# AD 81-17-01: Starting Vibrator Assemblies - Type: Airworthiness directive - Status: Current - Products: Bendix Starting Vibrator Assemblies, B-2, B-2A, B-2B, 280, 280C, 280F, F-28, F-28A, F-28C, F-28F, UH-12 and 40 more - Effective: August 13, 1981 - Superseded by: Nothing supersedes this AD - Product type: Appliance - Amendment: 39-4183 - Registered aircraft: 2,117 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E1EA000109B8BAF86256A3400618CE5.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/81-17-01 ## The airworthiness directive 81-17-01 BENDIX: Amendment 39-4183. Applies to Bendix Starting Vibrator Assemblies, Part Numbers 10-176485-121, -122, -241, -242; 10-382780-12, -24 installed in but not limited to the following aircraft powered by reciprocating engines. Bell (Textron) Model 47 series helicopters Brantley (Hynes) Model B2 series helicopters Enstrom Model F28, F28A, F28F; 280, 280F helicopters, Model F28C and 280C helicopters equipped with Avco Lycoming HIO-360-E1BD engines Hughes (Summa Corp.) Model 269 series helicopters Hiller (Fairchild Industries) Model UH12 series helicopters Robinson Model R-22 series helicopters To preclude the loss of ignition due to the grounding of both "P" (Primary) leads within the starting vibrator, accomplish the alteration and identification shown in the Detailed Instruction of Bendix Engine Products Division Service Bulletin No. 614 or an FAA approved equivalent within the next 25 hours time in service after the effective date of this ADunless previously accomplished. Equivalent inspections and Procedures must be approved by the Chief of the Engineering and Manufacturing Branch, AEA-210, Federal Aviation Administration (FAA) Eastern Region. As permitted by FAR 21.197, aircraft may be flown to a base where maintenance required by this airworthiness directive can be accomplished. This amendment becomes effective August 13, 1981. ## Affected data sheets (11) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 2H3](https://openairdocs.org/tcds/2H3): Scott's-Bell 47 Inc; names 11 of 11 models: 47G-2A, 47G-3B, 47G-3, 47G-4A, 47G-5A, 47G-5, 47G-3B-2A, 47G-3B-2… - [TCDS H-1](https://openairdocs.org/tcds/H-1): Scott's-Bell 47 Inc; names 9 of 9 models: 47H-1, 47B, 47B3, 47D1, 47D, 47G-2, 47G, 47… - [TCDS H1CE](https://openairdocs.org/tcds/H1CE): The Enstrom Helicopter Corporation; names 7 of 14 models: 280C, 280, F-28F, F-28, F-28C, 280F, F-28A - [TCDS 4H12](https://openairdocs.org/tcds/4H12): Schweizer RSG LLC; names 6 of 6 models: 269B, 269D, 269A-1, 269A, 269C, 269C-1 - [TCDS 2H1](https://openairdocs.org/tcds/2H1): Scott's-Bell 47 Inc; names 4 of 4 models: 47K, 47J-2, 47J-2A, 47J - [TCDS H10WE](https://openairdocs.org/tcds/H10WE): Robinson Helicopter Company; names 4 of 4 models: R22, R22 MARINER, R22 ALPHA, R22 BETA - [TCDS 2H2](https://openairdocs.org/tcds/2H2): Brantly International Inc.; names 3 of 3 models: B-2B, B-2A, B-2 - [TCDS 6H1](https://openairdocs.org/tcds/6H1): Siam Hiller Holdings Inc.; names 2 of 2 models: UH-12, UH-12A - [TCDS 6H2](https://openairdocs.org/tcds/6H2): Siam Hiller Holdings Inc.; names 2 of 2 models: UH-12C, UH-12B - [TCDS H1WE](https://openairdocs.org/tcds/H1WE): Siam Hiller Holdings Inc.; names 2 of 2 models: UH-12L4, UH-12L - [TCDS 4H10](https://openairdocs.org/tcds/4H10): Siam Hiller Holdings Inc.; names 1 of 1 models: UH-12D ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 2,117 (2,117 by airframe model, 0 by engine model) - Makers: Robinson Helicopter 817, Bell 476, Schweizer 216, Hughes 207, Enstrom 152, Hiller 109, Enstrom Helicopter 57, Brantly 53, Schweizer RSG 5, Bell-K-Copter 3 Models with the most aircraft: - [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 633 aircraft (airframe model) - [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22): 131 aircraft (airframe model) - [Schweizer 269C](https://openairdocs.org/model/schweizer-269c): 115 aircraft (airframe model) - [Hughes 269A](https://openairdocs.org/model/hughes-269a): 97 aircraft (airframe model) - [Bell 47G-2](https://openairdocs.org/model/bell-47g-2): 87 aircraft (airframe model) - [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1): 86 aircraft (airframe model) - [Schweizer 269C-1](https://openairdocs.org/model/schweizer-269c-1): 84 aircraft (airframe model) - [Hughes 269C](https://openairdocs.org/model/hughes-269c): 74 aircraft (airframe model) - [Enstrom F-28F](https://openairdocs.org/model/enstrom-f-28f): 62 aircraft (airframe model) - [Bell 47G](https://openairdocs.org/model/bell-47g): 55 aircraft (airframe model) - [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c): 48 aircraft (airframe model) - [Bell 47D1](https://openairdocs.org/model/bell-47d1): 47 aircraft (airframe model) - [Enstrom F-28C](https://openairdocs.org/model/enstrom-f-28c): 46 aircraft (airframe model) - [Bell 47G-5](https://openairdocs.org/model/bell-47g-5): 40 aircraft (airframe model) - [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a): 38 aircraft (airframe model) - [Hiller UH-12B](https://openairdocs.org/model/hiller-uh-12b): 35 aircraft (airframe model) - [Brantly B-2B](https://openairdocs.org/model/brantly-b-2b): 34 aircraft (airframe model) - [Robinson Helicopter R22 MARINER](https://openairdocs.org/model/robinson-helicopter-r22-mariner): 34 aircraft (airframe model) - [Hiller UH-12C](https://openairdocs.org/model/hiller-uh-12c): 31 aircraft (airframe model) - [Hughes 269B](https://openairdocs.org/model/hughes-269b): 31 aircraft (airframe model) All 79 models: https://openairdocs.org/ad/81-17-01/models.md Every aircraft: https://openairdocs.org/ad/81-17-01/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.