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2016-21-07: Fuel control drive

FAA order 2016-21-07 is an airworthiness directive in force since November 28, 2016. The FAA's subject line: Fuel control drive. It names the Honeywell TPE331-1, Honeywell TPE331-10, Honeywell TPE331-10AV, Honeywell TPE331-10R, Honeywell TPE331-10T, Honeywell TPE331-10U, Honeywell TPE331-10UA, Honeywell TPE331-11U, Honeywell TPE331-12JR, Honeywell TPE331-12UHR, Honeywell TPE331-2, Honeywell TPE331-3U, Honeywell TPE331-5, Honeywell TPE331-6, Honeywell TPE331-series engines: about 106 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
Honeywell International Inc.
Models
TPE331-1, TPE331-10, TPE331-10AV, TPE331-10GP, TPE331-10GT, TPE331-10P, TPE331-10R, TPE331-10T, TPE331-10U, TPE331-10UA, TPE331-10UF, TPE331-10UG, TPE331-10UGR, TPE331-10UR, TPE331-11U, TPE331-12JR, TPE331-12UA, TPE331-12UAR, TPE331-12UHR, TPE331-2, TPE331-2UA, TPE331-3U, TPE331-3UW, TPE331-5, TPE331-5A, TPE331-5AB, TPE331-5B, TPE331-6, TPE331-6A
Engine series
Honeywell TPE331-1 1 aircraft
Honeywell TPE331-10 13 aircraft
Honeywell TPE331-10AV 3 aircraft
Honeywell TPE331-10R 13 aircraft
Honeywell TPE331-10T 8 aircraft
Honeywell TPE331-10U 4 aircraft
Honeywell TPE331-10UA 1 aircraft
Honeywell TPE331-11U 8 aircraft
Honeywell TPE331-12JR 15 aircraft
Honeywell TPE331-12UHR 3 aircraft
Honeywell TPE331-2 3 aircraft
Honeywell TPE331-3U 1 aircraft
Honeywell TPE331-5 2 aircraft
Honeywell TPE331-6 3 aircraft
Honeywell TPE331-series 28 aircraft

Dates and paperwork

In force since
November 28, 2016
Published
October 24, 2016 (signed October 14, 2016)
Docket
FAA-2006-23706
Replaces
2015-12-04
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

We are superseding airworthiness directive (AD) 2015-12-04 for all Honeywell International Inc. (Honeywell) TPE331-1, -2, -2UA, -3U, - 3UW, -5, -5A, -5AB, -5B, -6, -6A, -10, -10AV, -10GP, -10GT, -10P, -10R, -10T, -10U, -10UA, -10UF, -10UG, -10UGR, -10UR, -11U, -12JR, -12UA, - 12UAR, and -12UHR turboprop engines with certain Woodward fuel control unit (FCU) assemblies, installed. AD 2015-12-04 required initial and repetitive dimensional inspections of the affected fuel control drives and insertion of certain airplane operating procedures into the applicable flight manuals. This AD corrects the compliance requirements and relaxes the inspection interval. This AD was prompted by a request to change compliance time from 50 hours to 100 hours for affected fuel controls. We are [[Page 73021]] issuing this AD to prevent failure of the fuel control drive, damage to the engine, and damage to the airplane.

