AD 2001-22-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Honeywell International, Inc. LTP 101 Series Turboprop and LTS101 Series Turboshaft Engines |
| engine | Honeywell | International | Airworthiness Directives; Honeywell International, Inc. LTP 101 Series Turboprop and LTS101 Series Turboshaft Engines |
Unsafe Condition
Cracking and fuel leakage of rigid tube fuel manifolds due to low-cycle fatigue (LCF), which could result in an in-flight fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace fuel manifolds based on gas generator rotor (Ng) cycles-since-new (CSN) or Ng cycles-in-service (CIS) as specified in the AD. Do not install fuel manifolds listed in Table 1 if they meet any of the specified conditions.
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Compliance Time
Varies based on Ng cycles: before accumulating 3,000 total Ng cycles, within 250 CIS after the effective date, or within 2,000 CIS after the effective date, whichever is applicable.
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Affected Aircraft
Honeywell International, Inc. (formerly AlliedSignal, Inc. and Textron Lycoming) LTP 101 series turboprop and LTS101 series turboshaft engines with rigid tube fuel manifolds having part numbers listed in Table 1. Engines installed on aircraft such as Aerospatiale AS350, Eurocopter MBB-BK117 and HH-65A, Bell 222, Page Thrush, Air Tractor AT-302, Piaggio P.166-DL3, Riley International R421, and Pacific Aero 08-600.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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