Explosives, 39041 [E7-13925]
Download as PDF
<![CDATA[
Federal Register / Vol. 72, No. 136 / Tuesday, July 17, 2007 / Proposed Rules
Comments Due Date
(a) The Federal Aviation Administration
(FAA) must receive comments on this
airworthiness directive (AD) action by
September 17, 2007.
Affected ADs
(b) None.
Applicability
(c) This AD applies to General Electric
Company (GE) CF6–80C2D1F turbofan
engines, installed on McDonnell Douglas
Corporation MD–11 series airplanes.
Unsafe Condition
(d) This AD results from reports of engine
flameout events during flight, including
reports of events where all engines
simultaneously experienced a flameout or
other adverse operation. We are issuing this
AD to minimize the potential of an all-engine
flameout event, due to ice accretion and
shedding during flight. Exposure to ice
crystals during flight is believed to be
associated with these flameout events.
Compliance
(e) You are responsible for having the
actions required by this AD performed within
the compliance times specified unless the
actions have already been done.
Interim Action
(f) These actions are interim actions due to
the on-going investigation, and we may take
further rulemaking actions in the future
based on the results of the investigation and
field experience.
Engine Electronic Control Unit (ECU)
Software Removal
(g) At the next shop visit of the engine or
of the ECU, whichever occurs first, and not
to exceed 60 months from the effective date
of this AD, remove the following software
versions from the ECUs:
TABLE 1.—REMOVAL OF ECU
SOFTWARE VERSIONS
Software
version
(1) 8.5.A ...........................
(2) 8.3.C ...........................
(3) 8.3.D ...........................
(4) 8.3.E ...........................
rfrederick on PROD1PC67 with PROPOSALS
(5) 8.3.F ...........................
(6) 8.3.G ...........................
(7) 8.3.H ...........................
(8) 8.3.J ............................
Installed in ECU
part No.
1851M51P01,
1851M51P02,
1851M52P01,
1851M52P02,
1851M53P01,
1851M53P02
1471M69P01,
1471M69P02,
1519M91P01
1519M91P02
1519M91P03,
1519M91P04
1519M91P05
1519M91P06,
1820M34P01
1519M91P07,
1820M34P02
1519M91P09,
1519M91P10,
1820M34P04,
1820M34P05
Previous Software Versions of ECU Software
(h) For a period of 24 months after the
effective date of this AD, once an ECU
containing a software version not listed in
Table 1 of this AD is installed on an engine,
that ECU can be replaced with an ECU
containing a previous version of software
listed in Table 1.
(i) Once the software version listed in
Table 1 of this AD has been removed and
new FAA-approved software version is
installed in an ECU, reverting to those older
software versions in that ECU is prohibited.
(j) After 60 months from the effective date
of this AD, use of an ECU with a software
version listed in Table 1 of this AD is
prohibited.
Definitions
(k) For the purposes of this AD:
(1) Next shop visit of the ECU is when the
ECU is removed from the engine for overhaul
or maintenance after the effective date of this
AD.
(2) Next shop visit of the engine is when
the engine is removed from the airplane for
maintenance in which a major flange is
disassembled after the effective date of this
AD. The following engine maintenance
actions, either separately or in combination
with each other, are not considered a next
shop visit of the engine:
(i) Removal of the upper high pressure
compressor (HPC) stator case solely for airfoil
maintenance.
(ii) Module-level inspection of the HPC
rotor stages 3–9 spool.
(iii) Replacement of stage 5 HPC variable
stator vane bushings or lever arms.
(iv) Removal of the accessory gearbox.
(v) Replacement of the inlet gearbox
polytetrafluoroethylene seal.
Alternative Methods of Compliance
(l) 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.
Special Flight Permits
(m) Special flight permits are not
authorized.
Related Information
(n) Information on removing ECU software
and installing new software, which provides
increased margin to flameout, can be found
in GE Service Bulletin No. CF6–80C2 S/B 73–
0351, dated April 11, 2007.
(o) Contact John Golinski, Aerospace
Engineer, Engine Certification Office, FAA,
Engine and Propeller Directorate, 12 New
England Executive Park, Burlington, MA
01803; e-mail: john.golinski@faa.gov;
telephone: (781) 238–7135, fax: (781) 238–
7199, for more information about this AD.
