Airworthiness Directive · Amendment 39-12557 · Honeywell International Inc. Models LTS101-600A-2 and LTS101-600A-3 Turboshaft Engines; and LTP101-600A-1A and LTP101-700A-1A Turboprop Engines
Honeywell International Inc. Models LTS101-600A-2 and LTS101-600A-3 Turboshaft Engines; and LTP101-600A-1A and LTP101-700A-1A Turboprop Engines
This airworthiness directive (AD) is applicable to Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) Models LTS101-6000A-2 and LTS101-600A-3 turboshaft engines; and LTP101-600A-1A and LTP101-700A-1A turboprop engines with fuel controls with the following part numbers (P/N's) installed: Table 1.--Fuel Control P/N's Engine Model No. Fuel Control P/N LTS101-600A-2.......................... 4-301-098-01, 4-301-098-04, 4- 301-098-10, 4-301-098-15. LTS101-600A-3.......................... 4-301-288-01, 4-301-288-04. LTP101-600A-1A......................... 4-303-023-01, 4-303-023-02, 4- 303-023-03, 4-303-023-04. LTP101-700A-1A......................... 4-303-033-01, 4-303-033-02, 4- 303-033-04. These engines are used on, but not limited to, Aerospatiale AS350 helicopters and Air Tractor AT-302, Page Thrush, Piaggio P.166-DL3, and Riley International R421 airplanes.
This amendment adopts a new airworthiness directive (AD), that is applicable to Honeywell International Inc. (formerly AlliedSignal Inc. and Textron Lycoming) Models LTS101-600A-2 and LTS101-600A-3 turboshaft engines; and LTP101-600A-1A and LTP101-700A-1A turboprop engines. This amendment requires replacing certain fuel controls that have beryllium-copper bellows with improved fuel controls that incorporate Inconel 718 stainless steel welded bellows. This amendment is prompted by a report of an uncommanded power loss on a Textron Lycoming LTS101 engine due to a corrosion damaged fuel control bellows. The actions specified by this AD are intended to prevent the engine from reducing the fuel flow to minimum flow resulting in an uncommanded power loss.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
