AD 96-12-27
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Honeywell International Inc. | LTP 101-600 | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTP 101-600A | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTP 101-600A-1A | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTP 101-700A-1A | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600A | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600A-1 | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600A-2 | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600A-3 | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600B | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
| engine | Honeywell International Inc. | LTS101-600B-3 | Airworthiness Directives; AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 Series Turboshaft and LTP 101 Series Turboprop Engines |
Unsafe Condition
Gas generator turbine disk tenon failure leading to total loss of engine power, inflight engine shutdown, and possible damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove suspect disks from service and perform a one-time inspection of the disk tenon area of the gas generator turbine disk, replacing with a serviceable part as per Textron Lycoming Service Bulletin LT 101-72-50-0150.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required within specified cycles in service (CIS) based on cycles since new (CSN) on the effective date of the AD (August 19, 1996). Specific deadlines vary from 235 to 1,100 CIS depending on CSN at effective date, with some tied to accumulating 3,400 CSN.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AlliedSignal Inc. (formerly Textron Lycoming) LTS 101 series turboshaft and LTP 101 series turboprop engines installed on Aerospatiale AS 350 and SA366G, Bell 222, MBB BK117 helicopters; and Piaggio P166-DL3 and Airtractor AT302 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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