The order itself the regulatory text, as published

Show the full text (6,809 characters)
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by removing airworthiness directive (AD) 2015-12-04, Amendment 39-18177, (80 FR 34534, June 17, 2015), and adding the following new AD: 2016-21-07 Honeywell International Inc.: Amendment 39-18688; Docket No. FAA-2006-23706; Directorate Identifier 2006-NE-03-AD. (a) Effective Date This AD is effective November 28, 2016. (b) Affected ADs This AD replaces AD 2015-12-04, Amendment 39-18177, (80 FR 34534, June 17, 2015). (c) Applicability This AD applies to all Honeywell International Inc. (Honeywell) TPE331-1, -2, -2UA, -3U, -3UW, -5, -5A, -5AB, -5B, -6, -6A, -10, - 10AV, -10GP, -10GT, -10P, -10R, -10T, -10U, -10UA, -10UF, -10UG, [[Page 73022]] -10UGR, -10UR, -11U, -12JR, -12UA, -12UAR, and -12UHR turboprop engines with Woodward fuel control unit (FCU) assemblies with Honeywell part numbers (P/Ns) as listed in Table 1 to paragraph (c) of this AD, installed. Table 1 to Paragraph (c)--Affected FCU Assembly P/Ns ------------------------------------------------------------------------ Group # Engine FCU Assembly P/Ns ------------------------------------------------------------------------ 1..................... TPE331-1, -2, and - P/N 869199-13, -20, -21, 2UA. 22, -23, -24, -25, -26, 27, -28, -29, -31, -32, 33, -34, and -35. 2..................... TPE331-1, -2, and - P/N 869199-9, -10, -11, - 2UA. 12, -14, -16, -17, and - 18. 3..................... TPE331-3U, -3UW, -5, - P/N 893561-7, -8, -9, - 5A, -5AB, -5B, -6, - 10, -11, -14, -15, -16, 6A, -10AV, -10GP,- 20, -26, -27, -29; and 10GT, -10P, and -10T. P/N 897770-1, -3, -7, -9, -10, -11, -12, -14, -15, -16, -25, -26, and -28. 4..................... TPE331-3U, -3UW, -5, - P/N 893561-4, -5, -12, - 5B, -6, -6A, and - 13; and 10T. P/N 897770-5, -8, and - 13. 5..................... TPE331-10, -10R, - P/N 897375-2, -3, -4, -5, 10U, -10UA, -10UF, - -8, -9, -10, -11, -12, - 10UG, -10UGR, -10UR, 13, -14, -15, -16, -17, -11U, -12JR, -12UA, - 19, -21, -24, -25, -26, 12UAR, and -12UHR. 27; and P/N 897780-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -30, -32, -34, -36, -37, -38; and P/N 893561-17, -18, and - 19. ------------------------------------------------------------------------ (d) Unsafe Condition This AD was prompted by reports of loss of the fuel control drive, leading to engine overspeed and engine failure. We are issuing this AD to prevent failure of the fuel control drive, damage to the engine, and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Inspection of Engines With FCU Assembly P/Ns in Groups 2 or 4 For FCU assembly P/Ns in Groups 2 or 4 listed in Table 1 to paragraph (c) of this AD: (i) At the next scheduled inspection of the fuel control drive, or within 500 hours-in-service (HIS) after the effective date of this AD, whichever occurs first, inspect the fuel control drive for wear. (ii) Thereafter, reinspect the fuel control drive within every 1,000 HIS since-last-inspection (SLI). (2) Inspection of Engines With FCU Assembly P/Ns in Groups 1, 3, or 5 For FCU assembly P/Ns in Groups 1, 3, or 5 listed in Table 1 to paragraph (c) of this AD: (i) If, on the effective date of this AD, the FCU assembly has 900 or more HIS SLI, inspect the fuel control drive for wear within 100 HIS after the effective date of this AD. (ii) If, on the effective date of this AD, the FCU assembly has fewer than 900 HIS SLI, inspect the fuel control drive for wear within 1,000 HIS. (iii) Thereafter, reinspect the fuel control drive for wear within every 1,000 HIS SLI. (3) Airplane Operating Procedures Within 60 days after the effective date of this AD, insert the information in Figure 1 to paragraph (e) of this AD, into the Emergency Procedures Section of the applicable Airplane Flight Manual (AFM), Pilot Operating Handbook (POH), or the Manufacturer's Operating Manual (MOM). BILLING CODE 4910-13-P [[Page 73023]] [GRAPHIC] [TIFF OMITTED] TR24OC16.000 BILLING CODE 4910-13-C (f) Optional Terminating Action Replacing the affected FCU assembly with an FAA-approved FCU assembly not listed in this AD by P/N is terminating action for the initial and repetitive inspections required by this AD, and for inserting the information in Figure 1 to paragraph (e) of this AD into the AFM, POH, and MOM. (g) Definitions For the purposes of this AD: (1) The ``fuel control drive'' is a series of mating splines located between the fuel pump and fuel control governor. (2) The fuel control drive consists of four drive splines: The fuel pump internal spline, the fuel control external ``quill shaft'' spline, and the stub shaft internal and external splines. (h) Alternative Methods of Compliance (AMOCs) The Manager, Los Angeles Aircraft Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (i) Related Information (1) For more information about this AD, contact Joseph Costa, Aerospace Engineer, Los Angeles Aircraft Certification Office, FAA, Transport Airplane Directorate, 3960 Paramount Blvd., Lakewood, CA 90712-4137; phone: 562-627-5246; fax: 562-627-5210; email: joseph.costa@faa.gov. (2) Information pertaining to operating recommendationsfor affected engines after a fuel control drive failure is contained in Honeywell Operating Information Letter (OIL) OI331-12R6, dated May 26, 2009, for multi-engine airplanes; and OIL OI331-18R4, dated May 26, 2009, for single-engine airplanes. Information on fuel control drive inspection can be found in Section 72-00-00 of the applicable TPE331 maintenance manuals. These Honeywell OILs and the TPE331 maintenance manuals can be obtained from Honeywell using the contact information in paragraph (i)(3) of this AD. (3) For service information identified in this AD, contact Honeywell International Inc., 111 S. 34th Street, Phoenix, AZ 85034- 2802; phone: 800-601-3099; Internet: https://myaerospace.honeywell.com/wps/portal. (4) You may view this service information at FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125.

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/2016-21-07.json · aircraft systems.