# AD 60-10-01: Scissor Lever Bolts - Type: Airworthiness directive - Status: Current - Products: Scotts-Bell 47 47B, 47B3, 47D, 47D1, 47E, 47G, 47G-2, 47H-1, 47J and 47K - Published: May 10, 1960 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Rotorcraft - Registered aircraft: 219 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/951335CF23EC507486256CC400737CFF.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/60-10-01 ## The airworthiness directive 60-10-01 BELL: Amdt. 146 Part 507 Federal Register May 10, 1960. Applies to All Helicopter Models: 47B, 47B3, 47D, 47D1, 47G, and 47H1, all Serial Numbers; 47G2 Serial Numbers 1327 Through 2467, 2469, 2470, 2472 Through 2477, 2556 Through 2558; 47J Serial Numbers 1420 Through 1776 (Except For Helicopters On Which Kit No. 47-3410-1 (333SI) Has Been Installed); 47E, and 47K. Compliance required as indicated except Model 47G2, Serial Numbers 2451, 2452, 2457, 2459 through 2467, 2469, 2470, 2472 through 2477, 2556 through 2558, for which compliance date is September 2, 1960. As the result of a number of recent failures of the scissor lever pivot bolts due to excessive wear, the following is required unless already accomplished. (a) Prior to June 30, 1960, except 47E and 47K as to which compliance is required prior to August 15, 1960, inspect the scissor lever pivot bolts, AN 174-31, and bolt holes in the brackets of the collective pitch sleeve weld assembly, P/N 47-150-117-5 for wear. Wear limits and reinspection intervals are specified in the following items (1), (2), (3), and (4). (1) If the diameter of the two AN 174-31 bolts is less than 0.2465 inch in any area, bolts must be replaced prior to next flight. (2) If the diameter of the bolt holes in the brackets of the collective pitch sleeve assembly is 0.2550 inch or more, install four bushings, P/N 47-150-260-3 or equivalent, and new AN 174-31 bolts within the next 25 hours' time in service. (3) If the diameter of the bolt holes in the brackets of the collective pitch sleeve assembly is between 0.2500 and 0.2550 inch, the bolts and bolt holes must be reinspected dimensionally every 25 hours' time in service until bushings P/N 47-150-260-3 are installed. (4) If the diameter of the bolt holes in the brackets of the collective pitch sleeve assembly is 0.2500 inch or less, the bolts and bolt holes must be reinspected dimensionally every 100 hours' time in service until bushings P/N 47-150-260-3 are installed. (b) Upon installation of the bushings P/N 47-150-260-3, the bolts and bushing holes must be inspected every 300 hours' time in service thereafter. (c) Upon installation of the four bushings, P/N 47-150-260-3, designate the reworked collective pitch sleeve weld assembly as P/N 47-150-117-21. (Bell Service Bulletin No. 129SB, dated March 18, 1960, covers this same subject.) Revised July 15, 1960. Revised August 19, 1960. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS H-1](https://openairdocs.org/tcds/H-1): Scott's-Bell 47 Inc; names 8 of 9 models: 47H-1, 47B, 47B3, 47D1, 47D, 47G-2, 47G, 47E - [TCDS 2H1](https://openairdocs.org/tcds/2H1): Scott's-Bell 47 Inc; names 2 of 4 models: 47K, 47J ## 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: 219 (219 by airframe model, 0 by engine model) - Makers: Bell 207, Bell-K-Copter 3, Bell Kitz Kopters 1, Bell-Allied Helicopter 1, Bell-Carson 1, Bell-Olympic Helicopters 1, Bell-Shippey 1, Bell-Tellijohn 1, Bell-Transworld Helicopter Cor 1, Bell-Yehnert 1 Models with the most aircraft: - [Bell 47G-2](https://openairdocs.org/model/bell-47g-2): 87 aircraft (airframe model) - [Bell 47G](https://openairdocs.org/model/bell-47g): 55 aircraft (airframe model) - [Bell 47D1](https://openairdocs.org/model/bell-47d1): 47 aircraft (airframe model) - [Bell 47H-1](https://openairdocs.org/model/bell-47h-1): 6 aircraft (airframe model) - [Bell 47J](https://openairdocs.org/model/bell-47j): 6 aircraft (airframe model) - [Bell 47D](https://openairdocs.org/model/bell-47d): 4 aircraft (airframe model) - [Bell-K-Copter 47G](https://openairdocs.org/model/bell-k-copter-47g): 2 aircraft (airframe model) - [Bell 47B](https://openairdocs.org/model/bell-47b): 1 aircraft (airframe model) - [Bell Kitz Kopters 47D1](https://openairdocs.org/model/bell-kitz-kopters-47d1): 1 aircraft (airframe model) - [Bell-Allied Helicopter 47D1](https://openairdocs.org/model/bell-allied-helicopter-47d1): 1 aircraft (airframe model) - [Bell-Shippey BELL 47G](https://openairdocs.org/model/bell-shippey-bell-47g): 1 aircraft (airframe model) - [Bell-Carson 47G](https://openairdocs.org/model/bell-carson-47g): 1 aircraft (airframe model) - [Bell-Tellijohn 47G-2](https://openairdocs.org/model/bell-tellijohn-47g-2): 1 aircraft (airframe model) - [Bell-K-Copter 47G-2](https://openairdocs.org/model/bell-k-copter-47g-2): 1 aircraft (airframe model) - [Bell-Transworld Helicopter Cor 47G-2](https://openairdocs.org/model/bell-transworld-helicopter-cor-47g-2): 1 aircraft (airframe model) - [Bell 47K](https://openairdocs.org/model/bell-47k): 1 aircraft (airframe model) - [Bell-Olympic Helicopters 47G2](https://openairdocs.org/model/bell-olympic-helicopters-47g2): 1 aircraft (airframe model) - [Bell-Yehnert 47G-2](https://openairdocs.org/model/bell-yehnert-47g-2): 1 aircraft (airframe model) - [Continental Copters 47G](https://openairdocs.org/model/continental-copters-47g): 1 aircraft (airframe model) All 19 models: https://openairdocs.org/ad/60-10-01/models.md Every aircraft: https://openairdocs.org/ad/60-10-01/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.