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2010-26-11: Main Rotor Blades

FAA order 2010-26-11 is an airworthiness directive in force since January 5, 2011. The FAA's subject line: Main Rotor Blades. 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
January 5, 2011
Published
December 21, 2010 (signed December 14, 2010)
Docket
FAA-2010-1253
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

We are adopting a new airworthiness directive (AD) for the Kaman Model K-1200 helicopters. This AD requires revising the Limitations section of the Instructions for Continued Airworthiness (ICA) by establishing a life limit of 8,000 hours time-in-service (TIS) for each main rotor blade (blade) set. Also, this AD requires removing each blade set from service if it has accumulated 8,000 or more hours time-in-service (TIS). This AD also requires replacing certain blade sets with airworthy blade sets at specified intervals based on the blade set serial number (S/N). This AD was prompted by an accident and the subsequent discovery of cracks in multiple blade spars. We are issuing this AD to prevent blade failure and subsequent loss of control of the helicopter.

The order itself the regulatory text, as published

Show the full text (2,164 characters)
2010-26-11 Kaman Aerospace Corporation: Amendment 39-16550; Docket No. FAA-2010-1253; Directorate Identifier 2010-SW-084-AD. Effective Date (a) This AD is effective on January 5, 2011. Other Affected ADs (b) None. Applicability (c) This AD applies to Model K-1200 helicopters. Unsafe Condition (d) This AD was prompted by an accident and the subsequent discovery of cracks in the main rotor blade (blade) spars. We are issuing this AD to prevent blade failure and subsequent loss of control of the helicopter. Compliance (e) Before further flight, unless already done: (1) Revise the Limitations section of the Instructions for Continued Airworthiness by establishing a life limit of 8,000 hours time-in-service (TIS) for each blade set Remove each blade set with 8,000 or more hours TIS. (2) Replace each specified serial-numbered blade set with an airworthy blade set in accordance with the following table: Blade-Set Serial Number Replace within 101, 403, 408, 409, 411, and 415 400 hours TIS 417 and 419 700 hours TIS 405 1000 hours TIS Subject (f) Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code: 6210 Main Rotor Blades. Alternative Methods of Compliance (AMOCs) (g) The Manager, Boston Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested, using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ACO, send it to the attention of the person identified in the "Additional Information'' section of this AD. Note: Before using any approved AMOC, we request that you notify your principal inspector or if you have no principal inspector, your local Flight Standards District Office. Additional Information (h) For more information about this AD, contact Nicholas Faust, Aerospace Engineer, Boston Aircraft Certification Office, FAA, 12 New England Executive Park; telephone: 781-283-7763; fax: 781-238- 7170; e-mail: nicholas.faust@faa.gov.

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 7, 2026. Connections as data: /graph/directive/2010-26-11.json · aircraft systems.