Issued in Burlington, Massachusetts, on
July 11, 2007.
Francis A. Favara,
Manager, Engine and Propeller Directorate,
Aircraft Certification Service.
[FR Doc. E7–13835 Filed 7–16–07; 8:45 am]
DEPARTMENT OF LABOR
Occupational Safety and Health
Administration
29 CFR Part 1910
[Docket No. OSHA–2007–0032 (Formerly
Docket No. OSHA–S031–2006–0665 and
OSHA Docket No. S–031)]
RIN 1218–AC09
Explosives
Occupational Safety and Health
Administration (OSHA), Department of
Labor.
AGENCY:
ACTION:
Proposed rule; close of comment
period.
SUMMARY: On April 13, 2007, the U.S.
Department of Labor published a
proposed rule entitled Explosives with
a comment period that ended
7/12/2007. On July 9, 2007, the
comment period was extended to
9/10/2007. At this time the U.S.
Department of Labor is closing the
comment period effective July 17, 2007.
The Department intends to re-propose
the Explosives NPRM at a later date in
order to clarify the intent of the
rulemaking.
The comment period for the
proposed rule published on April 13,
2007 (72 FR 18792) is closed effective
July 17, 2007.
DATES:
For
general information and press inquiries,
contact Mr. Kevin Ropp, Office of
Communications, Room N–3647, OSHA,
U.S. Department of Labor, 200
Constitution Avenue, NW., Washington,
DC 20210; telephone (202) 693–1999.
For technical inquiries, contact Donald
Pittenger, Directorate of Standards and
Guidance, Room N–3609, OSHA, U.S.
Department of Labor, 200 Constitution
Avenue, NW., Washington, DC 20210;
telephone (202) 693–2255 or fax (202)
693–1663.
FOR FURTHER INFORMATION CONTACT:
Signed at Washington, DC, on July 13,
2007.
Edwin G. Foulke, Jr.,
Assistant Secretary of Labor for Occupational
Safety and Health.
[FR Doc. E7–13925 Filed 7–16–07; 8:45 am]
BILLING CODE 4510–26–P
BILLING CODE 4910–13–P
VerDate Aug<31>2005
14:12 Jul 16, 2007
Jkt 211001
PO 00000
Frm 00024
Fmt 4702
Sfmt 4702
39041
E:\FR\FM\17JYP1.SGM
17JYP1
]]>Agencies
[Federal Register Volume 72, Number 136 (Tuesday, July 17, 2007)]
[Proposed Rules]
[Page 39041]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-13925]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF LABOR
Occupational Safety and Health Administration
29 CFR Part 1910
[Docket No. OSHA-2007-0032 (Formerly Docket No. OSHA-S031-2006-0665 and
OSHA Docket No. S-031)]
RIN 1218-AC09
Explosives
AGENCY: Occupational Safety and Health Administration (OSHA),
Department of Labor.
ACTION: Proposed rule; close of comment period.
-----------------------------------------------------------------------
SUMMARY: On April 13, 2007, the U.S. Department of Labor published a
proposed rule entitled Explosives with a comment period that ended 7/
12/2007. On July 9, 2007, the comment period was extended to 9/10/2007.
At this time the U.S. Department of Labor is closing the comment period
effective July 17, 2007. The Department intends to re-propose the
Explosives NPRM at a later date in order to clarify the intent of the
rulemaking.
DATES: The comment period for the proposed rule published on April 13,
2007 (72 FR 18792) is closed effective July 17, 2007.
FOR FURTHER INFORMATION CONTACT: For general information and press
inquiries, contact Mr. Kevin Ropp, Office of Communications, Room N-
3647, OSHA, U.S. Department of Labor, 200 Constitution Avenue, NW.,
Washington, DC 20210; telephone (202) 693-1999. For technical
inquiries, contact Donald Pittenger, Directorate of Standards and
Guidance, Room N-3609, OSHA, U.S. Department of Labor, 200 Constitution
Avenue, NW., Washington, DC 20210; telephone (202) 693-2255 or fax
(202) 693-1663.
Signed at Washington, DC, on July 13, 2007.
Edwin G. Foulke, Jr.,
Assistant Secretary of Labor for Occupational Safety and Health.
[FR Doc. E7-13925 Filed 7-16-07; 8:45 am]
BILLING CODE 4510-26-P
