. Built in Germany and Spain.
**EC135 P2+ (Marketing name EC135 P2e): Marketing designation of aircraft with increased MTOW of 2,950 kg (6,504 lbs) within restricted flight envelope.
*EC135 T2: Powered by two 452 kW (606 shp) (TOP rating) Turbomeca Arrius 2B2. Increased thermodynamic and mechanic OEI ratings (128% OEI torque). Replaced EC135 T1 in production in August 2002.
**EC135 T2+ (Marketing name EC135 T2i): Latest current production version with 473 kW (634 shp) Arrius 2B2 engines (new power ratings based on a FADEC software upgrade), plus a 2,910 kg (6,415 lbs) MTOW upgrade, extended component TBOs, and a change in the main transmission lubricating oil. Built in Germany and Spain.
**EC135 T2+ (Marketing name EC135 T2e): Marketing designation of aircraft with increased MTOW of 2,950 kg (6,504 lbs) within restricted flight envelope.
*EC135 P3: Powered by two 528 kW (708 shp) (TOP rating) PW206B3 engines (new power ratings based on a FADEC software upgrade), plus a 2,980 kg (6,570 lbs) MTOW upgrade, and significant increased OEI, Cat A, and hot/high performance. Market introduction in 2014.
*EC135 T3: Powered by two 492 kW (660 shp) (TOP rating) Arrius 2B2Plus engines (new power ratings based on a FADEC software upgrade), plus a 2,980 kg (6,570 lbs) MTOW upgrade, and significant increased OEI, Cat A, and hot/high performance. Market introduction in 2014.
*Eurocopter EC635/H135M/CH-165: Military variant development to meet a Portuguese Army requirement for a fire support and medical evacuation helicopter. In service in Afghanistan, Canada, Jordan, Portugal, and Switzerland.
*TH-135: Military training variant developed from the EC135 T2+.
*ACH135: Corporate variant of the H135.
==Users==
*Argentina
**Argentine Federal Police
**Argentine National Gendarmerie
*Australia
**Australian Army
**New South Wales Police AirWing
**Queensland Police Service
**Royal Australian Navy
*Austria
**Federal Police
*Brazil
**Brazilian Air Force
**Brazilian Navy
*Canada
**Ontario Provincial Police
*Chile
**Carabineros de Chile
*Croatia
**Croatian Police
*Czech Republic
**State Police
*Gabon
**Gabonese Air Force
*Germany
**Federal Police
**German Army
**State Police
*Hungary
**HSE National Ambulance Service
*Ireland
**Garda Air Support Unit
**Irish Air Corps
*Japan
**Japan Maritime Self-Defense Force
**Japanese National Police
*Lithuania
**State Border Guard
*Morocco
**Royal Moroccan Air Force
**Royal Moroccan Gendarmerie
*Netherlands
**ANWB Medical Air Assistance
**National Police
*Nigeria
**Nigerian Air Force
*Norway
**Norwegian Police Service
*Poland
**Emergency Medical Services
**Polish Border Guard
*Romania
**Romanian Police
**SMURD
*Slovenia
**Slovenian National Police
*Spain
**Civil Guard
**National Police Corps
**Spanish Air Force
**Spanish Army Airmobile Force
*Switzerland
**Swiss Air Force
*Turkey
**Ministry of Health
*United Kingdom
**National Police Air Service
**Northern Lighthouse Board
**Police Scotland
**Police Service of Northern Ireland
**Royal Air Force
**Trinity House
*United States
**Broward County Sheriff
**Massachusetts State Police
**NASA
==See Also==
===Related Development===
*MBB Bo105
*MBB/Kawasaki BK-117
*Eurocopter EC145
*Eurocopter EC635
===Comparable Aircraft===
*AgustaWestland AW109
**AgustaWestland AW109S Grand
*Bell 427
*Bell 429
*Eurocopter AS350 Écureuil
*Eurocopter AS355 Écureuil II
*HAL Dhruv
*MD Helicopters MD Explorer
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