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2000-18-10: Sprag Clutches

FAA order 2000-18-10 is an airworthiness directive in force since September 26, 2000. The FAA's subject line: Sprag Clutches. It names Kaman Aerospace Corp K-1200: about 17 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: rotorcraft systems.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Kaman Aerospace Corporation
Models
K-1200
On this site
Kaman Aerospace Corp K-1200 17 registered

Dates and paperwork

In force since
September 26, 2000
Published
September 11, 2000 (signed September 1, 2000)
Docket
2000-SW-32-AD
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

This amendment adopts a new airworthiness directive (AD) for Kaman Model K-1200 helicopters. This action requires replacing certain unairworthy sprag clutches with airworthy sprag clutches. This amendment is prompted by two incidents of sprag clutch failure during external load operations. The actions specified in this AD are intended to prevent a malfunctioning transmission clutch, loss of drive to the main rotor system, and subsequent loss of control of the helicopter.

The order itself the regulatory text, as published

Show the full text (2,382 characters)
2000-18-10 KAMAN AEROSPACE CORPORATION: Amendment 39-11895. Docket No. 2000-SW-32- AD. Applicability: Model K-1200 helicopters, with sprag clutch, part number (P/N) K974110-005, installed, certificated in any category. NOTE 1: This AD applies to each helicopter identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For helicopters that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it. Compliance: Required within 10 hours time-in-service, unless accomplished previously. To prevent a malfunctioning transmission clutch, loss of drive to the main rotor system, and subsequent loss of control of the helicopter, accomplish the following: (a) Replace each sprag clutch, P/N K974110-005, with a sprag clutch, P/N K974110-003. Sprag clutch, P/N K974110-005, is considered unairworthy. NOTE 2: Kaman Aerospace Corporation Service Bulletin No. 090, dated July 13, 2000, pertains to the subject of this AD. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Regulations Group, Rotorcraft Directorate, FAA. Operators shall submit their requests through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Regulations Group. NOTE 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Regulations Group. (c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the helicopter, without an external load, to a location where the requirements of this AD can be accomplished. (d) This amendment becomes effective on September 26, 2000.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2000-18-10.json · aircraft systems.