Is AD 2013-18570 a recurring Airworthiness Directive?

No — AD 2013-18570 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-18570 apply to?

AD 2013-18570 applies to Bell — models HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-18570

one-time

AD 2013-18570 · 2013-08-06 · airframe

Airworthiness Directives; Various Restricted Category Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Arrow Falcon Exporters, Inc. (previously Utah State University); Firefly Aviation Helicopter Services (previously Erickson Air-Crane Co.); California Department of Forestry; Garlick Helicopters, Inc.; Global Helicopter Technology, Inc.; Hagglund Helicopters, LLC (previously Western International Aviation, Inc.); International Helicopters, Inc.; Precision Helicopters, LLC; Robinson Air Crane, Inc.; San Joaquin Helicopters (previously Hawkins and Powers Aviation, Inc.); S.M.&T. Aircraft (previously US Helicopters, Inc., UNC Helicopter, Inc., Southern Aero Corporation, and Wilco Aviation); Smith Helicopters; Southern Helicopter, Inc.; Southwest Florida Aviation International, Inc. (previously Jamie R. Hill and Southwest Florida Aviation); Tamarack Helicopters, Inc. (previously Ranger Helicopter Services, Inc.); US Helicopter, Inc. (previously UNC Helicopter, Inc.); West Coast Fabrication; and Williams Helicopter Corporation (previously Scott Paper Co.) Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P Helicopters; and Southwest Florida Aviation Model UH- 1B (SW204 and SW204HP) and UH-1H (SW205) Helicopters. This AD requires creating a component history card or equivalent record for each main rotor grip (grip); determining and recording the total hours time-in- service (TIS) for each grip; visually inspecting the upper and lower tangs of the grip for a crack; inspecting the grip buffer pads for delamination and if delamination is present, inspecting the grip surface for corrosion or other damage; inspecting the grip for a crack using ultrasonic (UT) and fluorescent penetrant inspection methods; and establishing a retirement life for certain grips. This AD was prompted by three in-flight failures of grips installed on Bell Helicopter Textron (Bell) Model 212 helicopters, which resulted from cracks originating in the lower main rotor blade bolt lug. The actions are intended to prevent failure of the grip, separation of a main rotor blade, and subsequent loss of control of the helicopter.

Which aircraft AD 2013-18570 applies to

MakesBell

ModelsHH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, UH-1P, UH-1B (SW204), UH-1B (SW204HP), UH-1H (SW205), UH-1

Part-conditional — 204-011-121-009, 204-011-121-121, ASI-4011-121-9, 204-011-121-005, 204-011-121-113, 204-011-121-117.

Applies only to the named certificate holders/operators (Arrow Falcon Exporters Inc [prev. Utah State University]; Firefly Aviation Helicopter Services [prev. Erickson Air-Crane Co.]; California Department of Forestry; Garlick Helicopters Inc; Global Helicopter Technology Inc; Hagglund Helicopters LLC [prev. Western International Aviation Inc]; International Helicopters Inc; Precision Helicopters LLC; Robinson Air Crane Inc; San Joaquin Helicopters [prev. Hawkins and Powers Aviation Inc]; S.M.&T. Aircraft [prev. US Helicopters Inc, UNC Helicopter Inc, Southern Aero Corporation, Wilco Aviation]; Smith Helicopters; Southern Helicopter Inc; Southwest Florida Aviation International Inc [prev. Jamie R. Hill and Southwest Florida Aviation]; Tamarack Helicopters Inc [prev. Ranger Helicopter Services Inc]; US Helicopter Inc [prev. UNC Helicopter Inc]; West Coast Fabrication; Williams Helicopter Corporation [prev. Scott Paper Co.]) with main rotor grip P/N 204-011-121-009, -121-121, or ASI-4011-121-9 installed; or grip P/N 204-011-121-005 or -121-113 if ever installed on a Model 205B or UH-1N helicopter; or grip P/N 204-011-121-117 if ever installed on a Model 205B helicopter.

Whether AD 2013-18570 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 2013-18570 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.