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From SKYbrary Wiki
Name AW-139
Wing Rotary
Position Five-blade main rotor
Tail Five-blade tail rotor
WTC Light
Type code H2T
Engine Turboshaft
Engine count Multi
Position In fuselage
Landing gear Tailwheel retractable
Mass group 3

Manufacturered as:





The AgustaWestland AW139 is a 15-seat medium sized twin-engined helicopter manufactured by AgustaWestland. Originally designed and developed jointly by Agusta and Bell Helicopters and marketed as the Agusta-Bell AB139, it renamed the AW139 when Bell withdrew from the project.

Technical Data

Wing span 13.8 m45.276 ft
Length 13.53 m44.39 ft
Height 4.95 m16.24 ft
Powerplant 2 x Pratt & Whitney Canada PT6C-67C free turbine turboshaft engine, 1142 kW (1531 hp) each.
Engine model Pratt & Whitney Canada PT6

Performance Data

Take-Off Initial Climb
(to 5000 ft)
Initial Climb
(to FL150)
Initial Climb
(to FL240)
MACH Climb Cruise Initial Descent
(to FL240)
(to FL100)
Descent (FL100
& below)
V2 (IAS) kts IAS kts IAS kts IAS kts MACH TAS 157 kts MACH IAS kts IAS kts Vapp (IAS) kts
Distance m ROC 2000 ft/min ROC ft/min ROC ft/min ROC ft/min MACH ROD ft/min ROD ft/min MCS kts Distance m
MTOW 60006,000 kg
6 tonnes
Ceiling FL120 ROD ft/min APC
WTC L Range 400400 nm
740,800 m
740.8 km
2,430,446.196 ft

Accidents & Serious Incidents involving A139

  • A139 / A30B, Ottawa Canada, 2014 (On 5 June 2014, an AW139 about to depart from its Ottawa home base on a positioning flight exceeded its clearance limit and began to hover taxi towards the main runway as an A300 was about to touch down on it. The TWR controller immediately instructed the helicopter to stop which it did, just clear of the runway. The A300 reached taxi speed just prior to the intersection. The Investigation attributed the error to a combination of distraction and expectancy and noted that the AW139 pilot had not checked actual or imminent runway occupancy prior to passing his clearance limit.)
  • A139, vicinity Sky Shuttle Heliport Hong Kong China, 2010 (On 3 July 2010, an AW 139 helicopter was climbing through 350 feet over water two minutes after take off when the tail rotor fell off. A transition to autorotation was accomplished and a controlled ditching followed. All on board were rescued, some sustained minor injuries. The failure was attributed entirely to manufacturing defects but no action was taken until two similar accidents had occurred in Qatar (non-fatal) and Brazil (fatal) the following year and two Safety Recommendations had been issued from this Investigation after which a comprehensive review of the manufacturing process resulted in numerous changes monitored by EASA.)
  • A320 / A139 vicinity Zurich Switzerland, 2012 (On 29 May 2012, a British Airways Airbus A320 departing Zürich and in accordance with its SID in a climbing turn received and promptly and correctly actioned a TCAS RA 'CLIMB'. The conflict which caused this was with an AW 139 also departing Zürich IFR in accordance with a SID but, as this aircraft was only equipped with a TAS to TCAS 1 standard, the crew independently determined from their TA that they should descend and did so. The conflict, in Class 'C' airspace, was attributed to inappropriate clearance issue by the TWR controller and their inappropriate separation monitoring thereafter.)