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2004-25-18: Propeller governor assemblies

FAA order 2004-25-18 is an airworthiness directive in force since January 18, 2005. The FAA's subject line: Propeller governor assemblies. It names the Pratt & Whitney Canada PT6A-60A, Pratt & Whitney Canada PT6A-65B engines: about 1,257 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Pratt & Whitney Canada Corp.
Models
PT6A-60A, PT6A-65B
Engine series
Pratt & Whitney Canada PT6A-60A 1,180 aircraft
Pratt & Whitney Canada PT6A-65B 77 aircraft

Dates and paperwork

In force since
January 18, 2005
Published
December 14, 2004 (signed December 6, 2004)
Docket
2003-NE-09-AD
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney Canada (PWC) PT6A-60A and PT6A-65B turboprop engines. This AD requires replacing Woodward propeller governor assemblies, part number (P/N) 8210-212H. This AD results from six incidents during airplane acceptance flight testing where directional control of the airplane was difficult to maintain during landing. We are issuing this AD to prevent loss of directional control and damage to the airplane.

The order itself the regulatory text, as published

Show the full text (2,128 characters)
2004-25-18 Pratt & Whitney Canada: Amendment 39-13906. Docket No. 2003-NE-09-AD. Effective Date (a) This AD becomes effective January 18, 2005. Affected ADs (b) None. Applicability (c) This AD applies to Pratt & Whitney Canada (PWC) PT6A-60A turboprop engines, with an engine serial number (SN) which is before and includes SN PCE-PK0425, and SNs PCE-95006 thru PCE-95828, and PT6A-65B turboprop engines, with a SN which is before and includes SN PCE-PP0062, and PCE-32001 thru PCE-32644 and all engines converted to engine model PT6A-65B, that have Woodward propeller governor assemblies, part number (P/N) 8210-212H, installed. These engines are installed on, but not limited to, Raytheon Super Beech King Air 300/350 and Raytheon Beech 1900/1900C airplanes. Unsafe Condition (d) This AD results from six incidents during airplane acceptance flight testing, whereby directional control of the airplane was difficult to maintain during landing. The actions specified in this AD are intended to prevent loss of directional control and damage to the airplane. Compliance (e) Compliance with this AD is required as indicated, unless already done. Removal of Woodward Propeller Governor Assemblies (f) Replace Woodward propeller governor assemblies, P/N 8210- 212H, at the next access to the governor or within six months after the effective date of this AD, whichever occurs earlier. Information on replacing the Woodward propeller governor assembly can be found in Pratt & Whitney Canada Service Bulletin No. PT6A-72-13354, Revision 1, dated July 11, 2003. (g) After the effective date of this AD, do not install any Woodward propeller governor assembly, P/N 8210-212H, on any engine. Alternative Methods of Compliance (h) The Manager, Engine Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. Related Information (i) The subject of this AD is addressed in Transport Canada airworthiness directive CF-2002-02, dated January 15, 2002. Material Incorporated by Reference (j) None.

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/2004-25-18.json · aircraft systems.