Division Bell UH-1 Series Helicopters - AD/UH-1/19 - Tail Rotor Slider - Bell UH-1 Series Helicopters

Bell UH-1 Series Helicopters

AD/UH-1/19	Tail Rotor Slider	12/2006

Applicability:	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 Model SW204, SW204HP, SW205, and SW205A-1 helicopters, with tail rotor (T/R) slider, part number (P/N)204-010-720-3 or P/N 204010720-3 installed.
Requirement:	1. Review the helicopter records to determine the Commercial and Government Entity (CAGE) code of the T/R slider. If necessary, remove the installed T/R slider to determine the CAGE code.If the T/R slider is an FAA approved part; for example, an original equipment manufacturer (OEM) part, and has a legible CAGE code other than Code 15716 or 26098; no further action is required.2. If you cannot determine whether the T/R slider is an FAA approved part and it contains no stamped CAGE code, an illegible stamped CAGE code, or is stamped with a CAGE code 15716 or 26098 then do the following:a. Magnaflux inspect the T/R slider for a crack.b If a crack is found, replace the cracked T/R slider with an airworthy T/R slider.Note 1: T/R sliders manufactured by Forest Scientific, Inc., were produced under a military contract and do not meet the OEM specifications. The machining process resulted in excess surface roughness. See Figure 1 of this AD.Figure 1.Note 2: T/R sliders manufactured by Bell Helicopter Textron, Inc. (left) and Forest Scientific, Inc. (right). Note the rough finish of the Forest Scientific, Inc.-manufactured T/R slider compared to the one shown on the left.Note 3: T/R sliders manufactured by Bell Helicopter Textron, Inc. have a vibro-etched P/N on them and do not have a CAGE code marking on the part.3. Replace each T/R slider that has an illegible CAGE code or Code 15716 or 26098 with an FAA approved airworthy slider without a CAGE code or with a legible CAGE code other than 15716 or 26098. Any T/R slider removed from service based on the requirements of this paragraph is not eligible for installation on any helicopter.Terminating Action.Replacing the T/R slider with an FAA approved airworthy T/R slider without a CAGE code or with a legible CAGE code other than 15716 or 26098, constitutes terminating action for the requirements of this AD.Note 4: FAA AD 2006-19-05 Amdt 39-14762 dated 5 September 2006 refers.
Compliance:	1. Within 25 hours after the effective date of this AD.2. a. Before further flight, unless accomplished previously, and thereafter at intervals not to exceed 25 hours time in service (TIS).2. b. Before further flight.3. On or before accumulating 1000 hours TIS or on or before 12 months, whichever occurs first, after the effective date of this AD.

Applicability:

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 Model SW204, SW204HP, SW205, and SW205A-1 helicopters, with tail rotor (T/R) slider, part number (P/N)204-010-720-3 or P/N 204010720-3 installed.

Requirement:

1. Review the helicopter records to determine the Commercial and Government Entity (CAGE) code of the T/R slider. If necessary, remove the installed T/R slider to determine the CAGE code.If the T/R slider is an FAA approved part; for example, an original equipment manufacturer (OEM) part, and has a legible CAGE code other than Code 15716 or 26098; no further action is required.2. If you cannot determine whether the T/R slider is an FAA approved part and it contains no stamped CAGE code, an illegible stamped CAGE code, or is stamped with a CAGE code 15716 or 26098 then do the following:a. Magnaflux inspect the T/R slider for a crack.b If a crack is found, replace the cracked T/R slider with an airworthy T/R slider.Note 1: T/R sliders manufactured by Forest Scientific, Inc., were produced under a military contract and do not meet the OEM specifications. The machining process resulted in excess surface roughness. See Figure 1 of this AD.Figure 1.Note 2: T/R sliders manufactured by Bell Helicopter Textron, Inc. (left) and Forest Scientific, Inc. (right). Note the rough finish of the Forest Scientific, Inc.-manufactured T/R slider compared to the one shown on the left.Note 3: T/R sliders manufactured by Bell Helicopter Textron, Inc. have a vibro-etched P/N on them and do not have a CAGE code marking on the part.3. Replace each T/R slider that has an illegible CAGE code or Code 15716 or 26098 with an FAA approved airworthy slider without a CAGE code or with a legible CAGE code other than 15716 or 26098. Any T/R slider removed from service based on the requirements of this paragraph is not eligible for installation on any helicopter.Terminating Action.Replacing the T/R slider with an FAA approved airworthy T/R slider without a CAGE code or with a legible CAGE code other than 15716 or 26098, constitutes terminating action for the requirements of this AD.Note 4: FAA AD 2006-19-05 Amdt 39-14762 dated 5 September 2006 refers.

Compliance:

1. Within 25 hours after the effective date of this AD.2. a. Before further flight, unless accomplished previously, and thereafter at intervals not to exceed 25 hours time in service (TIS).2. b. Before further flight.3. On or before accumulating 1000 hours TIS or on or before 12 months, whichever occurs first, after the effective date of this AD.

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