Federal Register, Volume 74, Number 14, January 23, 2009, Pages 4115-4342 Page: 4,123
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Federal Register/Vol. 74, No. 14/Friday, January 23, 2009/Rules and Regulations
Reason
(d) European Aviation Safety Agency
(EASA) AD No. 2008-0077, dated March 13,
2006 (and corrected May 6, 2008), states:
"Several cases of loss of internal
components from the Hydro Mechanical Unit
(HMU) low fuel pressure switch Hydra-
Electric part number (P/N) 9 550 17 956 0
into the fuel system, have been reported on
Arriel 2 engines. The loss of internal
components from the low fuel pressure
switch into the fuel system may lead to a
rupture of the HP-LP pumps drive shaft
shear pin, and thus to a possible
uncommanded in-flight shutdown (IFSD). On
a single-engine helicopter, an uncommanded
IFSD results in an emergency autorotation
landing and in certain conditions may lead
to an accident. 'We are issuing this AD to
prevent forced autorotation landing, or an
accident.'"
Actions and Compliance
(e) Unless already done, do the following
actions.
(1) No later than September 30, 2009,
perform a one-time inspection of the HMU,
using paragraph 2 of Turbomeca Mandatory
Service Bulletin (MSB) No. 292 73 2826,
dated March 13, 2008, to identify the low
fuel pressure switch installed on the adjusted
HMU.
(2) If a Hydra-Electric low fuel pressure
switch, part number (P/N) 9 550 17 956 0 is
installed:
(i) Inspect the low fuel pressure switch and
chamber of the HMU body.
(ii) If any parts from the low fuel pressure
switch are missing or found in the HMU
chamber, replace the HMU with a new or
overhauled HMU equipped with a
serviceable low fuel pressure switch.
(iii) If not, replace only the low fuel
pressure switch with a serviceable low fuel
pressure switch.
(3) If a low fuel pressure switch other than
a Hydra-Electric low fuel pressure switch, P/
N 9 550 17 956 0 is installed, and that is the
only type of low fuel pressure switch that has
been installed since new, repair, or overhaul,
no further action is required.
(4) If a Hydra-Electric switch, P/N 9 550 17
956 0, has been or may have been installed
previously, and the conditions of paragraph
(e)(3) of this AD are not met:
(i) Inspect the chamber of the HMU body.
(ii) If any parts are found in the HMU
chamber, replace the HMU with a new or
overhauled HMU equipped with a
serviceable low fuel pressure switch.
Definition
(f) For the purpose of this AD, a serviceable
low fuel pressure switch is a switch that has
a P/N other than P/N 9 550 17 956 0.
FAA AD Difference
(g) This AD differs from the Mandatory
Continuing Airworthiness Information
(MCAI) and/ or service information, by not
referencing the P/Ns of the serviceable low
fuel pressure switch, and, defining aserviceable low fuel pressure switch, for the
purpose of this AD.Alternative Methods of Compliance
(AMOCs)
(h) The Manager, Engine Certification
Office, FAA, has the authority to approve
AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19.
Related Information
(i) Refer to MCAI EASA AD 2008-0077,
dated April 28, 2008 (and corrected May 6,
2008), for related information.
(j) Contact James Lawrence, Aerospace
Engineer, Engine Certification Office, FAA,
Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA
01803; e-mail: james.]awrence@faa.gov;
telephone (781) 238-7176; fax (781) 238-
7199, for more information about this AD.
Material Incorporated by Reference
(k) You must use Turbomeca Mandatory
Service Bulletin No. 292 73 2826, dated
March 13, 2008, to do the low fuel pressure
switch installation inspection required by
this AD.
(1) The Director of the Federal Register
approved the incorporation by reference of
this service information under 5 U.S.C.
552(a) and 1 CFR part 51.
(2) For service information identified in
this AD, contact Turbomeca, 40220 Tarnos,
France; telephone (33) 05 59 74 40 00; fax
(33) 05 59 74 45 15.
(3) You may review copies at the FAA,
New England Region, 12 New England
Executive Park, Burlington, MA; or at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
(202) 741-6030, or go to: http://
www.archives.gov/federal-register/cfr/ibr-
locations.html.
Issued in Burlington, Massachusetts, on
December 30, 2008.
Peter A. White,
Assistant Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. E8-31396 Filed 1-22-09; 8:45 am]
BILLING CODE 4910-13-PDEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0420; Directorate
Identifier 2008-NE-10-AD; Amendment 39-
15793; AD 2009-02-03]
RIN 2120-AA64
Airworthiness Directives; Lycoming
Engines IO, (L)IO, TIO, (L)TIO, AEIO,
AIO, IGO, IVO, and HIO Series
Reciprocating Engines, Teledyne
Continental Motors (TCM) LTSIO-360-
RB and TSIO-360-RB Reciprocating
Engines, and Superior Air Parts, Inc.
10-360 Series Reciprocating Engines
With Certain Precision Airmotive LLC
RSA-5 and RSA-10 Series, and Bendix
RSA-5 and RSA-10 Series, Fuel
Injection Servos
AGENCY: Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule; request for
comments.
SUMMARY: The FAA is superseding an
existing airworthiness directive (AD) for
Lycoming Engines IO, (L)IO, TIO,
(L)TIO, AEIO, AIO, IGO, IVO, and HIO
series reciprocating engines, TCM
TSIO-360-RB reciprocating engines,
and Superior Air Parts, Inc. IO-360
series reciprocating engines with certain
Precision Airmotive LLC RSA-5 and
RSA-10 series fuel injection servos.
That AD currently requires inspecting
servo plugs for looseness and damage on
fuel injection servos that have a servo
plug gasket, part number (P/N) 365533,
installed, and if loose, inspecting the
servo regulator cover threads for
damage, inspecting the gasket for
damage, reinstalling acceptable parts,
and torquing the servo plug to a new,
higher torque to maintain the proper
clamp-up force between the plug and
cover. This AD requires the same
inspections, except if the plug is found
loose, servo plug gasket, P/N 365533,
must be replaced with a new, improved
gasket, P/N 2577258. This AD also
requires replacement by December 31,
2009, of servo plug gaskets, P/N 365533,
manufactured and made available on or
after August 22, 2006, as mandatory
terminating action to the repetitive
inspections required by this AD. This
AD also prohibits the installation of any
servo plug gasket, P/N 365533. This AD
also clarifies the TCM engine model
applicability, and adds Bendix RSA-5
and RSA-10 series fuel injection servos
to the applicability. This AD resultsfrom Precision Airmotive LLC
4123
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United States. Office of the Federal Register. Federal Register, Volume 74, Number 14, January 23, 2009, Pages 4115-4342, periodical, January 23, 2009; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc132876/m1/16/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.