If you wish to contribute or participate in the discussions about articles you are invited to join SKYbrary as a registered user


BELL B-412

From SKYbrary Wiki

Name B-412
Manufacturer BELL
Wing Rotary
WTC Light
Type code H2T
Engine Turboshaft
Engine count Multi
Mass group 2

Manufacturered as:

AGUSTA Griffon
AGUSTA AB-412 Griffon
BELL Sentinel
BELL 412 Sentinel
BELL 412 Arapaho
BELL 412
BELL Arapaho (412)
BELL Griffon
BELL Griffin
BELL CH-146 Griffon

BELL B-412

BELL B-412


The Bell 412 is a medium lift, utility helicopter manufactured by Bell Helicopter. It is a further development of the Bell 212 model, the major difference being the composite four-blade main rotor.

Technical Data

Wing span 14 m45.932 ft <br />
Length 17.1 m56.102 ft <br />
Height 4.6 m15.092 ft <br />
Powerplant 2 x Pratt & Whitney Canada PT6T-3BE Twin-Pac turboshafts, 900 shp (671 kW) each.
Engine model Pratt & Whitney Canada PT6T

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 1350 kts IAS kts IAS kts MACH TAS 122 kts MACH IAS kts IAS kts Vapp (IAS) kts
Distance m ROC ft/min ROC ft/min ROC ft/min ROC ft/min MACH ROD ft/min ROD ft/min MCS kts Distance m
MTOW 53975,397 kg <br />5.397 tonnes <br /> kg Ceiling FL200 ROD ft/min APC
WTC L Range 402402 nm <br />744,504 m <br />744.504 km <br />2,442,598.427 ft <br /> NM

Accidents & Serious Incidents involving B412

  • B412, vicinity Karlsborg Sweden, 2003 (On 25 March 2003, the crew of a Bell 412 lost control of the aircraft as a result of pilot mishandling associated with the development of a Vortex Ring State.)