Federal Register Proposed Rules, Rules and Notices for July 30,2013

July 30,2013

PROPOSED RULES

Airworthiness Directives; The Boeing Company Airplanes [FR DOC# 2013-18237]
SUMMARY: We are revising an earlier proposed airworthiness directive (AD)
for all The Boeing Company Model 777-200, -200LR, -300, and -300ER series
airplanes. That supplemental notice of proposed rulemaking (SNPRM) proposed
to require revising the maintenance program to incorporate a revision to the
Airworthiness Limitations Section of the maintenance planning data (MPD)
document. That SNPRM was prompted by reports of two in-service occurrences
on Model 737- 400 airplanes of total loss of boost pump pressure of the fuel
feed system, followed by loss of fuel system suction feed capability on one
engine, and in-flight shutdown of the engine. This action revises that SNPRM
by adding Model 777F series airplanes to the applicability. We are proposing
this AD to detect and correct failure of the engine fuel suction feed of the
fuel system, which, in the event of total loss of the fuel boost pumps,
could result in dual engine flameout, inability to restart the engines, and
consequent forced landing of the airplane. Since this action imposes an
additional burden over that proposed in the previous SNPRM, we are reopening
the comment period to allow the public the chance to comment on this
proposed change.
RULES

Airworthiness Directives; CFM International, S. A. Turbofan Engines [FR DOC#
2013-17296] SUMMARY: We are adopting a new airworthiness directive (AD) for
certain CFM International, S. A. (CFM) model CFM56-5 and CFM56-5B series
turbofan engines. This AD was prompted by corrosion of the delta-P valve in
the hydro-mechanical unit (HMU) fuel control caused by exposure to type TS-1
fuel. This AD requires cleaning, inspection, and repair of affected HMUs. We
are issuing this AD to prevent seizure of the HMU, leading to failure of one
or more engines and damage to the airplane.

Airworthiness Directives; Bell Helicopter Textron Helicopters [FR DOC# 2013
-18079] SUMMARY: We are superseding Airworthiness Directive (AD) 2008-10-03
for Bell Helicopter Textron Helicopters (Bell) Model 204B, 205A, 205A-1,
205B, 210, 212, 412, 412CF, and 412EP helicopters. AD 2008-10-03 required
certain checks and inspections of each tail rotor blade assembly (T/R blade)
at specified intervals and repairing or replacing, as applicable, any
cracked or damaged T/R blade. Since we issued AD 2008-10-03, an accident
attributed to a T/R failure occurred. This new AD retains the requirements
of AD 2008-10-03 and adds a second, more detailed inspection that allows for
an earlier detection of a crack or other damage in a T/R blade. These
actions are intended to prevent a failure of the T/R blade and subsequent
loss of helicopter control.

Amendment of Class E Airspace; Salt Lake City, UT [FR DOC# 2013-18141]
SUMMARY: This action modifies Class E airspace at Salt Lake City, UT, to
accommodate aircraft using Area Navigation (RNAV) Global Positioning System
(GPS) and Instrument Landing System (ILS) or Localizer (LOC) standard
instrument approach procedures at Salt Lake City International Airport. This
improves the safety and management of Instrument Flight Rules (IFR)
operations at the airport. This action also adjusts the geographic
coordinates of the airport, and makes a minor change to the legal
description of Class E airspace extending upward from 1,200 feet above the
surface, at Salt Lake City, UT.

Amendment of Class E Airspace; Gustavus, AK [FR DOC# 2013-18136] SUMMARY:
This action amends Class E airspace at Gustavus Airport, Gustavus, AK.
Decommissioning of the Gustavus Nondirectional Radio Beacon (NDB) has made
this action necessary for the safety and management of Instrument Flight
Rules (IFR) operations at the airport. This action also adjusts the
geographic coordinates of the airport.

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