Is AD E9-28235 a recurring Airworthiness Directive?

No — AD E9-28235 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive E9-28235

Q: Which aircraft does AD E9-28235 apply to?

AD E9-28235 applies to Honeywell International — models LTS101-600A-2, LTS101-600A-3, LTS101-600A-3A, LTS101-650B-1, LTS101-650B-1A, LTS101-650C-2, LTS101-650C-3, LTS101-650C-3A. Serial/part conditions may narrow it to specific aircraft.

one-time

AD E9-28235 · 2009-11-30 · turboshaft engine

Airworthiness Directives; Honeywell International Inc. LTS101 Series Turboshaft and LTP101 Series Turboprop Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. LTS101 series turboshaft and LTP101 series turboprop engines with certain gas generator turbine discs installed. This AD requires reducing the life limits for certain gas generator turbine discs. This AD results from an error in a change to the engineering drawing for the gas generator turbine disc from which Honeywell manufactured 260 discs. We are issuing this AD to prevent rupture of the gas generator turbine disc, which could result in uncontained engine failure and damage to the aircraft.

Which aircraft AD E9-28235 applies to

MakesHoneywell International

ModelsLTS101-600A-2, LTS101-600A-3, LTS101-600A-3A, LTS101-650B-1, LTS101-650B-1A, LTS101-650C-2, LTS101-650C-3, LTS101-650C-3A, LTS101-750A-1, LTS101-750A-3, LTS101-750B-1, LTS101-750B-2, LTS101-750C-1, LTP101-600A-1A, LTP101-700A-1A, LTS101, LTP101

Part-conditional — 4-111-015-14.

Applies only when a gas generator turbine disc P/N 4-111-015-14 is installed. Covers both LTS101 turboshaft engines and LTP101 turboprop engines; installed on Eurocopter AS350, Eurocopter Deutschland BK117, Bell Helicopter Textron 222 helicopters, and Page Thrush, Air Tractor AT-302, Piaggio (IAM) P166-DL3, Pacific Aero 08-600, and Riley International R421 airplanes.

Whether AD E9-28235 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD E9-28235 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.