Bell has been made aware of cases where corrosion has been found on the freewheel assembly housing surface to the engine gearbox interface. Following investigation, it was discovered that the surface paint masking of the interface of freewheel housing 406-040-500-107 is best adapted to fit on the model 206L4 and 407. This freewheel housing when… Read more »
Bell has received field reports of cabin interior protective pads held in position with VELCRO® that disbond from the cabin structure. This is more likely to occur to those aircraft located in a hot and humid environment. To address this condition, Bell engineering has developed new interior protective pads, adding snaps to the interface to… Read more »
This Technical Bulletin introduces the procedures to upgrade the 429-001-523-101/- 103 and 429-001-532-101/-103 bellcrank assemblies to the latest configuration 429- 001-523-107 and 429-001-532-107 which utilizes corrosion resistant steel bearings. Bellcranks upgraded in accordance with this Technical Bulletin will not be affected by PART II of the Alert Service Bulletin (ASB) 429-15-21 Revision B. Customers should… Read more »
We are adopting a new airworthiness directive (AD) for Leonardo S.p.A. (Leonardo) Model AW189 helicopters. This AD requires replacing the tail plane lower fitting with an improved tail plane lower fitting. This AD was prompted by reports of cracks on the tail plane fittings of Model AW189 helicopters. The actions of this AD are intended… Read more »
We are revising Airworthiness Directive (AD) 2013-21-05 for Eurocopter Deutschland GmbH (now Airbus Helicopters Deutschland GmbH) (Airbus Helicopters) Model EC135 P1, P2, P2+, T1, T2, and T2+ helicopters. AD 2013-21-05 required an initial and repetitive inspections of certain bearings and modifying the floor and a rod. Since we issued AD 2013-21-05, we have determined that… Read more »
We are superseding Airworthiness Directive (AD) 2017-13-03 for Bell Helicopter Textron Canada Limited (Bell) Model 429 helicopters. AD 2017-13-03 required adding an identification number to life-limited rod ends that do not have a serial number (S/N). Since we issued AD 2017-13-03, an additional life-limited rod end was identified that is affected by the same unsafe… Read more »
We are publishing a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (Bell) Model 429 helicopters. This AD was sent previously to all known U.S. owners and operators of these helicopters as Emergency AD 2018-16-51, dated July 26, 2018, which superseded Emergency AD 2018-15-51, dated July 20, 2018. This AD requires inspecting the… Read more »
DATE: 19 July 2012 TO: R22, R44 & R44 II, and R66 owners, operators, and maintenance personnel SUBJECT: Kannad ELT Service Bulletin ROTORCRAFT AFFECTED: Helicopters equipped with optional “AF-Compact” or “AF Integra” model Emergency Locator Transmitter (ELT) manufactured by Kannad. Kannad “406 AF” and “406 AF-H” model ELTs are not affected. BACKGROUND: Kannad has issued… Read more »
DATE: 29 May 2012 TO: R66 owners, operators, and maintenance personnel SUBJECT: Center Rear Seat Decal ROTORCRAFT AFFECTED: R66 helicopters S/N 0004 thru 0110 excluding S/N 0062, 0075, 0081, 0086, 0089, 0090, 0094, 0097, 0098, 0099, 0101, 0102, 0106, 0107, and 0108. BACKGROUND: A decal was not installed on some center rear seats.
Non-conformities on adjustment of some hydromechanical units (HMUs) have been reported by a Turbomeca repair centre. The technical investigations carried out by Turbomeca are showing that only a limited number of HMUs are potentially affected by this non-conformity to HMU adjustment.
DATE: 27 October 2011 TO: R66 owners, operators, and maintenance personnel SUBJECT: Placards and Markings ROTORCRAFT AFFECTED: R66 helicopters S/N 0004 thru 0051, 0053 thru 0058, 0060, 0064 thru 0066, and 0071. TIME OF COMPLIANCE: Within next 150 flight hours or by 31 January 2012, whichever occurs first. BACKGROUND: Some placards and markings were revised… Read more »